• 한국통신학회논문지
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• 제33권4A호
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• pp.411-417
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• 2008

본 논문에서는 multi-hop 블루투스 스캐터넷을 형성하는 BSFP (Bluetooth Scatternet Formation Protocol)을 제안한다. BSFP는 각각의 블루투스 기기에서 독립적으로 수행되고, 초기단계에서 주변 기기들에 대한 정보를 요구하지 않으며, 모든 기기들이 블루투스의 통신 가능 범위 안에 위치하지 않아도 스캐터넷을 형성할 수 있다. BSFP는 1) 자신의 주위에 어떤 노드들이 있는지를 찾는 Init 단계, 2) 각각의 노드가 국부적 정보만을 가지고 스캐터넷을 형성하는 Ready 단계, 3) 연결된 링크를 이용하여 통신을 하는 Complete 단계로 구성된다. BSFP에서는 스캐터넷 형성을 완료할 때까지 걸리는 실행시간이 기기들의 수가 늘어나도 크게 변하지 않으며, 인접 기기들 간의 통신 링크의 수가 많은 스캐터넷을 형성하여 신뢰도 높은 mobile ad hoc network을 구성할 수 있도록 해 준다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 학술대회 논문집 정보 및 제어부문
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• pp.337-339
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• 2005

The demand for a real-time image surveillance system using network camera server is increasing as the network infra has been grown and digital video compression techniques have been developed. The image surveillance system using network camera server has several merits compared to existing real-time image surveillance system using CCTV. It would be more convenient if wireless realtime image transmission were possible. In this paper, a bluetooth module is designed and implemented for a real-time image surveillance system to send and receive informations wirelessly. It may simplify the system development procedures and increase the productivity by low power consumption, low cost, and simple wireless installation. A scatter-net formation is proposed using dynamic and distributed algorithm so that the network connection is reliable.

• 제어로봇시스템학회논문지
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• 제10권11호
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• pp.1052-1057
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• 2004

Bluetooth technology is essentially a method for wireless connectivity of a diverse set of devices ranging from PDAs, mobile phone, notebook computers, to another equipments, The bluetooth system both point-to point connection and point-to multipoint connection. In point-to multipoint connection, the channel is shared among several bluetooth devices. Two or more devices sharing the same channel form a piconet. There one master device and up to seven active slave devices in a piconet. The radio operates in the unlicensed 2.45GHz ISM band. This allows users who travel world-wide to use bluetooth equipments anywhere. Since the link is based on frequency-hop spread spectrum, multiple channels can exist at the same time. The bluetooth standard ha s been suggested that bluetooth equipments can be used in the short-range, maximum 100 meters. It has been defined that the time takes to setup and establish a bluetooth connection among devices is 10 seconds. It is a long time and may be a cause to lose a chance of finding other non-fixed devices. We propose a routing protocols for scatternets which can be used to control a mobile units(MUs) in this network. The proposed routing protocol is composed of two kinds of bluetooth information, access point(AP) and MU.

• 한국정밀공학회지
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• 제21권10호
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• pp.86-93
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• 2004

This paper presents the remote measurement of the ECU signals adopted with KWP 2000 protocol using the wireless communication technique of bluetooth. The bluetooth technology will be the most promising network paradigm which can open the new area in the information technology. Especially, bluetooth module is able to link all the electrical products and personal computers to cellular phone or PDA. This research has a try to design a wireless measurement model of ECU signal based on the car telemery system using bluetooth device. In order to measure the ECU signals, we designed the interface circuits which is able to communicate between the ECU system and the terminal circuits according to the ISO, SAE regulation of communication protocol standard. A microprocessor S3c341 OX is used for the system control and communication of ECU signals. The embedded system software is programmed to measure the ECU signals using the ARM compiler and ANCI C based on Micro/OS-II kernel to communicate between two bluetooth modules using bluetooth stack. The remote measurement of ECU signals using the bluetooth was designed and implemented to evaluate the performance of wireless network to the transmit measurement data. The possibility for the remote measurement of the self diagnosis signals of ECU adopted with KWP2000 protocol verified through the developed systems and algorithms in embedded system.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2004년도 춘계학술발표대회
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• pp.1501-1504
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• 2004

We describe a Bluetooth wireless sensor network for security systems, which includes the implementation issues about system architecture, power management, self-configuration of network, and routing. We think that the methods or algorithms described in this paper can be easily applied to other embedded Bluetooth applications for wireless networks.

