• The Journal of Korean Institute of Communications and Information Sciences
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• v.39C no.11
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• pp.1050-1067
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• 2014

CAS(Close Air Support) is aircraft attack against hostile targets that are in close proximity to friendly forces. Immediate CAS is the mission that attack unplanned targets, and especially the distribution of suitable aircraft assets makes huge effect on the result of immediate CAS mission. But It is hard to find a previous studies on immediate CAS sortie distribution with aircraft suitability. This study suggests a methodology with aircraft suitability for immediate CAS sortie distribution. The methodology consists of 3 steps. Firstly, we analyze target information for situational awareness. Secondly, we calculate each aircraft's suitability value per each target based on the result of previous analysis. Lastly, we suggest immediate CAS sortie distribution based on the aircraft adoptability value to a decision maker. This methodology will provide not only quantitative analysis, but also decision making of immediate CAS sortie distribution more timely and effectively.

• Journal of IKEEE
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• v.22 no.2
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• pp.375-383
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• 2018

Recently, natural disasters including earthquakes, tsunamis, floods, and snowstorms, in addition to disasters of human origin such as arson, and acts of terror, have caused numerous injuries and fatalities around the world. We propose an area split clustering control method in multi-hop ah-hoc communication to reduce the amount of data traffic by allowing only parent terminals to exchange and share data for the emergency rescue and evacuation support system.

• Proceedings of the Korean Information Science Society Conference
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• 2005.11a
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• pp.202-204
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• 2005

통신 네트워크 발전 추세에 따라 데이터와 음성회선을 통합하고 PSTN을 통한 전화 서비스보다 저렴한 통신비용과 다양한 부가서비스 구현 등의 여러 장점을 가진 VoIP서비스로 전환되고 있다. 하지만 VoIP서비스의 긴급서비스에서 위치식별 대한 문제점이 제기되었다. VoIP는 인터넷망을 이용하으로 부여된 발신전화번호 정보를 송출하지 않아 발신자의 위치 및 해당지역 PSAP의 식별이 불가능하다. 이에 따라 건물 내 LAN 환경에서 VoIP 단말기와 연결하는 실내의 모든 이더넷 포트에 대한 정보를 관리하여 이를 지정된 VoIP 단말기와 연계시킴으로써 위치를 확인하는 방법 등이 제안되었으나 단말기 이동시마다 위치정보를 수정해야 하는 문제가 제기되었다. 따라서 본 논문에서는 VoIP서비스에 서 RFID를 이용하여 발신자 단말기 위치를 식별하는 긴급서비스 지원 모델을 제안하고, 이를 위해 가입자 위치정보 획득 및 관리, 호 라우팅 등에 관한 구체적인 방안을 제시하였다. 그 결과 VoIP 망에서 단말기 이동에 대한 위치 확인 문제도 해결이 가능하다.

• Proceedings of the Korean Information Science Society Conference
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• 2001.10c
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• pp.883-885
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• 2001

Wave Pipelining(WP) 기법을 적용한 가상버스(Virtual Bus) 네트워크 구조는 병렬 컴퓨팅에서 중요한 메시지의 긴급성을 효과적으로 지원한다. 우리는 효율적인 통신을 지원하는 가상버스에 적합하도록 MPI를 설계, 구현(MPI/VBus)하였다. 또한, MPI/Vbus와 디바이스 드라이버가 메시지 큐들을 커털 영역에서 공유하도록 설계함으로써 사용자 레벨 통신(User Level Communication)을 쉽게 구현할 수 있도록 했다.

• The KIPS Transactions:PartC
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• v.15C no.4
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• pp.245-252
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• 2008

An emergency service over Voice over IP (VoIP) network is an essential condition, like the existing telecommunication services. To support for the emergency services, standardization works have been performed. The National Emergency Number Association (NENA) has been developing the framework and procedures for an emergency service for Non-IP based network, rather than protocols. In contrast, the Internet Engineering Task Force (IETF) has been only focused on end-to-end IP-based emergency calls. The NENA architecture is incompatible with the IETF protocols. To solve the problem, we design and implement a SIP-based VoIP emergency system by adopting the NENA architecture and by applying IETF protocols, for both IP-based Pubic Safety Answering Point (PSAP) and PSTN-based PSAP. It is implemented and tested under UNIX environment.

