FIELD: wireless communication.
SUBSTANCE: invention relates to wireless communication. The contention window determination method includes: obtaining hybrid automatic repeat request (HARQ) feedback information based on a transmission unit (TB) within a predetermined time period, wherein the TB-based HARQ feedback information contains a no acknowledgment identifier. (NACK) and acknowledgment identifier (ACK); determining the relative number of NACKs in the TV-based HARQ feedback information based on a coefficient used to provide the proportion of TV-based HARQ and Code Block Group (CBG)-based HARQ, and determining the random access contention window (CWS) size in unlicensed frequency band based on said relative amount.
EFFECT: ensuring that the most appropriate CWS for the current transmission scenario can be obtained.
14 cl, 15 dwg
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