ACK/NACK transmission method in wireless access system and apparatus therefor

摘要

An ACK/NACK (acknowledgement/negative-ACK) transmission method in a wireless access system that supports device-to-device communication and an apparatus therefor are disclosed. Specifically, a method for transmitting ACK/NACK in a wireless access system that supports the device-to-device communication comprises the steps of: receiving first data in a first sub-frame, receiving second data from a base station in a second subframe, and when data transmission and reception through the device-to-device communication carried out in a third sub-frame for transmitting the ACK/NACK information on the first data, transmitting, to the base station in a fourth sub-frame, a grouped ACK/NACK information including the ACK/NACK information on the first data and the ACK/NACK information on the second data.

主权项

1. A method for transmitting an ACK/NACK (acknowledgement/negative-ACK) signal by a first user equipment (UE) to a base station (BS) in a wireless communication system supporting a direct communication between the first UE and another UE, the method comprising:
receiving, by the first UE from the BS, first data, wherein ACK/NACK information for the first data is configured to be transmitted in a first subframe; receiving, by the first UE from the BS, second data, wherein ACK/NACK information for the second data is configured to be transmitted in a second subframe different from the first subframe; when the direct communication between the first UE and the another UE is configured in the first subframe, transmitting, by the first UE to the BS, group ACK/NACK information for the first data and the second data in the second subframe; and when the direct communication between the first UE and the another UE is not configured in the first subframe, transmitting, by the first UE to the BS, the ACK/NACK information for the first data in the first subframe.