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Uplink Precoding For Retransmission Without Explicit Precoding Instruction

  • US 20120087424A1
  • Filed: 10/03/2011
  • Published: 04/12/2012
  • Est. Priority Date: 10/06/2010
  • Status: Active Grant
First Claim
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1. A method for a wireless communication device to re-transmit a data transport block to a base station, the method comprising:

  • receiving, at the wireless communication device, information of a precoding matrix from a base station wherein the precoding matrix comprises of a first precoding submatrix and a second precoding submatrix;

    transmitting a first data transport block from a first set of at least two antennas of the wireless communication device according to the first precoding submatrix and a second data transport block from a second set of at least two antennas of the wireless communication device according to the second precoding submatrix;

    receiving from the base station a retransmission request for the second transport block; and

    retransmitting the second data transport block according to a retransmission precoding matrix from at least one antenna of the first set of antennas and at least one antenna of the second set of antennas in response to the retransmission request.

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