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EP-4738744-A2 - HARQ-ACK CODEBOOK CONSTRUCTION

EP4738744A2EP 4738744 A2EP4738744 A2EP 4738744A2EP-4738744-A2

Abstract

Apparatuses, methods, and systems are disclosed for HARQ-ACK codebook construction. One method (500) includes constructing (502) a first HARQ-ACK codebook based on first HARQ-ACK information. The first HARQ-ACK codebook is scheduled to be transmitted on a first uplink transmission occasion. The method (500) includes determining (504) at least part of the first HARQ-ACK information to be transmitted together with second HARQ-ACK information in response to the first uplink transmission occasion not being available for transmission. The second HARQ-ACK information is scheduled to be transmitted later than the first uplink transmission occasion. The method (500) includes transmitting (506) a second HARQ-ACK codebook on a second uplink transmission occasion. The second HARQ-ACK codebook is based on at least the part of the first HARQ-ACK information and the second HARQ-ACK information, and the first uplink transmission occasion starts earlier than the second uplink transmission occasion.

Inventors

  • JUNG, HYEJUNG
  • BAGHERI, HOSSEIN
  • NANGIA, VIJAY

Assignees

  • Lenovo (Singapore) Pte. Ltd.

Dates

Publication Date
20260506
Application Date
20211123

Claims (15)

