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Communication Systems

  • US 20110165834A1
  • Filed: 02/28/2011
  • Published: 07/07/2011
  • Est. Priority Date: 08/18/2006
  • Status: Active Grant
First Claim
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1. A base station comprising:

  • a transmitting unit configured to transmit a preamble to a subscriber station or a mobile station in a down link subframe and transmit a relay amble to a relay station in a downlink subframe, wherein a transmission timing of the preamble and a transmission timing of the relay amble are not the same.

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