Patent ID: 8774297
Filing Date: 2014-07-08
Classification: H04B,H04J,H04L

Abstract:
1. A method for transmitting Acknowledgement/Negative acknowledgement (ACK/NACK) information in a mobile communication system, the method performed by a base station and comprising: transmitting a first signal including first spread ACK/NACK information in an orthogonal frequency division multiplexing (OFDM) symbol, the first spread ACK/NACK information existing only in a first antenna set in a form as shown in an upper half of Table 1; and transmitting a second signal including second spread ACK/NACK information in an OFDM symbol, the second spread ACK/NACK information existing only in a second antenna set in a form as shown in a lower half of Table 1: wherein a wherein the first spread ACK/NACK information and the second spread ACK/NACK information carry identical ACK/NACK information, and wherein the four available neighboring subcarriers for the first spread ACK/NACK information are separated from the four available neighboring subcarriers for the second spread ACK/NACK information by a plurality of subcarriers in a frequency domain.