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Method and apparatus for transmitting control information in wireless communication system

  • US RE47,912 E1
  • Filed: 10/05/2016
  • Issued: 03/17/2020
  • Est. Priority Date: 01/17/2010
  • Status: Active Grant
First Claim
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1. A method for, at a user equipment (UE), transmitting control information an uplink signal through a physical uplink control channel (PUCCH) in a wireless communication system, the method comprising:

  • generating a first modulation symbol sequence from control information;

    spreading a first modulated symbol sequence such that the first modulated symbol sequence corresponds to a plurality of single carrier-frequency division multiplexing (SC-FDMA) symbols in a first slot, to obtain a plurality of second modulated symbol sequences corresponding to the plurality of SC-FDMA symbols;

    and performing a discrete Fourier transform (DFT) precoding on the plurality of second modulated symbol sequences to obtain a plurality of complex symbol sequences; and

    transmitting the a plurality of complex symbol sequences through a plurality of single carrier-frequency division multiplexing (SC-FDMA) symbols of a first slot of the PUCCH,wherein each sequence of the plurality of the complex symbol sequences carries discrete Fourier transformed (DFTed) symbols related to a respective sequence of the plurality of second modulation symbol sequences, wherein scrambling is applied to the plurality of second modulated symbol sequences at SC-FDMA symbol level using a multiplication of ci by a respective modulated symbol sequence of the plurality of second modulated symbol sequences, andwherein ci is a scrambling value for a corresponding SC-FDMA symbol.

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