• Proceedings of the Korean Society of Computer Information Conference
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• 2019.07a
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• pp.147-148
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• 2019

최근 국민의 건강증진 및 질병관리 등에 대한 관심이 증가하면서 전문가들 또한 걷기 운동의 유효성을 강조하고 있다. 이에 따라 스마트 헬스케어와 관련된 기기 및 서비스에 대한 개발이 활발히 진행 중이다. 본 논문에서는 GPS와 비콘 센서를 이용한 환경에서 걷기운동과 미니게임 콘텐츠를 융합한 어플리케이션을 설계하고 구현한다. 이 콘텐츠는 특정 지역을 가상의 게임 맵으로 매칭하고 GPS센서와 리얼월드의 비콘을 블루투스 통신으로 인지하도록 하였으며 이를 통해 소모 칼로리 계산, 게임의 클리어 조건 등 핵심 시스템으로 사용한다. 본 연구를 통해 설계, 구현된 게임 콘텐츠는 이용자의 움직임을 정확히 측정할 수 있고 재미와 몰입감을 제공하여 지속적인 운동을 유도함으로써 운동효과가 향상됨을 확인할 수 있었다.

• Journal of the Korea Society of Computer and Information
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• v.25 no.12
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• pp.119-126
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• 2020

In this paper, we design and implement a product information guidance system Based on BLE beacons. This system is designed to provide various functions such as contactless entrance service through mobile ticket, seat guidance service, event push service, content push service, and public service. This system consists of three modules: a beacon recognition module, a server linkage module, and a content transmission module. The beacon recognition module implements a function of transmitting a specific ID of a nearby beacon when a customer with a smartphone approaches the available service area. The server linkage module recognizes the beacon ID value, transfers it to the server, and implements the function to check the location of the server having the ID. The content transmission module implements a function of transmitting event or service information set at a corresponding location to a smartphone. The beacon-based product information guidance system implemented in this paper has the advantage of being able to quickly and easily implement various product information guidance systems.

• Journal of Advanced Navigation Technology
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• v.19 no.6
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• pp.552-557
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• 2015

Recent performed by recognizing a user's location, various services have been tailored focus on short-range wireless communication technology. A beacon in which is attracting attention as next-generation technology. Beacon is a terminal by utilizing the frequency of the non-audible area can not be bluetooth and human sending and receiving terminals and information, Apple recently iBeacon like a low-power Bluetooth (BLE; bluetooth low energy) based beacon showing a tendency to rise into the mainstream there. Services using a beacon is basically installs the terminal in a certain place indoor. It is characterized by providing the user the services to catch the user's position, even automatically take a separate action. Various types of location-based service provided by the target interior space began to attract attention. A variety of location-based services are provided in the interior space in order to be successfully deployed and provide guidance to the interior space, the movement route and the like are essentially required to build various types of information. In this paper, for efficient indoor positioning by varying the signal strength of the beacon in such areas were measured and analyzed.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.18 no.2
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• pp.157-162
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• 2018

Tracking the location of patients in medical facilities is important to guarantee the patients' safety and to improve the service quality. Previous studies related to location tracking systems based on Bluetooth communication need numerous prerequisite information and multiple devices to improve the accuracy. In this paper, we propose a beacon-based space partition scheme that assigns different arrangement patterns of beacons to different spaces and composes groups with the similar value of RSSI to minimize prerequisite information and the number of beacons. The proposed scheme considers a pattern arrangement scheme to minimize intereference between neighbor patterns. We also verified the applicability of our scheme to monitor the patient location by using experimental results.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.07a
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• pp.561-562
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• 2021

시대가 발전함에 따라 무선통신 기술인 사물인터넷이 점차 성장하고 있으며 모바일 중심으로 IT환경이 재편됨에 따라 전자상거래의 결제방식 또한 변화하고 있다. IT시대에 맞춰 개인의 실시간 위치정보를 기반으로 홍보할 수 있는 지능적 마케팅 수단으로 하이브리드 비콘을 활용하여 고객이 매장근처를 지나치거나 방문할 때, 프로모션 및 쿠폰 정보를 전송하여 실시간 마케팅이 가능하게 한다. 하이브리드 비콘은 고주파의 특성상 매장 안팎의 고객 위치를 정교하게 구분 및 제공할 수 있으며, 블루투스의 연결이 끊기더라도 일정시간 동안 마케팅 서비스를 제공하는 강점이 있다. 본 논문에서는 하이브리드 비콘의 고주파와 저전력에 대한 강점을 활용하여 오프라인 매장에서의 고객에게 프로모션 정보나 모바일 적립 서비스를 제공함으로서 오프라인 시장의 마케팅 및 O2O시장 성장을 목표로 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2014.11a
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• pp.268-271
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• 2014

