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An Improved Anti-Collision Algorithm for RFID System

Yue Guo, Ligang Hou, Shuqin Geng, Wuchen Wu

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Abstract

RFID system is widely used in wireless communication systems. Tag collision, causing the RFID reader cannot identify the tag data, is a serious problem when several tags use the same communication channel simultaneously. Framed slotted ALOHA algorithm is normally used to solve the RFID collision problem. However, it requires an exponentially increasing number of slots with the tags number increasing. An improved anti-collision algorithm is presented in this paper, which has a lower collision probability and needs fewer slots. The proposed algorithm has been used in a 433 MHz RFID system and reduces the tag collision probability successfully.

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What this paper is about

RFID system is widely used in wireless communication systems. Tag collision, causing the RFID reader cannot identify the tag data, is a serious problem when several tags use the same communication channel simultaneously. Framed slotted ALOHA algorithm is normally used to solve the RFID collision problem. However, it requires an exponentially increasing number of slots with the tags number increasing. An improved anti-collision algorithm is presented in this paper, which has a lower collision probability and needs fewer slots. The proposed algorithm has been used in a 433 MHz RFID system and reduces the tag collision probability successfully.

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OpenAlex reports 4 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

RFID system is widely used in wireless communication systems. Tag collision, causing the RFID reader cannot identify the tag data, is a serious problem when several tags use the same communication channel simultaneously. Framed slotted ALOHA algorithm is normally used to solve the RFID collision problem. However, it requires an exponentially increasing number of slots with the tags number increasing. An improved anti-collision algorithm is presented in this paper, which has a lower collision probability and needs fewer slots. The proposed algorithm has been used in a 433 MHz RFID system and reduces the tag collision probability successfully.

Key concepts: Aloha, Collision, Computer science, Collision problem, Channel (broadcasting), Wireless, Algorithm, Algorithm design

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