CPC H04L 1/1861 (2013.01) [H04L 1/1893 (2013.01); H04L 1/1896 (2013.01)] | 28 Claims |
1. A method by a user equipment (UE) for a dynamic-HARQ (Hybrid Automatic Repeat Request) feedback in a wireless communication system supporting a carrier aggregation (CA), the method comprising: receiving, from a base station, first downlink control information (DCI) including a first downlink assignment indicator (DAI), wherein a field associated with the first DAI in the first DCI has a predetermined size; receiving, from the base station, downlink data based on the first DCI on a first serving cell; receiving, from the base station, second DCI including a second DAI, wherein a field associated with the second DAI in the second DCI has the predetermined size; receiving, from the base station, downlink data based on the second DCI on a second serving cell; receiving, from the base station, downlink data based on a semi-persistent scheduling (SPS); generating first HARQ-ACK (Hybrid Automatic Repeat Request-Acknowledgement) bit information including first HARQ-ACK information for the downlink data received based on the first DCI and second HARQ- ACK information for the downlink data received based on the second DCI, based on the first DAI and the second DAI; generating second HARQ-ACK bit information including third HARQ-ACK information for the downlink data based on the SPS; and transmitting, to the base station, third HARQ-ACK bit information on a physical uplink control channel (PUCCH), the third HARQ-ACK bit information including the first HARQ-ACK bit information and the second HARQ-ACK bit information located at the end of the third HARQ-ACK bit information, wherein a value of the first DAI is associated with a number of at least one pair of serving cell and an occasion in which downlink data reception is present, and is indexed in ascending order of serving cell index, and then in ascending order of occasion index, and wherein a value of the second DAI is associated with a number of at least one pair of serving cell and an occasion in which downlink data reception is present, and is indexed in ascending order of serving cell index, and then in ascending order of occasion index.
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