iOS, Android 등의 모바일 운영체제를 탑재한 스마트폰 기술의 급속한 발전으로 인해 다양한 모바일 어플리케이션들이 개발 되고 있다. 그 중에서 모바일을 통해 물품을 관리 하기 위한 기반 기술로 안드로이드의 NFC 기술을 이용하거나 블루투스 바코드 스캐너와 스마트폰의 연계 기술을 이용하고 있는 것이 현재의 추세이다. NFC 기술 또는 단순 블루투스 바코드 스캐너와의 연계만으로는 공간 내 대량의 물품을 지능적으로 관리 하기에는 한계가 있는 것이 사실이다. 본 논문에서는 Beacon 기술을 이용하여 기존의 NFC 기술 및 바코드 스캐너만으로 구현이 불가능했던 문제들을 해결할 방안을 제안한다.

• Journal of the Korea Society of Computer and Information
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• v.27 no.12
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• pp.231-238
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• 2022

In this paper, among short-range wireless communication technologies such as Beacon, Bluetooth, UWB (Ultra-wideband), ZigBee, NFC (Near Field Communication), Z-Wave, 6LoWPAN (IPv6 over Low power WPAN), D2D (Device to Device), etc., proposed an IoT service platform based on a beacon that can provide indoor positioning. And, a beacon-linked web server was designed by blocking indiscriminate beacon spam signals and applying REST web service technology with flexibility and scalability. Data accessibility between different devices was verified by testing the success rate of data transmission, the success rate of blocking beacon push, the success rate of IoT interlocking processing, the accuracy of location positioning, and the success rate of REST web service-based data processing. Through the designed IoT service platform, various proposals and research on short-distance-based business models and service platforms will be conducted in the future.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.19 no.6
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• pp.192-207
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• 2020

In industrial fields like big factories, efficient management of resources is critical in terms of time and expense. So, inefficient management of resources leads to additional costs. Nevertheless, in many cases, there is no proper system to manage resources. This study proposes a system to manage and track large-scale resources efficiently. We attached Bluetooth 5.0-based beacons to our target resources to track them in real time, and by saving their transportation data we can understand flows of resources. Also, we applied a diagonal survey method to estimate the location of beacons so we are able to build an efficient and accurate system. As a result, We achieve 47% more accurate results than traditional trilateration method.

• Journal of Digital Contents Society
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• v.19 no.5
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• pp.963-969
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• 2018

Wi-Fi and Bluetooth technologies are perhaps the most prominent examples of wireless communication technologies used in the Internet of Things (IoT) environment. Compared to widely used Wi-Fi, Bluetooth technology has some flaws including 1:1 connection (one-way) between Master and Slave, slow transmission, and limited connection range; Bluetooth is mainly used for connecting audio devices. Since the release of Bluetooth Low Energy (BLE), some of the flaws of Bluetooth technology have been improved but it still failed to become a competitive alternative of Wi-Fi. This paper presents a method of data transmission through broadcasting in BLE and demonstrates its performance, one-to-many data transfer result. The Connection-Free Data Transmission proposed in this paper will hopefully be utilized in special circumstances requiring 1:N data transmission or disaster security network.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.26 no.6
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• pp.936-942
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• 2022

While indoor vehicle navigation is an essential component in large-scale parking garages of major cities, technical limitations and challenging propagation environments considerably degrade the accuracy of existing localization techniques. This paper proposes a proximity detection scheme using low-cost beacons where a handheld mobile device within a moving vehicle autonomously detects its approximate position and moving direction by only observing Received Signal Strength (RSS) values of beacon signals. The proposed approach essentially exploits the differential RSS technique of multi-directional beams to reduce the impact of the environment, vehicle, and mobile device. A low-cost multi-directional beacon prototype is developed using Bluetooth technology. The localization performance is evaluated using 96 beacons in an underground parking garage within an area of 394.8m×304.3m. Experimental results show that the 90th percentile of the average proximity detection error is 0.8m. Furthermore, our proposed scheme provides robust proximity detection performance with various vehicles and mobile devices.