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RADIO COMMUNICATION METHOD, RADIO COMMUNICATION SYSTEM, AND RADIO COMMUNICATION DEVICE

  • US 20090028262A1
  • Filed: 07/29/2005
  • Published: 01/29/2009
  • Est. Priority Date: 08/04/2004
  • Status: Abandoned Application
First Claim
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1. A wireless communication method for carrying out wireless communication using a first wireless communication apparatus comprising a plurality of first antennas and a second wireless communication apparatus comprising a plurality of second antennas, the wireless communication method comprising:

  • a first channel estimation step of calculating at the first wireless communication apparatus a first channel estimation value for a first MIMO channel formed between the plurality of first antennas and the plurality of second antennas;

    a second channel estimation step of calculating at the second wireless communication apparatus a second channel estimation value for a second MIMO channel formed between the plurality of second antennas and the plurality of first antennas;

    an information generation step of generating at the first wireless communication apparatus first channel information from the calculated first channel estimation value;

    a channel matching determination step of determining at the second wireless communication apparatus whether or not the second MIMO channel and the first MIMO channel match based on the calculated second channel estimation value and the first channel information;

    a first secret key generating step of generating at the first wireless communication apparatus a first secret key from the first channel estimation value only when it is determined in the channel matching determination step that the channels match; and

    a second secret key generating step of generating at the second wireless communication apparatus a second secret key from the second channel estimation value only when it is determined in the channel matching determination step that the channels match.

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