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METHOD AND DEVICE FOR REPORTING CHANNEL STATE

  • US 20130343216A1
  • Filed: 11/30/2011
  • Published: 12/26/2013
  • Est. Priority Date: 12/02/2010
  • Status: Active Grant
First Claim
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1. A method for reporting channel state, comprising:

  • detecting, by a User Equipment (UE), configuration information of Channel State Information-Reference Signal (CSI-RS);

    determining, by the UE, according to detection result, number of ports required to report channel state based upon the CSI-RS;

    determining, by the UE, CSI-RS based Precoding Matrix Indicator (PMI) feedback scheme to be adopted by the UE according to the determined number of ports and preset corresponding relationship between the number of ports and feedback scheme, upon determining that the eNB is to map data of Physical Downlink Shared Channel (PDSCH) onto P (number) CSI-RS ports for transmission according to a codebook-based precoding scheme, wherein the codebook-based precoding scheme is a scheme as represented in the formula of

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