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2007 IEEE International Conference on Automation and Lofistics

作者： Song-sen YU Yiju Zhan Yong-hua Wang Department of Computer University of Nanchang Nanchang Jianxi Province P.R.China School of Technology SUN YAT-SEN University Guangzhou Guangdong Province P.R.China School of Infornation science and Technology SUN YAT-SEN University Guangzhou Guangdong Province P.

ISBN: (纸本)9781424415304;1424415306

There are two basic approaches to solve the tag collision: deterministic collision resolution and stochastic collision resolution. These resolutions are all in the assumption that the number of the tags in the area doesn’t change. This algorithm gets over this disadvantage;the tags can enter into the reader’s area in the dynamic mode at any moment. According to the reader’s identified result each time, the tags can modify their responsive probability in the incremental or degressive mode. This bi-directional operation considers the impartiality of identification. This algorithm adopts Markov chain, and provides the analysis of the efficiency in the situation that tags appear in different patterns.

关键词： Binary exponential index RFID anti-collision algorithm Markov chain

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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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An Approach of Adjusting Frame Size in anti-collision algorithm for Active RFID System

An Approach of Adjusting Frame Size in Anti-Collision Algori...

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2011 IEEE 13th International Conference on Communication Technology(ICCT 2011)

作者： Zhiyong Luo Key Laboratory of Network control & Intelligent Instrument (Chongqing University of Posts and Telecommunications),Ministry of Education,Chongqing,China Yifan Shen,Heng Wang,Jing Jiang Key Laboratory of Network control & Intelligent Instrument (Chongqing University of Posts and Telecommunications),Ministry of Education,Chongqing,China

Specific method which is used to adjust frame size is not given by the Dynamic Frame Slotted ALOHA algorithm in the ISO/IEC18000-7 air interface *** solve this problem,an approach is proposed in this *** Slot Size is analyzed *** the condition of determined Slot Size,the number of unidentified tags around the Reader after the initial collection round is *** frame size will be adjusted according to this *** shows that the throughputs of active RFID system can be very close to the maximum theoretical value when the proposed mechanism is *** MATLAB,for 100 tags,simulation results indicate that the throughputs of RFID system are steadily remained a high performance by using this approach.

关键词： RFID Dynamic Frame Slotted ALOHA anti-collision algorithm throughputs

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A New Kind of RFID Reader anti-collision algorithm

A New Kind of RFID Reader Anti-collision Algorithm

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4th International Conference on Circuits and Systems for Communications (ICCSC 2008), vol.2

作者： Leian Liu Dashun Yan Xiaozheng Lai Shengli Lai College of Computer Science & Engineering Zhongkai University of Agriculture and Technology Guangzhou China School of Electronic and Information Engineering South China University of Technology Guangzhou China

Reader collision problem is the most important problem in RFID reader network and which must be solved in order to make sure that RFID reader network works normally. Methods which are used to solve the reader collision problem are called as reader anti-collision algorithms. The goods and bads of the reader anti-collision algorithms play a vital role to the efficiency of the whole network system. In this paper, the reader collision problem is researched in detail and its different styles are summarized. On the basis of researching the existing algorithms, a new kind of reader anti-collision algorithm is proposed. By the simulation analysis, we can get the result that the proposed algorithm has better performance compared with others.

关键词： Radio Frequency Identification Reader collision problem anti-collision algorithm

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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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The 4th International Conference on Wireless Communications, Networking and Mobile Computing(第四届IEEE无线通信、网络技术及移动计算国际会议)

作者： Yue Guo Ligang Hou Shuqin Geng Wuchen Wu VLSI & System Lab Beijing University of Technology Beijing 100022 P.R.China

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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Power efficient anti-collision algorithm for RFID technology with added data security feature and its Implementation in VHDL

Power efficient anti-collision algorithm for RFID technology...

