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METHOD AND DEVICE FOR TRANSMITTING/RECEIVING CHANNEL STATE INFORMATION IN COORDINATED MULTIPOINT COMMUNICATION SYSTEM

  • US 20130058307A1
  • Filed: 06/08/2011
  • Published: 03/07/2013
  • Est. Priority Date: 06/08/2010
  • Status: Active Grant
First Claim
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1. A method for transmitting CSI of multiple base stations from a user equipment, the method comprising:

  • transmitting Channel State Information (CSI) including long-term-wideband Precoding Matrix Information (PMI) and short-term-subband PMI regarding a first base station;

    transmitting CSI which includes long-term-wideband PMI regarding a second base station and does not include short-term-subband PMI regarding the second base station; and

    transmitting CSI including the short-term-subband PMI regarding the second base station upon receiving a request for the short-term-subband PMI regarding the second base station.

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