Patent ID: 8537788
Filing Date: 2013-09-17
Classification: H04L

Abstract:
1. A method of receiving, by a user equipment, ACK/NACK (acknowledgement/negative ACK) information from a base station in a wireless communication system, comprising: transmitting, by the user equipment, two codewords via a prescribed frequency resource; and receiving, by the user equipment, the ACK/NACK information for the two codewords via a PHICH (physical hybrid ARQ channel), wherein the received ACK/NACK information indicates that both of the two codewords are ACK when the received ACK/NACK information is corresponding to null information, wherein the received ACK/NACK information indicates at least that both of the two codewords are NACK or that one of the two codewords is NACK, when the received ACK/NACK information is an HI (HARQ indicator) codeword.