  1. A method (500) performed by a user equipment, UE, the method comprising: constructing (502) a first hybrid automatic repeat request acknowledgement, HARQ-ACK, codebook based on first HARQ-ACK information, wherein the first HARQ-ACK codebook is scheduled to be transmitted on a first uplink transmission occasion; determining (504) at least part of the first HARQ-ACK information to be transmitted together with second HARQ-ACK information in response to the first uplink transmission occasion not being available for transmission, wherein the second HARQ-ACK information is scheduled to be transmitted later than the first uplink transmission occasion; transmitting (506) a second HARQ-ACK codebook on a second uplink transmission occasion, wherein the second HARQ-ACK codebook is based on at least the part of the first HARQ-ACK information and the second HARQ-ACK information, and the first uplink transmission occasion starts earlier than the second uplink transmission occasion; and detecting a downlink control information, DCI, format requesting a transmission of the first HARQ-ACK codebook on the second uplink transmission occasion, wherein transmitting the second HARQ-ACK codebook comprises transmitting the second HARQ-ACK codebook in response to detecting the DCI format, wherein: the first HARQ-ACK information comprises high-priority HARQ-ACK information and low-priority HARQ-ACK information; at least the part of the first HARQ-ACK information to be transmitted together with the second HARQ-ACK information is determined based on the detected DCI format; and the second HARQ-ACK codebook comprises the high-priority HARQ-ACK information and the second HARQ-ACK information.
  2. The method (500) of claim 1, further comprising constructing the second HARQ-ACK codebook by appending the first HARQ-ACK codebook to a third HARQ-ACK codebook, wherein the third HARQ-ACK codebook is based on the second HARQ-ACK information.
  3. The method (500) of claim 1, wherein the first uplink transmission occasion is semi-statically configured.
  4. The method (500) of claim 1, further comprising detecting a DCI format requesting a transmission of a part of HARQ-ACK information that the UE maintains on a third uplink transmission occasion, wherein the DCI format includes an indication of the part of the HARQ-ACK information.
  5. The method (500) of claim 4, wherein the part of the HARQ-ACK information corresponds to HARQ-ACK information of a subset of serving cells.
  6. A user equipment, UE (200), comprising a processor (202) configured to: construct a first hybrid automatic repeat request acknowledgement, HARQ-ACK, codebook based on first HARQ-ACK information, wherein the first HARQ-ACK codebook is scheduled to be transmitted on a first uplink transmission occasion; determine at least part of the first HARQ-ACK information to be transmitted together with second HARQ-ACK information in response to the first uplink transmission occasion not being available for transmission, wherein the second HARQ-ACK information is scheduled to be transmitted later than the first uplink transmission occasion; transmit a second HARQ-ACK codebook on a second uplink transmission occasion, wherein the second HARQ-ACK codebook is based on at least the part of the first HARQ-ACK information and the second HARQ-ACK information, and the first uplink transmission occasion starts earlier than the second uplink transmission occasion; and detect a downlink control information, DCI, format requesting a transmission of the first HARQ-ACK codebook on the second uplink transmission occasion, wherein transmitting the second HARQ-ACK codebook comprises transmitting the second HARQ-ACK codebook in response to detecting the DCI format, and wherein: the first HARQ-ACK information comprises high-priority HARQ-ACK information and low-priority HARQ-ACK information; at least the part of the first HARQ-ACK information to be transmitted together with the second HARQ-ACK information is determined based on the detected DCI format; and the second HARQ-ACK codebook comprises the high-priority HARQ-ACK information and the second HARQ-ACK information.
  7. The UE (200) of claim 6, wherein the processor is further configured to construct the second HARQ-ACK codebook by appending the HARQ-ACK codebook to a third HARQ-ACK codebook, wherein the third HARQ-ACK codebook is based on the second HARQ-ACK information.
  8. The UE (200) of claim 6, wherein the first uplink transmission occasion is semi-statically configured.
  9. The UE (200) of claim 6, wherein the processor is further configured to detect a DCI format requesting a transmission of a part of HARQ-ACK information that the user equipment maintains on a third uplink transmission occasion, wherein the DCI format includes an indication of the part of the HARQ-ACK information.
  10. The UE (200) of claim 9, wherein the part of the HARQ-ACK information corresponds to HARQ-ACK information of a subset of serving cells.
  11. A processor (202) for a user equipment, UE (200), configured to: construct a first hybrid automatic repeat request acknowledgement, HARQ-ACK, codebook based on first HARQ-ACK information, wherein the first HARQ-ACK codebook is scheduled to be transmitted on a first uplink transmission occasion; determine at least part of the first HARQ-ACK information to be transmitted together with second HARQ-ACK information in response to the first uplink transmission occasion not being available for transmission, wherein the second HARQ-ACK information is scheduled to be transmitted later than the first uplink transmission occasion; transmit a second HARQ-ACK codebook on a second uplink transmission occasion, wherein the second HARQ-ACK codebook is based on at least the part of the first HARQ-ACK information and the second HARQ-ACK information, and the first uplink transmission occasion starts earlier than the second uplink transmission occasion; and detect a downlink control information, DCI, format requesting a transmission of the first HARQ-ACK codebook on the second uplink transmission occasion, wherein transmitting the second HARQ-ACK codebook comprises transmitting the second HARQ-ACK codebook in response to detecting the DCI format, wherein: the first HARQ-ACK information comprises high-priority HARQ-ACK information and low-priority HARQ-ACK information; at least the part of the first HARQ-ACK information to be transmitted together with the second HARQ-ACK information is determined based on the detected DCI format; and the second HARQ-ACK codebook comprises the high-priority HARQ-ACK information and the second HARQ-ACK information.
