Method for transmitting control information in multiple antenna system

摘要

A method of transmitting control information includes dividing frequency bandwidth into ranges to which the same PMI (precoding matrix index) is applied, obtaining multiple antenna information by the range to which the same PMI is applied and transmitting the multiple antenna information. Since multiple antenna information is transmitted by the unit of a range to which the same PMI is applied, radio resources allocated for transmitting the multiple antenna information may be reduced, thereby enhancing data transmission efficiency.

主权项

1. A method for multiple input multiple output (MIMO) transmission in a wireless communication system, the method performed by a transmitter and comprising:
encoding a first control signal by using a convolutional coding to generate an encoded first control signal, the first control signal including common control information that is common to all receivers; encoding at least one second control signal by using the convolutional coding to generate at least one encoded second control signal, the at least one second control signal including user-specific MIMO information; transmitting the encoded first control signal to at least one receiver; transmitting the at least one encoded second control signal to the at least one receiver via at least one spatial stream; and transmitting at least one data packet to the at least one receiver, wherein the common control information includes MIMO information indicating whether the at least one encoded second control signal is to be transmitted by a single-user MIMO scheme or by using a multi-user MIMO scheme, wherein the user-specific MIMO information includes information that is used to decode the at least one data packet by the at least one receiver, and wherein the at least one encoded second control signal is transmitted by applying a precoding that is specific to a corresponding receiver but the encoded first control signal is transmitted without applying any precoding.