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BASE STATION APPARATUS, USER APPARATUS, AND METHOD USED IN MOBILE COMMUNICATIONS SYSTEM

  • US 20100103890A1
  • Filed: 03/17/2008
  • Published: 04/29/2010
  • Est. Priority Date: 03/20/2007
  • Status: Active Grant
First Claim
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1. A base station apparatus in a mobile communications system which uses orthogonal frequency division multiplexing (OFDM) for downlink, comprising:

  • a unit which generates a first signal;

    a unit which generates a second signal;

    a unit which multiplexes the first signal and the second signal to map the multiplexed signals to a sub-carrier to generate a transmit symbol; and

    a mapping determining unit which determines a position of mapping the second signal to the sub-carrier, wherein the mapping determining unit determines the mapping position based on a cell ID or cell group ID, and a mapping pattern defined with a sequence having a two-stage structure.

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