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International Joint Conference on Bioinformatics, Systems Biology and Intelligent Computing

作者： Xue, Yao-feng Sun, Hua-li Zhu, Zhi-ting E China Normal Univ Distance Educ Coll E Educ Syst Engn Res Ctr Shanghai 200062 Peoples R China Shanghai Univ Sch Management Shanghai Peoples R China

ISBN: (纸本)9780769537399

This paper introduces the radio frequency identification (RFID) technology and the RFID anti-collision algorithms. The application mode of the RFID dynamic grouping anti-collision algorithm based on fuzzy c-means (FCM) clustering theory is stated. The selection of RFID tag grouping indexes is presented. The steps of the proposed anti-collision algorithm are developed. The simulation results show the algorithm can improve the stability and the reading accuracy of the RFID system.

关键词： RFID Dynamic grouping anti-collision algorithm FCM

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MRCT: An Efficient Tag Identification Protocol in RFID Systems with Capture Effect

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KSII TRANSACTIONS ON INTERNET AND INFORMATION SYSTEMS 2013年第7期7卷 1624-1637页

作者： Choi, Sunwoong Choi, Jaehyuk Yoo, Joon Kookmin Univ Sch Elect Engn Seoul 136702 South Korea Gachon Univ Dept Software Design & Management Songnam 461701 South Korea

In RFID systems, one important issue is how to effectively address tag collision, which occurs when multiple tags reply simultaneously to a reader, so that all the tags are correctly identified. However, most existing anti-collision protocols assume isotropic collisions where a reader cannot detect any of the tags from the collided signals. In practice, this assumption turns out to be too pessimistic since the capture effect may take place, in which the reader considers the strongest signal as a successful transmission and the others as interference. In this case, the reader disregards the other collided tags, and in turn, fails to read the tag(s) with weaker signal(s). In this paper, we propose a capture effect-aware anti-collision protocol, called Multi-Round collision Tree (MRCT) protocol, which efficiently identifies the tags in real RFID environments. MRCT deals with the capture effect as well as channel error by employing a multi-round based identification algorithm. We also analyze the performance of MRCT in terms of the number of slots required for identifying all tags. The simulation results show that MRCT significantly outperforms the existing protocol especially in a practical environment where the capture effect occurs.

关键词： anti-collision algorithm capture effect collision tree RFID tag identification

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Enhanced TDMA Based anti-collision algorithm with a Dynamic Frame Size Adjustment Strategy for Mobile RFID Readers

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SENSORS 2009年第2期9卷 845-858页

作者： Shin, Kwang Cheol Park, Seung Bo Jo, Geun Sik Inha Univ Sch Comp & Informat Engn Inchon 402751 South Korea

In the fields of production, manufacturing and supply chain management, Radio Frequency Identification (RFID) is regarded as one of the most important technologies. Nowadays, Mobile RFID, which is often installed in carts or forklift trucks, is increasingly being applied to the search for and checkout of items in warehouses, supermarkets, libraries and other industrial fields. In using Mobile RFID, since the readers are continuously moving, they can interfere with each other when they attempt to read the tags. In this study, we suggest a Time Division Multiple Access (TDMA) based anti-collision algorithm for Mobile RFID readers. Our algorithm automatically adjusts the frame size of each reader without using manual parameters by adopting the dynamic frame size adjustment strategy when collisions occur at a reader. Through experiments on a simulated environment for Mobile RFID readers, we show that the proposed method improves the number of successful transmissions by about 228% on average, compared with Colorwave, a representative TDMA based anti-collision algorithm.

关键词： Mobile RFID reader anti-collision algorithm Reader collision problem

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Parametric Heuristic Schemes for Performance Improvement in Frame Slotted Aloha based RFID Systems

Parametric Heuristic Schemes for Performance Improvement in ...

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International Conference on ICT for Smart-Society (ICISS)

作者： Dhakal, Sunil Shin, Seokjoo Chosun Univ Dept Comp Engn Kwangju South Korea

ISBN: (纸本)9781479901456

The performance of the Dynamic Frame Slotted Aloha (DFSA) based RFID anti-collision algorithm depends on the dynamically controlled frame size with the contending tags. Many literatures exploit the tag estimation method and attempt to enhance the system performance by regulating the frame size equal to the estimated tags. Unless the contending tag population is exactly estimated and the frame size is optimally adjusted the system performance cannot be maximized. However, it is always a difficult task to precisely estimate the contending tags in RFID systems. Thus to maximize the system performance, we used a parametric heuristic approach and proposed two simple schemes, namely ID-FSA (Improvised Dynamic-FSA) and ERP-FSA (Exponential Random Partitioning-FSA) algorithms. Unlike other algorithms, ID-FSA algorithm adjusts the optimal frame length for estimated tag population and ERP-FSA adjusts the contending tag population in such a way that the applied static frame size becomes optimal. The performance of our parametric heuristic schemes reveals that there are some potential benefits that can be achieved by adjusting the tags equivalent to the optimal frame length, moreover, regulating the optimal frame length for estimated tags can maximize the system performance.

关键词： RFID system anti-collision algorithm Frame Slotted Aloha Optimal Frame Length Tag Estimation

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Cardinality Estimation-based Adaptive Multi-tree Splitting algorithm for RFID System

Cardinality Estimation-based Adaptive Multi-tree Splitting A...

