CHANNEL INFORMATION FEEDBACK METHOD AND DEVICE
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United States of America Patent
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Oct 17, 2017
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Apr 17, 2015
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In an embodiment, a Node B configures a first Channel State Information-Reference Signal (CSI-RS) and ports configured to send the first CSI-RS; and the Node B sends the first CSI-RS to User Equipment (UE) at the configured ports. Therefore, downlink channel information feedback in Three-Dimensional Multiple-Input Multiple-Output (3D-MIMO) may be supported.
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