Apparatus and method of transmitting reception acknowledgement in wireless communication system

摘要

A method and apparatus for transmitting reception acknowledgment for hybrid automatic repeat request (HARQ) in a wireless communication system are provided. A user equipment receives a plurality of downlink resource allocations on a plurality of downlink control channels by using a plurality of downlink carriers, and receives a plurality of downlink transfer blocks on a plurality of downlink shared channels indicated by the plurality of downlink resource allocations. The user equipment determines a plurality of acknowledgment (ACK)/negative acknowledgment (NACK) resource indices based on a plurality of resource indices obtained from downlink resources which use the plurality of downlink control channels. The user equipment transmits ACK/NACK for the plurality of downlink transfer blocks by using ACK/NACK resources indicated by the plurality of ACK/NACK resource indices.

主权项

1. A method of transmitting acknowledgment (ACK)/negative acknowledgment (NACK) for hybrid automatic repeat request (HARQ) in a wireless communication system, the method comprising:
receiving, by a user equipment (UE), a plurality of downlink resource allocations on a plurality of physical downlink control channels (PDCCHs) of a plurality of downlink carriers; receiving, by the UE, a plurality of downlink transfer blocks on a plurality of physical downlink shared channels (PDSCHs) indicated by the plurality of downlink resource allocations via the plurality of downlink carriers; determining, by the UE, resources of a physical uplink control channel (PUCCH) for transmitting ACK/NACK, based on higher layer signaled values and at least one of indices of a plurality of control channel elements (CCEs) in which the plurality of PDCCHs are used, wherein the higher layer signaled values are defined as downlink carriers specifically different from each other; and transmitting, by the UE, a plurality of ACKs/NACKs for the plurality of downlink transfer blocks on the determined resources of the PUCCH, wherein the determining of the resources of the PUCCH by the UE includes determining indices of the resources of the PUCCH, and wherein a same index for the resources of the PUCCH is determined from at least two of the indices of the plurality of CCEs.