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.
4. The method of claim 1 further comprising assigning a different weight to at least one signal parameter value of the signal parameter information over another signal parameter value in the calculation of the tag scores by multiplying the at least one signal parameter value by a respective multiplier.