| CPC H04L 1/1861 (2013.01) [H04L 1/1854 (2013.01); H04L 1/1887 (2013.01); H04L 1/1893 (2013.01); H04W 72/1263 (2013.01); H04W 72/20 (2023.01)] | 20 Claims |

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1. A first node for wireless communications, comprising:
a first receiver, receiving a first signaling; and receiving a first signal in a first time window; and
a first transmitter, transmitting a first bit block in a first radio resource block;
wherein the first signaling is used for indicating configuration information for the first signal; the first time window is one of M time windows, and any two time windows of the M time windows are orthogonal, M being a positive integer greater than 1; the first radio resource block belongs to a target time window in time domain, and any of the M time windows is associated with the target time window; the first bit block comprises a first bit sub-block, the first bit sub-block being used to indicate whether the first signal is correctly received; a position of the first time window in the M time windows is used to determine a size of the first bit block; the first bit block comprises a positive integer number of bit(s), and the first bit sub-block comprises a positive integer number of bit(s).
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