Patent ID: 8582626
Filing Date: 2013-11-12
Classification: H04B,H04J,H04L

Abstract:
1. A method for receiving Acknowledgement/Negative acknowledgement (ACK/NACK) information in a mobile communication system, the method comprising: receiving a first signal including first spread ACK/NACK information and second spread ACK/NACK information from a first antenna set of a transmitting end in an orthogonal frequency division multiplexing (OFDM) symbol; receiving a second signal including third spread ACK/NACK information and fourth spread ACK/NACK information from a second antenna set of the transmitting end in an OFDM symbol; and de-spreading at least the first and third spread ACK/NACK information or the second and fourth spread ACK/NACK information for identifying the ACK/NACK information, wherein the first spread ACK/NACK information, the second spread ACK/NACK information, the third spread ACK/NACK information, and the fourth spread ACK/NACK information exist in a form as shown in Table 1: wherein a wherein the first spread ACK/NACK information is generated by spreading of first ACK/NACK information using a first orthogonal sequence with a spreading factor of 2, wherein the second spread ACK/NACK information is generated by spreading of second ACK/NACK information using a second orthogonal sequence with a spreading factor of 2, wherein the third spread ACK/NACK information is generated by spreading of the first ACK/NACK information using the first orthogonal sequence, wherein the fourth spread ACK/NACK information is generated by spreading of the second ACK/NACK information using the second orthogonal sequence, and wherein the four available neighboring subcarriers for the first and second spread ACK/NACK information are not contiguous with the four available neighboring subcarriers for the third and fourth spread ACK/NACK information in a frequency domain.