• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2016.10a
• /
• pp.256-259
• /
• 2016

The growth of mobile devices in Internet of Things (IoT) leads to a number of intelligent buildings related IoT applications. For instance, home automation controlling system uses client system such web apps on smartphone or web service to access the home server by sending control commands. The home server receives the command, then controls for instance the light system. The gateway based RESTful technology responsible for handling clients' requests attests an internet latency in case a large number of clients' requests submit toward the gateway increases. In this paper, we propose the design tasks of the IoT gateway for handling concurrency events. In the procedure of designing tasks, concurrency is best understood by employing multiple levels of abstraction. The way that is eminently to accomplish concurrency is to build an object-oriented environment with support for messages passing between concurrent objects. We also investigate the performance of event-driven architecture for building IoT gateway using node.js on one side and communication protocol based message-oriented middleware known as XMPP to handle communications of intelligent building control devices connected to the gateway through a centralized hub. The Node.JS is 40% faster than the traditional web server side features thread-based approach. The use of Node.js server-side handles a large number of clients' requests, then therefore, reduces delay in performing predefined actions automatically in intelligent building IoT environment.

• KIPS Transactions on Computer and Communication Systems
• /
• v.12 no.9
• /
• pp.283-290
• /
• 2023

With the recent steady development of IoT technology, it is widely used in medical systems and smart TV watches. 66% of software development is developed through language C, which is vulnerable to memory attacks, and acts as a threat to IoT devices using language C. A stack-smashing overflow attack inserts a value larger than the user-defined buffer size, overwriting the area where the return address is stored, preventing the program from operating normally. IoT devices with low memory capacity are vulnerable to stack smashing overflow attacks. In addition, if the existing vaccine program is applied as it is, the IoT device will not operate normally. In order to defend against stack smashing overflow attacks on IoT devices, we used canaries among several detection methods to set conditions with random values, checksum, and DSLR (random storage locations), respectively. Two canaries were placed within the buffer, one in front of the return address, which is the end of the buffer, and the other was stored in a random location in-buffer. This makes it difficult for an attacker to guess the location of a canary stored in a fixed location by storing the canary in a random location because it is easy for an attacker to predict its location. After executing the detection program, after a stack smashing overflow attack occurs, if each condition is satisfied, the program is terminated. The set conditions were combined to create a number of eight cases and tested. Through this, it was found that it is more efficient to use a detection method using DSLR than a detection method using multiple conditions for IoT devices.

• Smart Media Journal
• /
• v.10 no.2
• /
• pp.92-99
• /
• 2021

Smart space is a technology that supports humans by interacting with the surrounding environment. Smart space has a built-in dynamic intelligent environment. This paper proposes a framework that provides user-customized dynamic intelligent environments in smart spaces. In the existing research that provides user-customized intelligent services, users' interests are only explicitly analyzed, and smart spaces are not considered. Implicit interest analysis can suggest a service that may be of interest to users rather than explicit interest analysis, but it requires higher performance than explicit interest analysis. Smart spaces can obtain useful information by interacting with information in the space. The framework proposed in the study uses a proximity-based social network of things to fit into a smart space. In addition, the implicit interest analysis provides intelligent information for smart spaces using the social media information and spatial information objects. In addition, we propose a method to prevent performance degradation while maintaining accuracy in consideration of the characteristics of the smart space.

• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
• /
• v.7 no.2
• /
• pp.199-208
• /
• 2017

IoT, Cloud, Bigdata, Mobile, AI, and 3D print, which are called as the main axis of the 4th Industrial Revolution, can be predicted to be changed when the technology is applied to the military. Especially, when I think about the purpose of battle, I think that IoT, Cloud, Bigdata, Mobile, and AI will play many role. Therefore, in this paper, Smart Military is defined as the future military that incorporates these five technologies, and the architecture is established and the appropriate information security model is studied. For this purpose, we studied the existing literature related to IoT, Cloud, Bigdata, Mobile, and AI and found common elements and presented the architecture accordingly. The proposed architecture is divided into strategic information security and tactical information security in the Smart Military environment. In the case of vulnerability, the information security is divided into strategic information security and tactical information security. If a protection system is established, it is expected that the optimum information protection can be constructed within an effective budget range.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2017.11a
• /
• pp.562-565
• /
• 2017

