• Journal of KIISE:Information Networking
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• v.30 no.2
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• pp.222-232
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• 2003

In accordance with the changes in the wireless communication environment, there has been a great need to satisfy the demand for diverse modes of information exchange. Various types of short-distance wireless communication technology have been developed and studied to meet this demand. Among them, Bluetooth which has recently been acclaimed as the standard for short-distance wireless communication, has been the focus of many such studies. However, Bluetooth has weaknesses in its suuity features when its in security services are applied to Home networks. The purpose of this study is to propose a safe Bluetooth scenario with an upgraded suity feature. This paper first reviews the general characteristics and security features of Bluetooth together with an analysis of its weaknesses, and presents the formation and maintenance process of Bluetooth piconet what is created by using ECDSA and group key in the ACL(Asynchronous Connection-less Link) connection through a safe Bluetooth inquiry process.

• The Proceeding of the Korean Institute of Electromagnetic Engineering and Science
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• v.12 no.4
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• pp.3-12
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• 2001

Bluetooth stands for a technical specification for radio communication or a radio equipment that uses the Bluetooth specification of which the main purpose is to substitute the complicated communication cable of the informative device or electronic apparatus used at home or industrial fields, and was expected to be a mastermind of revolution in the short range radio communication. But the Bluetooth has recently been led to the mobile communication field which is somewhat apart from the primary purpose of Bluetooth and occur the question on its effectiveness. This paper review the situation of Bluetooth in the aspect of radio technical criteria and propose the direction for improvement of regulatory basis considering the prospection of the technical development of Bluetooth.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.29 no.2
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• pp.1-7
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• 2015

The Light Emitting Diode(LED) lighting control system proposed in this thesis is made up of a sensor module, a microcontroller, Bluetooth wireless communication, LED Driver, and LED downlight. The sensor module, comprised of an infrared sensor, an illumination sensor, and a temperature sensor, was designed to one Printed Circuit board(PCB). The system is able to identify the environment information collected by the sensor, and make it possible to control lighting automatically and manually through sensors. In addition, depending on users' conditions, a color temperature can be controlled. CS-1000, a spectroradiometer, was employed to measure the changing values of a color temperature in 8 steps. According to a test, it was found that it was possible to change a color temperature from 3187K of Warm White LED to 5598K of Cool White LED. The Bluetooth based wireless communication technique makes it possible to control more lighting devices than other wireless communication techniques does.

• Convergence Security Journal
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• v.17 no.4
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• pp.3-9
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• 2017

Recently, Wireless communication has been widely used as a short distance communication medium in various industrial fields as well as communication connection between home appliances due to the appearance of the Internet of Things. And Most commonly used wireless communication media include WiFi, Bluetooth, and NFC. Among them, Bluetooth is widely used for communication between smart devices as well as computer peripheral devices. And Bluetooth in the home network fields is being used to control electronic products. However, since Bluetooth security vulnerabilities are known, more and more attacks are being exploited. As the application range of Bluetooth is expanding, it is necessary to prepare countermeasures accordingly. Therefore, this study investigates the security threat factors of through Bluetooth'attack case and attack technology. And By proposing countermeasures against this problem, we intend to utilize it as data for improving the security of wireless network service in the future.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.9
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• pp.1921-1927
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• 2009

In this paper, a point-to-multipoint wireless communication system based on Bluetooth specifications, which is possibly applied to very large vessels, is implemented and analyzed. Here, a communication network is composed of a slave Bluetooth module connected to the task computer and multiple master Bluetooth modules equipped with a sensor. And exploiting the point-to-multipoint data communication among the Bluetooth modules, a surveillance system that recognizes and controls a variety of emergency situations happened on a large vessel is implemented. It is, therefore, considered that the wireless communication system implemented in this paper is possibly exploited a basic technology for the digital shipbuilding of the next generation.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.9 no.5
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• pp.39-44
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• 2009

In this paper, we propose and develop software controllable mobile controller contents using bluetooth concepts. The main features of the propsed system are as follows. Bluetooth communication is used for between smart phone and bluetooth. We develop two kinds of programs, clients and server, in which clients requests bluetooth communication and server responds. It's controllable to move toward the previous page and next page, and GUI environments can give efficient user oriented services. The results of performance evaluation show relatively good performances in view points of prices, functions, and portability.

• The Journal of the Korea Contents Association
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• v.4 no.1
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• pp.1-7
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• 2004

In addition to wired communication technology, wireless communication technology has been driving communication revolution nowadays. Bluetooth technology carries out data/voice communication making pico-net and the various application services are supported by access network connected to public network. This paper presents educational software development of bluetooth protocol stack including HCI, L2CAP, RFCOMM, SDP and profiles including GAP, SPP, GEOP, FTP. This software which supports programming environment of these protocol monitoring and emulation is implemented basically step by step for education based on H connected to the bluetooth device through RS-232-C, UART or USB cable. Application program coded by Visual C is operated over the firmware loaded on the bluetooth device connected to the PC. Additionally ftp and chatting function are developed to enhance educational efficiency.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.05a
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• pp.1259-1263
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• 2007

Wireless LAN 외에도 무선 전송 기술은 종류는 다양하지만 비교적 인지도 및 사용성이 낮아 평범한 사용자들에게 친숙하지 않았고 따라서 호환성과 친밀감이 다소 결여된 면이 있다. 그러나 저전력을 소모해야 하는 일반적인 Embedded System 에 적용되는 무선 전송 기술로서 Wireless LAN 보다는 Bluetooth 와 같은 무선 통신 규약이 적용될 필요가 있다. 이에 대하여 Bluetooth 의 OPP(Object Push Profile)는 다른 Bluetooth Profile 에 비하여 가볍고 또한 사용이 어렵지 않으므로, 빠르게 진보하고 있는 무선 전송 기술의 적용 사례 중 하나로서 Bluetooth 의 OPP 를 적용한 Embedded System 을 구현하고, Bluetooth USB Dongle 와 Embedded System 간의 다리 역할을 하는 HCI(Host Controller Interface) layer 에서의 속도의 제약을 가져오는 요인을 개선하는 새로운 알고리즘을 제시하고자 한다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.11 no.6
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• pp.163-168
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• 2011

In this paper, we propose an emotion transfer system based on LED, which presents and transmitts users emotion through Bluetooth and ZigBee using LED light. We propose an emotional LED system interacting multiple LED lighting system and implement the proposed system using smartphone and WPAN network with Bluetooth and ZigBee. For the transmission of data, ZigBee is adopted for each LED lighting system and Bluetooth is utilized for the smartphone. Also, the LED lighting systems which are connected to smartphone have both ZigBee and Bluetooth module for the heterogeneous network. The implemented system shows the validity and applicability of the proposed system.

• Proceedings of the IEEK Conference
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• 2002.07b
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• pp.844-847
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• 2002

In this paper, a location system with Biuetooth is proposed. By using this system we can look up the position of the Bluetooth terminal in a room. In addition, the range of retrieval is accurate because the communication range of the Bluetooth terminal is about l0m radius. The position of the terminal can be always grasped so that the system is available for the security service, the positional infomation service and tracking service.