• The Journal of the Korea Contents Association
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• v.19 no.7
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• pp.192-198
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• 2019

We propose an emergency rescue support communication system to quickly rescue passenger ships, such as large cruise ships, when a ship sinks or a disaster such as a fire occurs. A beacon is installed in the inside of the vessel, and the position and the status of the passenger are detected in real time through the Bluetooth communication in the mobile terminal carried by the passenger and transmitted to the server. When an emergency occurs, the server sends information on the passenger to the rescue agency, informs the passenger of the emergency, and guides evacuation. As a result of simulations using the designed system, it was confirmed that the server immediately notifies all terminals when an emergency occurred in more than half of the area. This system, which detects the accident in real time and notifies all terminals in the vessel, unlike the existing system that notifies the position of the accident vessel or simply the position of the passenger in the vessel, will be helpful for the rapid evacuation and rescue of the passenger.

• Journal of Convergence for Information Technology
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• v.11 no.2
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• pp.16-24
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• 2021

This paper introduces a smart aging service that helps the elderly lead a happy old age by actively utilizing IoT and AI technologies for the elderly who are increasing rapidly as they enter the aging society. In particular, we propose a future-oriented, age-friendly well-being support system that breaks away from the existing welfare concept to solve the aging problem but leads to a paradigm shift toward building a vibrant aging society by protecting from emergency and satisfying emotions. By introducing IoT and AI, it judges the life situation and emotional state from the living information of the elderly can respond to emergencies and suggest meetings as a change of mood and give an emotional comfort. Since the proposed system uses artificial intelligence techniques to determine the degree of depression when inputting information such as pulse-rate, dangerous word usage, and external communication, I think it showed the feasibility of the new concept of wellbeing support system that is totally different from conventional wellbeing concept of health-care.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.35 no.9B
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• pp.1305-1313
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• 2010

Last few years, wireless personal area network (WPAN) has been widely researched for various healthcare applications. Due to restriction of device hardware (e.g., energy and memory), we need to design a highly-versatile MAC layer protocol for WBAN (Wireless Body Area Network). In addition, when an emergency occurs to a patient, a priority mechanism is necessitated for a urgent message to get through to the final destination. This paper presents a priority mechanism referred to as hybrid priority MAC for WBAN. Through extensive simulation, we show the proposed MAC protocol can minimize the average packet latency for urgent data. Thus, when patients have an emergency situation, our MAC allows adequate assistance time and medical treatment for patients. The simulation based on NS-2 shows that our Hybrid Priority MAC has the good performance and usability.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.27 no.1
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• pp.62-68
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• 2023

An aerial relay system utilizing an unmanned aerial vehicle(UAV) or drone is addressed for event-driven operations such as temporary communication services for disaster affected area, military and first responder support. UAV relay system (URS) targets to provide a reliable communication service to a remote user equipment or an operator, therefore, a fast UAV placement to guarantee a minimum quality of service(QoS) is important when an operation is requested. Researches on UAV utilization in communication systems mostly target to derive the optimal position of UAV to maximize the performance, however, fast deployment of UAV is much more important than optimal placement under emergency situations. To this end, this paper derives the feasible area for UAV placement, investigates the effect of performance requirements on that area, and suggests UAV placement to certainly guarantee the performance requirements. Simulation results demonstrate that the feasible area derived in this paper matches that obtained by an exhaustive search.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.5 no.1
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• pp.227-231
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• 2001

In this paper recently catastrophic oil spills from tanker casualties have polluted the marine environment. The Sea Prince casualties are analyzed and the systems to be introduced are considered. Also, the establishment of the national contingency plan and the decision-making procedure based on technical analysis are described. Based on the discussions the Rapid Response Technical Support System is derived for the support of salvage and oil spill removal operation. The System will contribute to the protection of life and assets from the marine casualties and to keeping the clean and safe ocean.