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检索条件"主题词=Anti-collision algorithm"

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An Advanced anti-collision algorithm Based on Inter tag Communication Mechanism in RFID-Sensor Network 11

An Advanced Anti-collision Algorithm Based on Inter tag Comm...

引用

11th IEEE International Conference on Mobile Ad Hoc and Sensor Systems

作者： Li, Menglong Xie, Huan Wang, Weidong Li, Xiuhua Wang, Chaowei Zhang, Yinghai Beijing Univ Posts & Telecommun Informat & Elect Technol Lab POB 116 Beijing Peoples R China

ISBN: (纸本)9781479960361

In this paper, an advanced anti -collision algorithm in RFID-sensor network based on inter -tag communication mechanism is proposed to improve the performance of the system. By employing the "Tag Communication Slot" (TCS) and designing the relevant hardware, the tags can communicate with each other, transmit useful data to fewer tags and reduce the number of tags participating in the identification process. In this way, we can efficiently reduce the collision rate with the increase of tag number and improve the tag starvation problem in Dynamic Framed Slotted ALOHA algorithm (DFSA). The simulation results show that the TCS algorithm can greatly improve the system stability and identification efficiency especially in the case of large tag number.

关键词： anti-collision algorithm DFSA RFID-sensor network

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Novel Modulo based Aloha anti-collision algorithm for RFID Systems

Novel Modulo based Aloha Anti-Collision Algorithm for RFID S...

引用

8th Annual IEEE International Conference on RFID (IEEE RFID)

作者： Hakeem, Mohammed J. Raahemifar, Kaamran Khan, Gul N. Ryerson Univ Dept Elect & Comp Engn Toronto ON M5B 2K3 Canada

ISBN: (纸本)9781479935871

RFID (Radio frequency Identification) has become an efficient way to identify, track and/or trace objects and people. Its importance has motivated scientists and researchers to examine the challenges that are slowing its expeditious deployment in various applications. RFID collision is a major challenge imposed by the wireless links shared among a reader and the many tags in the interrogation zone. In most proposed anti-collision algorithms, tags reply randomly to time slots chosen by the reader. Since two or more tags may choose the same slot, this Random Access (RA) causes garbled data at the reader side;therefore, the identification process fails. In this paper, we propose a new anti-collision algorithm that adopts a novel method for eliminating the theory of RA to enhance system efficiency and to reduce both the number of rounds between reader and tag and the number of collided/empty slots over existing algorithms. In this algorithm, tags use modulo function to choose tag owned time slot. Another advantage of this method is that the reader estimates the next frame size and compares it with the previously selected frame sizes that are saved in the reader to ensure there is no redundancy. The performance of the algorithm is simulated and compared with existent Aloha family algorithms.

关键词： RFID System anti-collision algorithm ALOHA Multiple tags Identification

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An Improved Binary Search RFID anti-collision algorithm 12

An Improved Binary Search RFID Anti-collision Algorithm

引用

12th International Conference on Computer Science and Education (ICCSE)

作者： Bai, Youjing Yang, Lvqing Zhang, Guoxing Xu, Yezi Xiamen Univ Software Sch Xiamen Peoples R China

ISBN: (纸本)9781509025084

At present, radio frequency identification technology has been widely used in many fields, such as data acquisition, transportation, logistics management and so on. However, the collision problem in RFID technology seriously affects the performance of RFID system. Aimed at the shortcomings of search times and traffic by the traditional binary search algorithm, this paper propose an improved binary search algorithm based on the combination of dynamic binary search algorithm and backward binary search algorithm. Experimental results show that the improved algorithm greatly reduces search times and the amount of data transmission, thereby improving the recognition efficiency.

关键词： RFID binary search anti-collision algorithm collision bits

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Research on hybrid of ALOHA and multi-fork tree anti-collision algorithm for RFID 10

Research on hybrid of ALOHA and multi-fork tree Anti-collisi...

引用

10th Annual International Conference of Information and Communication Technology (ICICT)

作者： Zhou, Weihui Jiang, Niande East China Univ Technol Yangtze River Coll Fuzhou 344000 Peoples R China East China Univ Technol Nanchang 330013 Peoples R China

The work aims at the problem of multi-tag collision in RFID system, then analysis the binary tree algorithm and ALOHA and points out their shortcomings, we proposed a Hybrid of ALOHA and Tree (HAMT) algorithm. The algorithm first uses the DFSA algorithm for tag identification, and dynamically selects the multi-fork tree algorithm for tag identification based on the number of unidentified tags secondly, thus ensuring that the tag is 100% identified, and improves recognition efficiency and shortens recognition time. The results of the simulation show that when the number of tags is about 1000, the recognition efficiency of the HAMT algorithm can reach around 0.72. So the HAMT algorithm can solve the multi-tag collision problem. (C) 2021 The Authors. Published by Elsevier B.V.