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International Conference on Measurement, Instrumentation and Automation (ICMIA 2012)

作者： Tan, Yong Liu, Guixiong Wu, Guoguang S China Univ Technol Sch Mech & Automot Engn Guangzhou 510640 Guangdong Peoples R China

ISBN: (纸本)9783037855454

This paper proposes a cardinality estimation-based adaptive multi-tree splitting (CEAMS) algorithm. Tag number is estimated by using the depth information obtained from the first tag identification and adaptively assigns the splitting strategy according to the splitting subset rule table. Simulation results show that the average total number of timeslots can be reduced by 65% compared with DBS and the system throughput is about 0.52 when the number of tags ranged from 5 similar to 1000.

关键词： RFID anti-collision algorithm Tag number estimate Adaptive multi-tree splitting

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AN IMPROVED anti-collision algorithm USING HASH METHOD IN RFID SYSTEM

AN IMPROVED ANTI-COLLISION ALGORITHM USING HASH METHOD IN RF...

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2009 IEEE International Conference on Communication Technology and Applications（ICCTA2009）

作者： Xudong Yang,Ziming Wang Beijing Key Laboratory of Intelligent Telecommunications Software and Multimedia Beijing University of Posts and Telecommunications Beijing,China

Tag anti-collision algorithm is a significant technique in RFID *** paper introduced its two wide used categories,stochastic anti-collision algorithm and deterministic anti-collision algorithm,and then proposed an improved algorithm using hash method. The proposed algorithm divides the tags into a number of groups using hash function and allows only the tags in groupO to *** there are more than one tag in groupO,divide this group in to a number of *** hash method will avoid that those conflict tags were divided into the same *** simulation performance shows that the algorithm is effective especially in high-load situation.

关键词： RFID anti-collision algorithm hash tag identification

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ENHANCED ENERGY-SAVING anticollision algorithmS WITH IMPROVING THROUGHPUT FOR RFID SYSTEM

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Journal of Electronics(China) 2013年第1期30卷 40-48页

作者： Luo Zhiyong Jiang Jing Wang Ping Ministry of Education Key Lab of Industrial Wireless Network and Networked Control Chongqing University of Posts and Telecommunications

Tag collision algorithm is a key issue for energy saving and throughput with Radio Frequency IDentification (RFID) system more popular in sensing infrastructure of covering wider area on a large scale. Exploiting low energy consumption strategy would enable longer operational life of tags and reader with battery energy supply. And improving throughput is required on a large scale to preserve the capability of the correct reception. Therefore, this paper proposes an enhanced anti-collision algorithm called Dynamic Slotted with Muting (DSM), which uses multiple slots within a frame per node in a binary tree and takes tag estimation function to optimize the number of slots, and adds a mute command to put identified tags silence. The performance of the proposed algorithm is analytically provided, and simulation results show that DSM saves more than 40% energy consumptions both at reader and tags, and improves more than 35% throughput compared to the existing algorithms. Thus our algorithm is demonstrated to perform efficient energy savings at reader and tags with throughput improvement.

关键词： anti-collision algorithm Radio Frequency IDentification （RFID） Energy consumption Throughput Query tree

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APPLIED RESEARCH OF RFID TECHNOLOGY IN EXPRESS LOGISTICS INDUSTRY 12

APPLIED RESEARCH OF RFID TECHNOLOGY IN EXPRESS LOGISTICS IND...

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International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Guo, Peng Zhang, Hai-Yan Li, Yong-Wei Shijiazhuang Univ Dept Elect & Informat Engn Shijiazhuang 050035 Peoples R China Shijiazhuang Posts & Telecommun Tech Coll Dept Postal Commun Management Shijiazhuang 050021 Peoples R China Hebei Univ Sci & Technol Coll Elect Engn Shijiazhuang 050018 Peoples R China

ISBN: (纸本)9781479902606

In order to improve the efficiency of express logistics enterprises, a mail automatic identification system with low power consumption is designed based on radio frequency identification technology. Considering the characteristics of express logistics enterprises, an improved anti-collision algorithm on the basis of binary search tree is introduced. The algorithm can modify the search preilX by a matrix to reduce the number of search. MATLAB simulation results show that the algorithm can effectively enhance the efficiency of tag identification and reduce the amount of data transmission compared with binary search algorithm and binary collision algorithm.

关键词： RFID Express logistics anti-collision algorithm MSP430 Low power consumption

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An Improved anti-collision algorithm in RFID System

An Improved Anti-collision Algorithm in RFID System

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2009 Ninth International Conference on Hybrid Intelligent Systems(第九届混合智能系统国际会议 HIS 2009)

作者： Jia-lin Ma Xu Wei Software College Shenyang Normal University Shenyang China

Based on the analysis of the EPC Binary-tree algorithm, an improved algorithm is proposed. Compared with EPC Binary-tree algorithm the proposed algorithm will get more efficiency, higher utilization, and much more pre... 详细信息

关键词： Radio Frequency Identification Manchester code anti-collision algorithm Binary search

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An Improved anti-collision algorithm for RFID System

An Improved Anti-collision Algorithm for RFID System

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4th International Conference on Wireless Communications, Networking and Mobile Computing

作者： Guo, Yue Hou, Ligang Geng, Shuqin Wu, Wuchen Beijing Univ Technol VLSI & Syst Lab Beijing 100022 Peoples R China

ISBN: (纸本)9781424421077

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 433MHz RFID system and reduces the tag collision probability successfully.

关键词： RFID anti-collision algorithm frequency channel

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