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Positioning method using mobile terminal and mobile terminal having positioning function

  • US 7,047,022 B2
  • Filed: 11/02/2001
  • Issued: 05/16/2006
  • Est. Priority Date: 11/07/2000
  • Status: Active Grant
First Claim
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1. A positioning method using a mobile terminal, said positioning method comprising:

  • acquiring, by said mobile terminal, position information on a neighboring mobile terminal from said neighboring mobile terminal;

    gradually changing a field strength of a transmitted signal that is transmitted from said mobile terminal;

    receiving, by said mobile terminal, a response signal from said neighboring mobile terminal in response to said transmitted signal;

    estimating a distance between said mobile terminal and said neighboring mobile terminal, said estimation of said distance based on the field strength of the transmitted signal at a time that said response signal is received; and

    calculating a position of said mobile terminal based on the estimated distance and said position information acquired from said neighboring mobile terminal.

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