METHOD AND DEVICE FOR ACK/NACK TRANSMISSION IN TDD-BASED WIRELESS COMMUNICATION SYSTEM

摘要

Provided are a method and a device for ACK/NACK transmission in a TDD(Time Division Duplex)-based wireless communication system. The terminal receives a SPS downlink transmission block on a PDSCH (physical downlink shared channel) without a PDCCH (physical downlink control channel), and receives a downlink transmission block on the PDSCH that is indicated by the PDCCH having a DAI (downlink assignment index). The terminal transmits on to an uplink control channel a 2-bit ACK/NACK regarding the SPS downlink transmission block and the downlink transmission block.