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Terminal station apparatus, base station apparatus, transmission method and control method

  • US 10,396,924 B2
  • Filed: 07/19/2018
  • Issued: 08/27/2019
  • Est. Priority Date: 10/01/2009
  • Status: Active Grant
First Claim
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1. A terminal apparatus comprising:

  • circuitry, which, in operation, generates a reference signal using an orthogonal sequence, which is associated with one of a plurality of layer numbers based on one of a plurality of associations; and

    a transmitter, which, in operation, transmits the reference signal multiplexed with a data signal having a bandwidth that is different from a bandwidth of a data signal transmitted by another terminal apparatus,wherein the layer numbers correspond to a first layer, a second layer, a third layer and a fourth layer, and the plurality of associations include;

    (i) a first association, in which the orthogonal sequence of [1, 1] is associated with the first layer, the orthogonal sequence of [1, 1] is associated with the second layer, the orthogonal sequence of [1, −

    1] is associated with the third layer, and the orthogonal sequence of [1, −

    1] is associated with the fourth layer;

    (ii) a second association, in which the orthogonal sequence of [1, −

    1] is associated with the first layer, the orthogonal sequence of [1, −

    1] is associated with the second layer, the orthogonal sequence of [1, 1] is associated with the third layer, and the orthogonal sequence of [1, 1] is associated with the fourth layer;

    (iii) a third association, in which the orthogonal sequence of [1, 1] is associated with each of the first layer, the second layer, the third layer and the fourth layer; and

    (iv) a fourth association, in which the orthogonal sequence of [1, −

    1] is associated with each of the first layer, the second layer, the third layer and the fourth layer.

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