  12. The processor (202) of claim 11, wherein the processor is further configured to construct the second HARQ-ACK codebook by appending the first HARQ-ACK codebook to a third HARQ-ACK codebook, wherein the third HARQ-ACK codebook is based on the second HARQ-ACK information.
  13. The processor (202) of claim 11, wherein the first uplink transmission occasion is semi-statically configured.
  14. The processor (202) of claim 11, wherein the processor is further configured to detect a DCI format requesting a transmission of a part of HARQ-ACK information that the user equipment maintains on a third uplink transmission occasion, wherein the DCI format includes an indication of the part of the HARQ-ACK information.
  15. The processor (202) of claim 14, wherein the part of the HARQ-ACK information corresponds to HARQ-ACK information of a subset of serving cells.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to United States Patent Application Serial Number 63/118,550 entitled "APPARATUSES, METHODS, AND SYSTEMS FOR HARQ-ACK CODEBOOK FOR DELAYED HARQ-ACK FEEDBACK" and filed on November 25, 2020 for Hyejung Jung, which is incorporated herein by reference in its entirety. FIELD The subject matter disclosed herein relates generally to wireless communications and more particularly relates to HARQ-ACK codebook construction. BACKGROUND In certain wireless communications networks, HARQ-ACK may be used. In such networks, there may be at least one delayed HARQ-ACK codebook. BRIEF SUMMARY Methods for HARQ-ACK codebook construction are disclosed. Apparatuses and systems also perform the functions of the methods. One embodiment of a method includes constructing, at a user equipment, a first hybrid automatic repeat request acknowledgement codebook based on first hybrid automatic repeat request acknowledgement information. The first hybrid automatic repeat request acknowledgement codebook is scheduled to be transmitted on a first uplink transmission occasion. In some embodiments, the method includes determining at least part of the first hybrid automatic repeat request acknowledgement information to be transmitted together with second hybrid automatic repeat request acknowledgement information in response to the first uplink transmission occasion not being available for transmission. The second hybrid automatic repeat request acknowledgement information is scheduled to be transmitted later than the first uplink transmission occasion. In certain embodiments, the method includes transmitting a second hybrid automatic repeat request acknowledgement codebook on a second uplink transmission occasion. The second hybrid automatic repeat request acknowledgement codebook is based on at least the part of the first hybrid automatic repeat request acknowledgement information and the second hybrid automatic repeat request acknowledgement information, and the first uplink transmission occasion starts earlier than the second uplink transmission occasion. One apparatus for HARQ-ACK codebook construction includes a user equipment. In some embodiments, the apparatus includes a processor that: constructs a first hybrid automatic repeat request acknowledgement codebook based on first hybrid automatic repeat request acknowledgement information, wherein the first hybrid automatic repeat request acknowledgement codebook is scheduled to be transmitted on a first uplink transmission occasion; and determines at least part of the first hybrid automatic repeat request acknowledgement information to be transmitted together with second hybrid automatic repeat request acknowledgement information in response to the first uplink transmission occasion not being available for transmission. The second hybrid automatic repeat request acknowledgement information is scheduled to be transmitted later than the first uplink transmission occasion. In various embodiments, the apparatus includes a transmitter that transmits a second hybrid automatic repeat request acknowledgement codebook on a second uplink transmission occasion. The second hybrid automatic repeat request acknowledgement codebook is based on at least the part of the first hybrid automatic repeat request acknowledgement information and the second hybrid automatic repeat request acknowledgement information, and the first uplink transmission occasion starts earlier than the second uplink transmission occasion. Another embodiment of a method for HARQ-ACK codebook construction includes transmitting, from a network device, scheduling information for a first hybrid automatic repeat request acknowledgement codebook to a user equipment. The first hybrid automatic repeat request acknowledgement codebook is based on first hybrid automatic repeat request acknowledgement information and is scheduled on a first uplink transmission occasion. In certain embodiments, the method includes receiving a second hybrid automatic repeat request acknowledgement codebook on a second uplink transmission occasion. The second hybrid automatic repeat request acknowledgement codebook is based on at least a part of the first hybrid automatic repeat request acknowledgement information and second hybrid automatic repeat request acknowledgement information, the first uplink transmission occasion starts earlier than the second uplink transmission occasion, at least the part of the first hybrid automatic repeat request acknowledgement information is determined to be received together with the second hybrid automatic repeat request acknowledgement information in response to the first uplink transmission occasion not being available for transmission by the user equipment, and the second hybrid automatic repeat request acknowledgement information is scheduled to be received later than the first uplink transmission occasion. Another apparatus for HARQ-ACK codebook construc