• 융합보안논문지
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• 제16권6_2호
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• pp.99-107
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• 2016

이 연구의 목적은 Bluetooth를 활용한 자동차의 내부망 통신네트워크를 해킹공격으로부터 예방하기 위한 대응방안을 제시하기 위함이다. 이를 위해 2장에서는 자동차 통신네트워크의 정의와 내부망 통신네트워크의 종류에 대해서 살펴보았다. 3장에서는 자동차 내부망 통신네트워크 해킹위험성을 분석하기 위해 Bluetooth에 의한 해킹범죄사례를 살펴보았다. 4장에서는 본 연구의 결과로서 첫째, "자동차안전기준에 관한 규칙" 개정이 이루어져야 한다. 동법에서는 전자제어시스템의 정의 및 기준사항과 안전운행을 위한 제작 및 정비를 규정해 놓았음에도 불구하고 전자제어시스템을 대상으로 한 해킹범죄 예방 및 방어와 관련된 보안프로그램 혹은 펌웨어 등의 제작과 관련된 규정이 없는 실정이다. 둘째, 자동차의 전자제어시스템 기술의 복잡성에 기인된 자동차 통신네트워크를 보호하고자 자동차 통신네트워크 보호 법률이 신설되어야 한다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.778-781
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• 2005

In this paper, we describe a development of a Bluetooth Access Point for the WAN connection of home network devices. Especially, users can access the PSTN at home instead of expensive digital cellular network through the AP, using the 'one-phone', which is the Bluetooth enabled cellular phone. The simultaneous benchmark test about telephone service and LAN access service shows the perfect compatibility and reasonable performance of the access point. The one-phone service can become a convergence of wired and wireless communication through the AP.

• TTA 저널
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• 통권75호
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• pp.36-42
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• 2001

''Cable Replacement'' 개념으로 시작된 Bluetooth 기술은 많은 장점을 가지고 있으며, 이를 이용한 다양한 Business model이 개발 중에 있다. 이런 Bluetooth 기술은 이동통신 사업자에게는 기회와 위협요인을 모두 지니고 있다. 본고에서는 실제 SK텔레콤에서 개발한 Bluetooth 서비스 기능을 중심으로 설명하고 이동통신 서비스에 적합한 Bluetooth 사업 모델에 대해 언급한다. 현재 개발된 Bluetooth 응용 profile들은 셀룰라폰을 중심으로PAn(Personal Area Network)을 구성하고 다양한 종류의 디바이스기기에서 접속하는 것을 시험하였다. 개발된 응용profile로는 셀룰라폰-노트북간의 Dialup Networking 기능, 셀룰라폰-키보드간의 무선입력 기능 등이다. 이런 기능들을 바탕으로 무선데이터 시장은 더욱 활성화될 것으로 전망되며 기타 유용한 응용분야도 가능하다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2003년도 ICCAS
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• pp.2408-2412
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• 2003

Recently the idea of a home automation has been an important issue in many publications and home appliances companies. Home automation is a house or living environment that contains the technology to allow devices and systems to be controlled automatically. Remote and local control are useful to keep home comfortable and to support the elderly and the disabled people. In this paper, we discuss possible developments of Bluetooth wireless technologies and describe the hardware for devices and software for the considerations of a home automation system. Finally, we have validated the testbed by simulating in the Bluetooth home network.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 학술대회 논문집 정보 및 제어부문
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• pp.448-450
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• 2005

A ubiquitous network allows all users to access and exchange information of any kind freely at any time, from anywhere, and from any appliance through the use of broadband and mobile access. Bluetooth commincation can provide the missing wireless extension to the heterogeneous network, allowing a more ubiquitous access. In this point of view, the BT specifications define ways for which each BT device can set up multiple connections with neighboring devices to communicate in a multi-hop fashion. this paper provides insights on the Bluetooth technology and on some limitations of the scatternet formations. so that, we describe a new multi-hop routing protocol for the establishment of scatternets. this protocol defines rules for forming a multi-hop topology in two phases. the first phase, topology discovery, concerns the discovery of the node's depth from a root node initiating inquiry process. the second phase forms scatternet topology based on the result of topology discovery.