Apparatus and method for downlink scheduling in a multi antenna wireless communication system

摘要

An apparatus and method for downlink scheduling in a multi antenna wireless communication system are provided. The apparatus includes a receiver for receiving channel information of at least one mobile station that is selected as an active user by a base station, a judgment unit for judging whether it feeds back its own channel information using the channel information of the selected at least one mobile station, and a transmitter for transmitting the its own channel information to the base station according to judgment of the judgment unit.

主权项

1. An apparatus of a mobile station in a wireless communication system, the apparatus comprising:
a receiver configured to receive, from a base station to the mobile station, channel information for of at least one other mobile station; a controller configured to determine whether to transmit channel information for the mobile station responsive to comparison of an effective channel value, determined based on a channel matrix of the mobile station and the channel information for the at least one other mobile station, to a threshold; and a transmitter configured to transmit the channel information, from the mobile station to the base station, for the mobile station if the effective channel value is greater than the threshold, wherein the channel information for the at least one other mobile station is selected by the base station as an active user, and wherein the effective channel value comprises a multiplication of a first matrix including the channel matrix of the mobile station and a second matrix including a matrix that is orthogonal with another channel matrix of the at least one other mobile station.