본 연구는 일상에서 길을 찾는 데 어려움을 겪은 보행자나 초행길을 낯선 여행자들을 대상으로, 스마트폰과 더불어 사람들이 많이 지니고 다니는 가방을 가지고 적용하였다. 스마트폰의 LBS, 블루투스 기능과 가방에 부착된 진동 인터페이스가 연결되어 실시간 경로 안내를 받을 수 있는 제품이다. 부가적인 기능으로는 앱 상에 회원관리 기능이 있어 개인의 이용 기록에 관한 데이터가 DB에 저장되며 DBMS를 통한 데이터 분석으로 사용자에게 맞춤화된 서비스를 제공해 줄 수 있다. 또한 여러 사용자들이 이용한 플랫폼에 쌓인 데이터를 가지고 새로운 비지니스를 창출할 수도 있다. 추가적으로 일정 거리 이상 멀어지면 신호의 강도가 약해지는 블루투스의 특성을 이용하여 이용자가 가방과 일정 거리 이상 떨어질 경우, 스마트폰으로 팝업 창을 띄워주는 형태로 분실 방지 기능을 제공해 줄 수도 있다.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.21 no.6
• /
• pp.1106-1112
• /
• 2017

As the Internet of Things (IOT) is evolving into an industry-wide service and expanded to the concept of Internet of Everything (IoE), services using IoT devices are easily accessible in everyday life. IoT requires more devices to collect information and is expected to increase the number of devices by 50 billion by 2020, and is about the number of devices currently available. Gradually, the number of mobile devices, smart devices, and Internet devices is increasing, and energy resources are required to operate such a large number of Internet devices, and the energy consumed by each device is small. In this paper, we consider the number of devices to be increased and generate a signal irrespective of transmission information so that power other than the energy required for signal transmission is consumed. When transmission information is generated and near to a receiver to receive information, The method to be used as an analysis is designed through experiments.

• Information and Communications Magazine
• /
• v.32 no.5
• /
• pp.36-41
• /
• 2015

스마트 팩토리는 시시각각 변화하는 생산현장의 생산정보 4M1E(Man, Machine, Material, Method, Energy)생산 자원을 실시간으로 통합하여 생산 관리를 무대기시간, 무재고, 무고장, 무불량일 발생할 수 있는 핵심성과지표(KPI: Key Performance Indication)를 통하여 생산현장을 연속개선을 추진하는 것이 핵심이다. 본고에서는 스마트 제조업에 필요한 IT융합 국제표준화 동향으로 사이버 보안기술, Object Process Methodology기반 생산자원 통합기술, 실시간 이벤트기반 구조화 기술, 공통 생산정보화 플랫폼 서비스기술, 생산정보화 표준기능 및 국제표준동향과 한국형 중소제조업 스마트공장 적용 참조 모델에 대하여 알아본다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2017.04a
• /
• pp.1123-1125
• /
• 2017

ICT 기술의 발달과 농촌의 고령화로 인한 사회적 문제(노동력 부족)를 해결하기 위하여 스마트팜(Smart-Farm) 상품이 많이 운용되고 있다. 하지만, 대부분의 스마트팜 솔루션은 통신기술을 기반으로 개발 및 상품화되었다. 따라서, 시설재배 농가의 요구사항(일관된 생산품질 유지 및 돌발상황 대처 등)이 반영된 스마트팜 상품을 개발하기 위한 제품과는 거리가 멀다. 본 연구에서는 IoT 플랫폼 기반의 시설재배용 스마트 관제시스템 최적화 모델을 개발을 위한 설계 결과를 제시하고자 한다.

• The Journal of the Korea Contents Association
• /
• v.16 no.5
• /
• pp.1-12
• /
• 2016

Internet of Things (IoTs) technologies have been computerized information generated from a variety of objects and humans, and have been applied to various fields by connecting via the Internet. In order to compensate for the marginal characteristics of IoT smart devices, such as low-power, limited processing and capacities, combining IoT and cloud computing technologies is now established itself as one of the paradigms. In this paper, we look at the definition, features and services of IoT and cloud computing technology, and we investigate and analyze the conversing needs of IoT and could computing, existing conversion paradigms, convergence cases, and platforms. In results, there are challenges to be solved, even though the cloud technologies complement a number of restrictions of IoT and offer various advantages such as scalability, interoperability, reliability, efficiency, availability, security, ease of access, ease of use, and reduced cost of deployment. We analyze the new research issues of convergence paradigm, and finally suggest a research challenges for convergence.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2017.05a
• /
• pp.258-259
• /
• 2017

Recently, as science and technology is very growing, wire and wireless communication is merged and interconnected. Therefore, advanced internet technology allow all kinds of communication to integrate with heterogeneous device and sensors. The representative example is smart home network based on internet of things. Communication surroundings under IoT services are more complex. Conventional encryption techniques can't provide to IoT application because of its limited resources such as small memory capacity and low computing power. In this paper, we analyzed authentication procedure between home gateway and node in sensor under smart home network.