YA-NING YAN et al: A METHOD TO IMPROVE IDENTIFICATION PERFORMANCE OF UHF RFID SYSTEMS
نویسندگان
چکیده
Dynamic frame slotted ALOHA (DFSA) has been widely adopted to reduce tag collisions in Ultra High Frequency (UHF) radio frequency identification (RFID) system. In the existing DFSA algorithms, the reader needs to accurately estimate tag backlog and set a new frame length which is equal to the backlog to close to the theoretical maximum throughput 36.8% of the framed ALOHA. To overcome throughput limitation and improve the identification efficiency, we propose an efficient slot-hopped algorithm based on ALOHA protocol. The slot-hopped mechanism was used in each frame to skip collision and idle slots. Accordingly, the scheme significantly reduces collision and idle slots. The performance analysis and simulation results show that the proposed algorithm outperforms other ALOHA-based protocols .
منابع مشابه
YA-NING YAN et al: AN EFFICIENT TAG IDENTIFICATION ALGORITHM BASED ON IMPROVED COLLISION
Tag collision has a negative impact on the performance of RFID systems. In this paper, we propose an algorithm termed anti-collision protocol based on improved collision detection (ACP-ICD). In this protocol, dual prefixes matching and collision bit detection technique are employed to reduce the number of queries and promptly identify tags. According to the dual prefixes matching method and col...
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