Apparatus and method for sending and receiving channel state information in communication system

摘要

The present invention relates to a channel status information transmission/reception method and apparatus in a wireless communication system in which the transmission apparatus generates channel status informations for at least two transmission schemes by combining rank informations corresponding to the transmission schemes into combined rank information through analyzing an uplink channel, and transmits the channel status informations for the respective transmission schemes on uplink channel, the channel status information for one of the transmission schemes containing the combined rank information; the reception apparatus receives the channel status informations corresponding to at least two transmission schemes, the channel status information for one of the transmission schemes including combined rank information for the transmission schemes, schedules downlink channel according to the channel status information, and transmits signals on the downlink channel. According to the present invention, the transmission apparatus combines rank informations of a plurality of transmission schemes and feeds back the combined rank information so as to reduce overhead at a reception apparatus.

主权项

1. A method for transmitting channel status information of a terminal in a wireless communication system, the method comprising:
identifying rank information for a first transmission scheme; transmitting, to a base station, the identified rank information for the first transmission scheme; identifying rank information for a second transmission scheme based on the rank information for the first transmission scheme; generating channel status information for the second transmission scheme based on the identified rank information for the second transmission scheme; and transmitting, to the base station, the generated channel status information for the second transmission scheme, wherein identifying rank information for the second transmission scheme comprises: identifying, if a highest value of supportable rank for the first transmission scheme is greater than a highest value of supportable rank for the second transmission scheme, the rank information for the second transmission scheme based on the rank information for the first transmission scheme.