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Wireless communication method, wireless communication system and base station

  • US 8,537,946 B2
  • Filed: 01/27/2009
  • Issued: 09/17/2013
  • Est. Priority Date: 01/28/2008
  • Status: Expired due to Fees
First Claim
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1. A wireless communication method of conducting wireless communication between a mobile station and a base station by using an Orthogonal Frequency Division Multiplexing (ODFM) modulation scheme, the method comprising:

  • notifying the mobile station of a notification channel from the base station;

    in the mobile station,providing a channel to be frame synchronized with the notification channel and transmitting an OFDM symbol to the base station;

    in the base station,removing a guard interval from the transmitted OFDM symbol at two different timings to obtain two effective symbols;

    detecting two correlation peaks between the two respective effective symbols and a known symbol;

    calculating a timing correction amount by adding a timing, which corresponds to a guard interval removed when generating the effective symbols exhibiting a first correlation peak detected within a predetermined timing detection range that is shorter than an effective symbol length of the two correlation peaks, to a differential between the first correlation peak and reference timing of the base station;

    transmitting the timing correction amount to the mobile station by means of a timing correction burst;

    in the mobile station,correcting transmission timing in accordance with the timing correction amount; and

    transmitting a communication channel assignment request to the base station at the corrected transmission timing.

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