TRANSMISSION METHOD FOR CONTROL INFORMATION, USER EQUIPMENT AND BASE STATION

摘要

The present invention relates to a control information transmission method, user equipment, and a base station, where the control information transmission method includes: determining, by user equipment, to acquire a downlink control information DCI format of a downlink control channel corresponding to a first serving cell, where the first serving cell is a serving cell corresponding to the user equipment, and the DCI format is determined by using a duplex mode of the first serving cell and a feedback manner of a hybrid automatic repeat request-acknowledgment HARQ-ACK corresponding to the first serving cell; and detecting, by the user equipment, the downlink control channel according to the determined DCI format. When different carrier aggregation manners are used, a DCI format corresponding to a control channel may be determined according to a duplex mode and an HARQ-ACK feedback manner, and therefore the present invention can be flexibly applied to various scenarios.