FIELD: radio engineering, communication.
SUBSTANCE: invention relates to an apparatus and a method for feeding back data receiving status, applied to a long term evolution-advanced (LTE-A) system. The method includes sequencing, by user equipment (UE), downlink subframes for transmitting data with respect to each component carrier (CC), generating receiving status feedback information for the first X downlink subframes with respect to each CC according to the sequencing result, where X≤M, wherein M is the number of downlink subframes on each CC, and transmitting the receiving status feedback information generated with respect to each CC to a base station. Accordingly, the UE will not misinterpret the receiving status for the downlink subframes due to inconsistencies with the base station between transmitting and receiving feedback.
EFFECT: reducing the amount of uplink overhead, occupied through receiving status feedback information, and a wider uplink coverage area.
20 cl, 14 dwg
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