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DECENTRALIZED RADIO FREQUENCY IDENTIFICATION SYSTEM

  • US 20080174410A1
  • Filed: 01/08/2008
  • Published: 07/24/2008
  • Est. Priority Date: 01/08/2007
  • Status: Active Grant
First Claim
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1. A decentralized RFID system comprising:

  • a first reader for transmitting a first carrier signal;

    a second reader for transmitting a second carrier signal;

    a tag for receiving the first and second carrier signals, wherein the tag is responsive to the first carrier signal to transmit a first backscatter signal, and wherein the tag is responsive to the second carrier signal to transmit a second backscatter signal; and

    wherein the first and second readers further include a first processor and a second processors, respectively, and wherein the first processor measures a degree of interference from the second carrier signal, and wherein the second processor measures a degree of interference from the first carrier signal, the first and second processor each executing instructions for adjusting a respective transmission power level of the first and second carrier signals being transmitted from the first and second readers, respectively, as a function of the measured degree of interference.

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