Methods of identifying rfid tag for preventing rfid tag collision, rfid reader and rfid tag using the same

PURPOSE: A method of identifying RFID tag for preventing RFID tag collision, an RFID reader and an RFID tag using thereof are provided to reduce the tag recognition time using the code for the error detection like CRC-16. CONSTITUTION: A query command of the quality is transmitted to the RFID tag having in the ready state. An error detection code is received from the RFID tag which received the query command. In case the error detection code is received without collision, the confirmation command is generated(412). The confirmation command is transmitted to the RFID tag which transmitted the error detection code as described above(414). The tag information(460) including the protocol control and electronic product code of the RFID tag transmitting the error detection code is received.