• Journal of Korea Society of Digital Industry and Information Management
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• v.4 no.4
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• pp.9-19
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• 2008

In this paper, it is studied anti-collision algorithm based on the transmission protocol for RFID baseband system of the lSO/IEC 18000-6 Type-C regulation and designed the baseband part of RFID reader system using FPGA. To compensate this weak point of the slot random aloha algorithm which must have a long time to be dumped before deciding an appropriate slot size according to the number of surrounding tag, we suggested how to apply Bit By Bit algorithm to be able to recognize the tag when the tag is clashing. The design of the baseband part in the RFID reader system is accomplish by use of the ISE9.1i and I made an experiment on it targeting Spartan2. Construction verification is measured each block through Logic Analyzer and I can verify it has no error. I also compared and analyzed the performance between proposed algorithm and past algorithm and verified the improvement of performance.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.11
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• pp.6815-6820
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• 2014

The creation of a RFID/USN environment has increased rapidly due to the activation of ubiquitous security environment suitable for RFID/USN environment but has failed to comply with the speed of security threats. Therefore, this thesis presents MSNR suitable for RFID/USN. The MSNR presented showed an increase in the processing rate of 1.3 times compared to the existing AES and showed 2 fold improvement in performance in terms of the overall system efficiency. Therefore, MSNR is considered to be a password algorithm suitable to overcome the conditions of environmental resource conditions, such as RFID/USN.

• The Journal of Information Systems
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• v.16 no.2
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• pp.93-122
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• 2007

RFID has fundamental influences on today's business management. This research seeks to formulate the opportunities and challenges, the strengths and weaknesses and the perceived benefits of RFID implementation in three industries: manufacturing, medical-service, and distribution. Ten companies of successful RFID deployment in Korea are presented. Field interview and panel discussion were used to explore the research purpose. The core challenges include RFID readability issues, lack of best practices, increasing prime cost, visible ROI, implementation cost, and employee's resistance. The strengths include IT infrastructure, system integration competency, RFID business model creation ability, executive's support. There is little weakness in Korea companies, there are many perceived benefits in three industries. The most distinctive finding is that the visible ROI was found out in the manufacturing industry, not in the distribution industry. The opportunities and challenges, the strengths and weaknesses and the perceived benefits are some different in three industries, which provide valuable guidance for Korean companies in seeking the RFID opportunities. This case study represents a pioneer research of RFID adoption in Korea.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.25 no.1
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• pp.83-91
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• 2014

The passive UHF RFID tags for item-level tagging are now explosively used in the supply chain and retail applications as they have several advantages, the two most relevant are cost and a longer read range. However, the signal interference problem between RFID tags and smart devices in real world is expected according to the smart-phone and tablet market growth together. The performance of RFID tags can be significantly less. The popular examples are the read-success rates and read range reduction. Especially, KT Corp. recently emphasized the serious signal interference at 900 MHz of LTE and old RFID frequencies through their public demonstration. By popular demands, this paper suggests the interference tolerance measurement method between the passive UHF RFID tag and the transmitted signal from a smart device. In addition, we selected three passive UHF RFID tags(Inlay) available on the market and quantitatively evaluated read range reduction results by interference signals using the PCR(Performance Change Rates) index. As a result, the LTE system is about three times as effective as the WCDMA system in terms of interference effects, and the read range performance of two RFID tags about 60 % drop.

• Journal of the Korea Society for Simulation
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• v.16 no.4
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• pp.67-75
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• 2007

Radio Frequency IDentification(RFID) is in the limelight of fields of military, delivery and library management as an alternative or barcode system. However, it is restricted within product manufacturing, sales and delivery. In this paper, we apply RFID technology into process, especially packing process management to gauge RFID applicability. To verify beneficial features of RFID, we simulate RFID-adopted packing process. As a result, we demonstrate the effectiveness of a RFID-based Process Improvement In manufacturing process. The results of performance evaluations demonstrate that the proposed RFID-based Process Improvement reduces the labour time, labour cost and material cost. Furthermore, we analyze the validity of RFID-based Process Improvement by RFID cost.

• The Journal of the Korea Contents Association
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• v.9 no.11
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• pp.74-79
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• 2009

This paper proposes a hardware structure and associated finite state machine designs sharing key scheduling circuitry to enhance the performance of the block cypher algorithm, HIGHT. It also introduces an efficient protocol applicable to RFID systems comprising the HIGHT block cipher algorithm. The new HIGHT structure occupies an area size small enough to accommodate tag applications. The structure yields twice higher performance them conventional HIGHT algorithms. The proposed protocol overcomes the security vulnerability of RFID tags and thereby strengthens the security of personal information.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.36 no.12B
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• pp.1659-1669
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• 2011

In this paper, we discuss design and implementation of intelligent retail store management system through the application of RFID technology to effectively manage retail stores. Firstly, we defined functionality required for system development, designed the system structure, and proposed the service control procedures. Secondly, we implemented the designed system, and then conducted related tests to verify functionality and performance of the system. As a result, we confirmed through functional tests including 129 items that everything was normal behavior, and were able to determine the performance through testing of RFID middleware, RFID readers and tags.

• The Journal of the Korea institute of electronic communication sciences
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• v.6 no.5
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• pp.797-802
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• 2011

RFID is recognized to technically occupy important position in ubiquitous computing environment and expected to create new markets in a variety of fields from now on. In order to generalize RFID system, it is required to solve the problem of privacy invasion and expedite lots of tags We suggest efficient RFID Tag Identification to identify tags quickly on the satisfaction with 3 security requirements of privacy protection in this paper. This methods are transferred to Grid environment through parallel analysis of Hash-Chain, and we measure performance of each nodes under the Grid environment. Then, We'll suggest SP-Division Algorithm to identify tags with each nodes and implement it in a Grid environment.

• Journal of the Korea Institute of Building Construction
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• v.9 no.2
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• pp.47-54
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• 2009

Integrated construction site management using RFID(Radio Frequency Identification) and facility maintenance introducing USN (Ubiquitous Sensor Network) have been widely used in the mega construction project sites. But, the validation on performance of RFID systems after introducing those has not been carried out. Given that the use of RFID systems have been increased, the construction industry as well as other industries needs the evaluation of the RFID system. By regarding the necessities for evaluation, a research to the satisfaction and importance evaluation of RFID system from the end-users' view point for site management was conducted. Satisfaction-importance matrix of satisfaction standards and importance standards was created (organised) according to the analysis result of a survey, proposed improvement methods and analysis about the items presented by each region like areas of sustainable maintenance, maintenance, progressive improvement and priority improvement. The result would contribute to enhance the utilization of system and its performance.

• Journal of Korea Society of Industrial Information Systems
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• v.15 no.3
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• pp.1-9
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• 2010

In recent year, the cores of ubiquitous environment are sensor networks and RFID systems. RFID system transmits the electronic information of the tag to the reader by using RF signal. Collision happens in RFID system when there are many matched tags, and it degrades the tag identification performance. Such a system needs algorithm which is able to arbitrate tag collision. This paper suggests a hybrid method which reduces collision between the tags, and can quickly identify the tag. The proposed method operates based on certainty, which takes an advantage of tree based algorithm, and to reduce collision it selects transmission time slot by using tag ID. The simulation results show the suggested method has higher performance in the number of queries and collision compared to other tree based and hybrid algorithms.