Method and apparatus for feeding back aggregated channel state information in cooperative multipoint communication system
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United States of America Patent
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May 29, 2018
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app pub date -
Oct 29, 2012
filing date -
Oct 27, 2011
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Abstract
The present invention relates to a wireless communication system and, in particular, to a method and apparatus for feeding back aggregated CSI using multiple CSI-RS setting information in a wireless communication system which supports CoMP. The method of a terminal feeding back aggregated CSI for cooperative transmission in the wireless communication system according to an embodiment of the present invention, includes the steps of respectively receiving first CSI-RS setting information and second CSI setting information for a first base station and a second base station participating in the cooperative transmission; receiving a first CSI-RS and a second CSI-RS setting information; calculating first CSI and second CSI using the first CSI-RS and the second CSI-RS; and transmitting the aggregated CSI calculated on the basis of the first CSI and the second CSI, wherein the first CSI-RS and the second CSI-RS can be transmitted on the same subframe.
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