• Proceedings of the Korean Society of Computer Information Conference
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• 2013.01a
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• pp.231-232
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• 2013

현대사회는 기술의 발전으로 우리가 의식하지 않아도 모든 사물과 사람이 통신을 하는 시대로 바뀌고 있다. 이런 기술을 Internet of things 줄여서 IoT라고 부른다. IoT기술의 핵심은 인간의 개입 없이 모든 사물들이 상호 협력적으로 센싱, 정보 처리 등을 수행한다는 점이다. 본 논문은 IoT기술의 지속적인 발전과 함께 기술의 실현을 위해서 필요한 시스템을 제안한다.

• TTA Journal
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• s.156
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• pp.67-71
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• 2014

• TTA Journal
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• s.166
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• pp.30-35
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• 2016

• TTA Journal
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• s.166
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• pp.6-11
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• 2016

• TTA Journal
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• s.166
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• pp.36-40
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• 2016

• TTA Journal
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• s.155
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• pp.22-27
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• 2014

• TTA Journal
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• s.155
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• pp.45-51
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• 2014

• TTA Journal
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• s.155
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• pp.52-56
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• 2014

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.05a
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• pp.57-58
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• 2018

As interest in the Internet of Things increases, technologies are being studied to handle information exchanged between things using the Internet of Things. Specially, as container terminals are automated, the use of the Internet of Things in the terminals increases and varies. However, the use of the Internet of Things to enhance the efficiency of the container terminal operation is insufficient. Currently, the container terminal shows that the arrival pattern of the external truck is concentrated at a particular time. This resuls in gate congestion and affects the waiting times of the truck. The damage is caused by environmental pollution problems and social problems in neighboring port areas. Therefore, in this thesis, we will analyze the causes of the external truck's waiting time problems affecting the gate congestion at container terminals and study methods to mitigate congestion under Internet of Things environment.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.11 no.6
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• pp.778-783
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• 2018

With the rapid advancement of information and communication technology and industrial technologies, a hyper-connected society is being realized to connect human beings, all programs and things via the Internet. IoT (Internet of Thing), which connects a thing and another thing, and things and human beings, gathers information to realize the hyper-connected society. MQTT (Message Queuing Telemetry Transport) is a push-technology-based light message transmission protocol that was developed to be optimized to the limited communication environment such as IoT. In pursuing the hyper-connected society, IoT's sensor environment information is now being used as a wide range of information on people's diseases and health management. Thus, security problems of such MQTT include not only the leak of environmental information but also the personal information infringement. To resolve such MQTT security problems, we have designed a new security MQTT communication by applying the initial-value sensitivity and pseudorandomness of the chaotic system to the integrity and confidentiality. The encryption method using our proposed chaotic system offers a simple structure and a small amount of calculation, and it is deemed to be suitable to the limited communication environment such as IoT.