Patent Document ID: 9449205
Application ID: 14577037

Base Claim:
1. A method for identifying a specific RFID tag, the method comprising: sending and receiving RF signals, using an RFID reader, to detect RFID tags and obtain signal parameter information associated with the RFID tags; determining a received signal strength indication (RSSI) value for each of the RFID tags; determining an occurrence frequency value for each of the RFID tags; calculating a tag score for each of the RFID tags using both the RSSI value and occurrence frequency value for the respective RFID tags; determining a difference between a highest tag score of the calculated tag scores for the RFID tags and a next highest tag score of the calculated tag scores for the RFID tags; and comparing the difference with a first threshold value; and identifying the RFID tag having the highest tag score as the specific RFID tag in response to the difference being greater than the first threshold value.

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Claim 3:
3. The method of claim 1 further comprising normalizing the RSSI value and occurrence frequency value by dividing the RSSI value by the maximum detected RSSI value, and by dividing the occurrence frequency value by the maximum detected occurrence frequency value.