FIELD: wireless communication.
SUBSTANCE: group of inventions relates to wireless communication. In the feedback information transmission method, a first downlink control information (DCI) is received, the first DCI is used to indicate or activate a downlink transmission resource; receiving downlink data on the downlink transmission resource; receiving a second DCI, the second DCI being used to indicate an uplink transmission resource and the uplink transmission resource being used to transmit feedback information for the downlink data; and sending feedback information on the uplink transmission resource.
EFFECT: reducing the power consumption of the terminal device during the channel access procedure.
30 cl, 10 dwg
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