FIELD: communication.
SUBSTANCE: method (200) for feedback information transmission includes: reception (S210) by a terminal device of launch signaling, which is used for launch of feedback information transmission for at least one group of downlink channels by the terminal device; and determination (S220) by the terminal device of a codebook of feedback information based on launch signaling, while the codebook of feedback information includes feedback information for at least one group of downlink channels.
EFFECT: effective reduction in excessive information in feedback information.
8 cl, 12 dwg
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