CPC H04L 1/1854 (2013.01) [H04L 1/1621 (2013.01); H04L 1/1671 (2013.01); H04L 1/1812 (2013.01)] | 20 Claims |
1. A method for wireless communications by a user equipment, the method comprising:
receiving a first group of downlink transmissions;
transmitting a first hybrid automatic repeat request acknowledgement codebook for the first group of downlink transmissions in response to channel access procedure for transmitting the first hybrid automatic repeat request acknowledgement codebook being successful;
receiving a second group of downlink transmissions;
determining whether to retransmit hybrid automatic repeat request acknowledgement feedback for the first group of downlink transmissions;
transmitting a combined hybrid automatic repeat request acknowledgement codebook in response to determining to retransmit the hybrid automatic repeat request acknowledgement feedback for the first group of downlink transmissions and channel access procedure for transmitting the combined hybrid automatic repeat request acknowledgement codebook being successful, wherein the combined hybrid automatic repeat request acknowledgement codebook includes a first sub-codebook corresponding to the first group of downlink transmissions and a second sub-codebook corresponding to the second group of downlink transmissions; and
transmitting a second hybrid automatic repeat request acknowledgement codebook for the second group of downlink transmissions in response to determining not to retransmit the hybrid automatic repeat request acknowledgement feedback for the first group of downlink transmissions and channel access procedure for transmitting the second hybrid automatic repeat request acknowledgement codebook being successful.
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