Method and apparatus for HARQ-ACK payload reduction for semi-static HARQ-ACK codebook determination

A method comprising:

• receiving a first number of downlink transmissions indicating a first slot for transmitting corresponding hybrid automatic repeat request-acknowledgement feedback and a second number of downlink transmissions indicating a second slot for transmitting corresponding hybrid automatic repeat request-acknowledgement feedback;
• determining a first downlink slot set for the hybrid automatic repeat request-acknowledgement feedback transmitted in the first slot and a second downlink slot set for the hybrid automatic repeat request-acknowledgement feedback transmitted in the second slot;
• determining the first downlink slot set and the second downlink slot set have at least one overlapped slot;
• transmitting a first hybrid automatic repeat request-acknowledgement codebook in the first slot for the first downlink slot set and a second hybrid automatic repeat request-acknowledgement codebook in the second slot for the second downlink slot set, wherein hybrid automatic repeat request-acknowledgement feedback for each of the at least one overlapped slot is included in either the first hybrid automatic repeat request-acknowledgement codebook or the second hybrid automatic repeat request-acknowledgement codebook.

A method comprising:

• transmitting a first number of downlink transmissions indicating a first slot for transmitting corresponding hybrid automatic repeat request-acknowledgement feedback and transmits a second number of downlink transmissions indicating a second slot for transmitting corresponding hybrid automatic repeat request-acknowledgement feedback;
• determines a first downlink slot set for the hybrid automatic repeat request-acknowledgement feedback transmitted in the first slot and a second downlink slot set for the hybrid automatic repeat request-acknowledgement feedback transmitted in the second slot;
• determining the first downlink slot set and the second downlink slot set have at least one overlapped slot;
• receiving a first hybrid automatic repeat request-acknowledgement codebook in the first slot for the first downlink slot set and a second hybrid automatic repeat request-acknowledgement codebook in the second slot for the second downlink slot set, wherein hybrid automatic repeat request-acknowledgement feedback for each of the at least one overlapped slot is included in either the first hybrid automatic repeat request-acknowledgement codebook or the second hybrid automatic repeat request-acknowledgement codebook.