关键词： RFID Multi-fork tree ALOHA tags anti-collision algorithm

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An anti-collision algorithm of RFID Tags Based on CDMA

An Anti-collision Algorithm of RFID Tags Based on CDMA

引用

International Workshop on Internet of Things (IOT Workshop 2012)

作者： Zhang, Weijun Zhang, Shuping Zhang, Dawei Shenyang Aerosp Univ Sch Comp Shenyang 110000 Peoples R China Eastern Liaoning Univ Sch Informat Sci & Technol 118000 Dandong Dandong Peoples R China

ISBN: (纸本)9783642324260

Radio frequency identification (RFID) is rapidly come into our lives in recent years, and it is widely used in the areas of logistics, production, and transportation and so on. The technology of anti-collision is a key of RFID. Most of the anti-collision algorithms proposed before are based on TDMA. When the number of tags is very large. it can not well solve the problem. In this paper, an anti-collision algorithm based CDMA is proposed, using the m sequence as the spreading code and combined with the S-ALOHA algorithm that is known as CMS-ALOHA algorithm. This paper analyzes the throughput of CMS-ALOHA, and gives the mathematical analysis. Experimental results show that this algorithm has good performance.

关键词： RFID anti-collision algorithm CMS-ALOHA CDMA

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An Improved Dynamic Framed Slotted ALOHA anti-collision algorithm based on Estimation Method for RFID Systems

An Improved Dynamic Framed Slotted ALOHA Anti-collision Algo...

引用

IEEE International Conference on RFID (RFID)

作者： Xu, Ying Chen, Yifan Hunan Univ Coll Comp Sci & Elect Engn Changsha 410082 Hunan Peoples R China

ISBN: (纸本)9781479919376

In order to solve the collision problems between multiple RFID tags and improve the identification efficiency, this work presents an improved dynamic framed slotted ALOHA anti-collision algorithm for RFID systems. Based on the time slot distribution information, the algorithm estimates the average number of tags in each collision slot and then dynamically sets the frame size for unrecognized tags due to the collision between multiple tags. We theoretically analyzed the time complexity of the proposed algorithm. Simulation results demonstrate that our proposed algorithm outperforms other existing algorithms in the literature in terms of the identification efficiency and the total number of time slots.

关键词： RFID anti-collision algorithm ALOHA

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An Improved anti-collision algorithm for RFID System

An Improved Anti-collision Algorithm for RFID System

引用

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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Group Tower Cranes anti-collision algorithm

Group Tower Cranes Anti-collision Algorithm

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International Conference on Mechatronics and Control Engineering (ICMCE 2012)

作者： Chen, Guangzhong Zhang, Bing Yang, Yue Hunan Coll Informat Sch Mech & Elect Engn Changsha 410200 Hunan Peoples R China Cent S Univ Sch Traff & Transportat Engn Changsha 410075 Hunan Peoples R China

ISBN: (纸本)9783037855959

In order to solve tower cranes interference and collision problems in the construction site, the reason of group tower cranes collision in construction site is analyzed in detail and four types of typical tower cranes collision case are summed up. The different kinds of collisions among crane rope, cargo boom and balance arm are concluded and each of the collision is analyzed detailedly. At the same time, anti-collision methods are achieved in order to prevent the collision. The best anti-collision algorithm, confirmed well in practical construction site, is chosen for the different collision case.

关键词： Tower Crane Group Tower Cranes anti-collision algorithm

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Research on A dynamic binary stack anti-collision algorithm

Research on A dynamic binary stack anti-collision algorithm

引用

2nd International Conference on Applied Mechanics, Materials and Manufacturing (ICAMMM 2012)

作者： Yi, Jianjun Luo, Fei Chen, Shaoli Ji, Baiyang Yan, Haixu East China Univ Sci & Technol Shanghai 200237 Peoples R China Sunyard Sys Engn Co Ltd Hangzhou 310053 Peoples R China

ISBN: (纸本)9783037855799

RFID anti-collision technology is one of a key technology in RFID application system. anti-collision algorithms for RFID systems include tag anti-collision algorithms and reader anti-collision algorithms. This paper focused on the impoved binary algorithm and dynamic binary algorithm. An improved algorithm has been proposed, in which the collision bits was put into the stack and they were used as the reader's request. Based on this mechanism, a novel binary stack algorithm has been proposed. Its simulation was given to analyze the performance of this algorithm. The simulation results showed that the amount of transmitted data in proposed algorithm was obviously less than those in the other two traditional algorithms with the number of tags and their bytes increasing. Consequently, the performance of the proposed algorithm is much better than that of the traditional anti-collision binary algorithm.

关键词： RFID anti-collision algorithm binary algorithm dynamic binary algorithm stack

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Review of Studies of Tag anti-collision algorithm in RFID

Review of Studies of Tag Anti-collision Algorithm in RFID

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International Conference on Wireless Networks and Information Systems

作者： Feng Shuo Gao Fei Xue Yanming Li Heng Beijing Inst Technol Sch Informat & Elect Beijing 100081 Peoples R China

ISBN: (纸本)9780769539010

With the application of radio frequency identification (RFID) technology in many new areas, its anti-collision problem becomes more obvious each day. This paper introduces the progress of the study in RFID tag anti-collision algorithm, analyzes two major categories of anti-collision algorithms, points out the advantages and disadvantages of these algorithms, and proposes improvements for them.

关键词： RFID anti-collision algorithm ALOHA binary tree search

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