APPARATUS AND METHOD FOR LEARNING-BASED ANTI-COLLISION IN RFID SYSTEMS

摘要

A device and a method for learning-based anti-collision in an RFID(Radio Frequency IDentification) system are provided to reduce collision when an RFID tag selects a slot for transmitting information after previous collision information is learned. An RFID reader(200) includes a reading and interpreting function. An RFID tag(100) selects a slot for transmitting ID information and data based on learned collision information of each slot when data is transmitted to the RFID reader by learning the collision information of each slot. The RFID tag includes a learning unit(300) storing the learned collision information of each slot. The RFID reader reads tag information over multiple rounds by using a plurality of slots. The round includes a request time for sending a reading command including the number of slots corresponding to the round from the RFID reader to the RFID tag, a frame time responding to the slot selected by a learning technique in the RFID tag, and a sleep time transmitting a sleep command from the RFID reader to the RFID tag read by the RFID reader. The response is one of a collision state, a read success state, and an empty state.