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Reference beacon identification using transmission sequence characteristics

  • US 7,411,548 B2
  • Filed: 04/12/2006
  • Issued: 08/12/2008
  • Est. Priority Date: 04/12/2006
  • Status: Expired due to Fees
First Claim
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1. A method of transmitting transmitter identification information, compnsing:

  • sequentially transmitting a plurality of signal segments, each signal segment being characterized by a frequency parameter and a time parameter, wherein at least one of the frequency and the time parameters of each signal segment is determined in accordance with the transmitter identification information,wherein a difference in the frequency parameters of adjacent signal segments is indicative of a portion of the transmitter identification information,wherein the time parameter of each signal segment includes a start time of the signal segment, andwherein the start time of a signal segment relative to the other signal segments is indicative of a position of the signal segment within the plurality of signal segments.

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