Patent ID: 8792570
Filing Date: 2014-07-29
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: generating first spread ACK/NACK information using an orthogonal sequence with a spreading factor of 4; generating second spread ACK/NACK information using the orthogonal sequence; coding the first spread ACK/NACK information as shown in Table 1; and coding the second spread ACK/NACK information as shown in Table 2: wherein a wherein the “*” symbol represents a conjugate operation, wherein the first spread ACK/NACK information and the second spread ACK/NACK information carry identical ACK/NACK information, and wherein the first set of four available neighboring subcarriers are separated from the second set of four available neighboring subcarriers by a plurality of subcarriers in a frequency domain.