Patent ID: 9320026
Filing Date: 2016-04-19
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A method for transmitting acknowledgement/negative acknowledgement (ACK/NACK) information by a user equipment in a wireless communication system, the method comprising: receiving, by the user equipment, a physical downlink control channel (PDCCH); receiving, by the user equipment, physical uplink control channel (PUCCH) resource information for ACK/NACK repetition; performing an initial transmission of the ACK/NACK information through a first antenna port and a second antenna port; and performing a repetition transmission of the ACK/NACK information through the first antenna port and the second antenna port based on the PUCCH resource information, wherein the initial transmission of the ACK/NACK information is performed through the first antenna port using a first PUCCH resource n(1)PUCCH,1 and through the second antenna port using a second PUCCH resource n(1)PUCCH,2, where n(1)PUCCH,1=nCCE+N(1)PUCCH and n(1)PUCCH,2=nCCE+1+N(1)PUCCH, where nCCE is a lowest control channel element (CCE) index from among CCE indexes of the PDCCH, and N(1)PUCCH is configured by a higher layer, and wherein the repetition transmission of the ACK/NACK information is performed through the first antenna port using a third PUCCH resource n(1)PUCCH,3 and through the second antenna port using a fourth PUCCH resource n(1)PUCCH,4, where n(1)PUCCH,3 and n(1)PUCCH,4 are configured for the first antenna port and the second antenna port, respectively, by the PUCCH resource information.