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IEEE Power, Communication and Information Technology Conference

作者： Joyashree Bag Rashmi Ranjan Sahoo Subir Kumar Sarkar Dept. of E.T.C.E. Jadavpur University

ISBN: (纸本)9781479974566

In the field of RFID technology, a power efficient tag anti-collision protocol plays an important role in the entire system based on this technology. The query Tree scheme is one of the most important anti-collision protocols for RFID technology. Researchers have developed different Query algorithm with improved features, each time reducing the number of query iteration and idle slots. The EPC Gen protocol uses this anti-collision algorithm, which is popularly known and globally accepted for its secured data transmission feature but having a huge load of data itself. Low power design and implementation of the anti-collision protocol is another challenging area for cost effective RFID system. In our research work, we have implemented the protocol as low power single chip solution. Furthermore, we have included a data security scheme in this protocol for secured data transmission. VHDL code has been used for design purpose, Xilinx ISE 14.3 simulation tools to simulate the design and Kintex-7 FPGA board for implementation purpose. We have also implemented other anti-collision protocols with different bit size and a comparative study of performance evaluation has been provided.

关键词： RFID anti-collision algorithm Query Tree PCA rule VLSI RTL schematic FPGA

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RFID anti-collision Detection algorithm Based on Improved Adaptive N-Tree

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INTERNATIONAL JOURNAL OF ONLINE ENGINEERING 2018年第10期14卷 129-139页

作者： Li, Yuxia Zhou, Zhinan Jiangsu Maritime Tech Inst Nanjing Jiangsu Peoples R China Hebei Agr Univ Baoding Peoples R China

This paper proposes a type of improved adaptive N-tree anti-collision algorithm based on the traditional one for RFID system by combination with maximum likelihood estimation and probe pre-detection. This algorithm inherits some features from Alpha- and tree-based anti-collision algorithms and effectively restrain the star-vation of the two algorithms. It has also filled in the gaps of tag collision with higher probability. The study turns out that the improved adaptive N-tree anti-collision algorithm as proposed can feature adaptive choice of the value N of the tree, length breaks of free timeslots, restraints on defects such as more tag classification and higher collision probability just as what the traditional tree-based algorithm has. N-tree built by level-to-level frame identification eliminates the free timeslots, and improves the tag identification precision for the RFID system. The results from simulation experiment reveal that the algorithm proposed in this paper has lower Error Sampling Reckon (ESR) and Throughput Rate Deviation (TRD), and features large throughput rate (87%), low delay of tag recognition and minimum timeslots, and etc. hence to be better applied in large-scale logistics and other fields where fast information recognition is involved.

关键词： radio frequency identification anti-collision algorithm throughput rate identification time free timeslot

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An RFID anti-collision Q-value algorithm research

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INTERNATIONAL JOURNAL OF RF TECHNOLOGIES-RESEARCH AND APPLICATIONS 2019年第1-2期10卷 27-37页

作者： Chen, Zhongping Hunan Vocat Coll Engn Changsha 410151 Hunan Peoples R China

RFID technology is an important technology of the Internet of Things. The key to realizing large-scale applications is to improve the efficiency of the system. For this reason, a novel RFID anti-collision Q-value algorithm is proposed, which changes the Q-rounding of the original Q-value algorithm to 2Q rounding, so that the adjusted frame length is closer to the theoretical optimal value, thereby the convergence is effectively reduced. Slot utilization of time is improved. By comparison, the actual throughput of the improved algorithm remains at a high level (average is 0.311 3), the total number of time slots is reduced by 26.7% when it is compared with the original Q-value algorithm.

关键词： Internet of things Radio Frequency Identification(RFID) anti-collision algorithm EPC-C1G2 Q-algorithm

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A Non -integral-Q algorithm for RFID System in anti-collision 2

A Non -integral-Q Algorithm for RFID System in Anti-collisio...

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2nd International Conference on Control, Automation and Robotics (ICCAR)

作者： Zhu, Boyuan Wang, Jue Zeng, Guigen Nanjing Univ Posts & Telecommun Sch Telecommun & Informat Engn Nanjing Jiangsu Peoples R China

ISBN: (纸本)9781467398596

RFID technology is one of four basic technologies in the Internet of Things. In order to realize its intensive and large-scale uses, the key point is to increase the identification speed of tags. The conventional algorithm only uses integral Q which decreases the efficiency dramatically. In order to decrease the convergence time and rise the slot efficiency, this article proposes a novel anti-collision algorithm based on non integral Q-a key parameter determining the frame length. By turning the rounding Q in the conventional Q-algorithm into rounding 2(Q), the frame length can get closer to its optimal value. Monte-Carlo simulation result shows that the improved algorithm can keep the throughout rate in a relatively high level (about 0.31) and decrease the total number of time-slots by about 30%.

关键词： RFID anti-collision algorithm EPC-CIG2 Q-algorithm

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