METHOD OF IMPLEMENTING AUTOMATICALLY RETRANSMISSION FEEDBACK IN A UE IN A CARRIER AGGREGATION NETWORK

The invention proposes a method of implementing hybrid automatically retransmission feedback in a UE in a carrier aggregation network, wherein, the network comprises a self-scheduling primary cell and a secondary cell, and the method comprises: determining a reference frame configuration based on the frame configuration of the primary cell and the frame configuration of the secondary cell, wherein, the reference frame configuration is the type 5; determining a first quantity of downlink subframes of the secondary cell needing to be fed back in uplink subframes, according to the frame configuration of the secondary cell and downlink subframes, associated with uplink subframes, corresponding to the reference frame configuration; receiving from a base station a parameter about the number of downlink subframes fed back, and calculating a second quantity of downlink subframes needing to be fed back in the uplink subframes, based on the parameter; determining an actual quantity of downlink subframes actually fed back, based on the first quantity and the second quantity; implementing automatically retransmission feedback for downlink frames of the actual quantity in the physical shared channel, adjusted by uplink grants, in the uplink subframes.