• The Journal of the Korea Contents Association
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• v.13 no.8
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• pp.20-27
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• 2013

In this paper, we propose a system for an emergency alert broadcasting service that broadcast residents prompt alarms immediately after the disaster occurs in the private sector. The proposed system consists of a contents streamer, n contents distributor, and m television controller under the assumption that the public broadcasting system and the local area network have been already installed. Also, the goal of the system is to forcibly broadcast disaster information to the residents by streaming contents for alerts on their TV. The proposed system in this paper can be utilized in sharing of emergency information in the area as quickly as possible and various information of the area.

• Journal of Broadcast Engineering
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• v.12 no.3
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• pp.230-241
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• 2007

This paper presents the requirements analysis for the Terrestrial DMB Automatic Emergency Alert Service (AEAS) Standard. First, the basic concepts in disaster management and the AEAS system structure are presented as a background. Next, other emergency alert systems and the related standards are analyzed. We propose taxonomy to categorize the emergency alert systems and analyze the characteristics of each system. Next, we analyze advantages of T-DMB for the delivery medium of emergency alert message and problems to resolve for the enhanced performance. Finally, we propose service requirements which will achieve general/special-purpose, non-interrupting, location-adaptive, automatic, message delivery service. The paper will contribute as a guideline to the development for emergency alert service standards for other broadcasting media.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2019.06a
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• pp.204-206
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• 2019

본 논문에서는 미국 재난문자방송 서비스인 WEA의 개선 사항 중 지역맞춤형 서비스를 중점적으로 서술한다. WEA에서 정의하는 지역맞춤 서비스, 이를 위한 미국 연방 규칙에 대해 서술한다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2012.07a
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• pp.145-149
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• 2012

2005년 국내에서 본방송을 실시한 DMB는 모바일 방송이라는 새로운 방송 이용 환경을 창출하였다. 더불어 기존 TV를 통한 재난 방송의 사각지대로 거론되어 온 야외, 정전, 해상, 이동 환경에서 재난정보를 전달할 수 있어 방송 매체로 평가되면서, 다양한 기술 개발이 진행되었다. KBS는 DMB를 통한 재난경보방송 기술을 구현하여 2008년 제주도 지역 실험방송과 2009년 전국 실험방송을 거쳐 2010년 8월부터 본방송을 실시하는 등, DMB 재난경보방송 체계 마련을 위해 노력하여 왔다. 이러한 과정에서 차기 국가 모바일 재난경보 체계 마련의 필요성과 방향성에 대한 경험적 안을 제시해 본다. 본 연구는 급변하는 미디어 환경을 고려하여 모바일 재난 정보 전달체계에서 통신망의 역할을 강화하여 방송과 융합한 모델을 마련하고, 조속히 범국가적 재난정보의 표준 규격을 마련할 것을 촉구하며, 궁극적으로 뉴미디어 도입 정책에서 재난 정보전달에 관한 공공성 정책이 우선되어야 함을 제시하였다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2015.11a
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• pp.129-131
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• 2015

본 논문은 통합경보게이트웨이를 통하여 이기종 예 경보시스템들 간 상호 연계 및 재난 경보를 발령할 수 있는 통합경보시스템(Integrated Emergency Alert System)을 제안한다. 제안한 시스템은 재난 발령 인지를 담당하는 유관기관으로부터 재난 정보를 수집하고 이를 기존의 이기종 경보방송단말간의 연동을 위한 프로토콜로 변환하여 재난 상황 모델에 맞춰 경보 단말로 전달하는 기능을 가진다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2021.06a
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• pp.116-119
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• 2021

국내 이동통신은 4 세대(4G)에서 5 세대(5G)로 전환되는 과정에 있으며 행정안전부는 기존 긴급재난문자 서비스를 5G 망으로 고도화하기 위해 준비하고 있다. 재난문자 길이의 확장, 송출 지역 세분화, 외국어 문자 지원 등을 긴급재난문자 서비스에 포함하기 위해 국내외 표준화와 검증 시스템 구축이 준비되고 있다. 본 논문에서는 해외 사례 분석을 통해 국내 5G 망으로 고도화된 긴급재난문자를 서비스하기 위해 요구되는 검증 요구사항을 정의하고 있다. 이를 기반으로 긴급재난문자 서비스를 검증할 리빙랩이 구축될 예정이다.

• Journal of Broadcast Engineering
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• v.26 no.5
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• pp.592-598
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• 2021

Current cellular systems rely on a CBS protocol for emergency alert broadcast services. However, the CBS protocol just specifies the delivery of a limited text message. Therefore, foreigners, who are unfamiliar with local characters, may have some difficulties in understanding the received CBS text message. The CBS protocol also reveals a distinct restriction in delivering abundant information because of a limited number of text characters. In order to overcome the weak points of the current CBS protocol, we propose a display method of image information and URL on the screens of mobile terminals for the received CBS text message in this paper. The presented approach effectively utilizes the message structure of CBS for 5G cellular systems.

• Journal of Broadcast Engineering
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• v.12 no.6
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• pp.630-640
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• 2007

This paper presents the design of service model, transport channel, and service signaling for the Terrestrial DMB Automatic Emergency Alert Service (AEAS) Standard. The paper begins with the analysis of technical backgrounds related to the design topics. Next, the raper presents the design of service model for the AEAS. Since, unlike the regular T-DMB services, the AEAS is event-driven and common to all services, some problems have been identified to design a service model conforming to the T-DMB standard. So, the paper proposes a new concept, called the common service, and the AEAS is modeled using the common service. Next, in order to decide the transport channel for the alert information, the paper proposes to divide the alert information into the message which contains code/text-based essential information, and the supplemental multimedia information. Then, the paper tries to find the most efficient transport channels. Emergency Warning Service (EWS) which uses FIG 5/2 is selected for the delivery of the message. The paper proposes no constraints on delivery of supplemental information except that it shall use the MSC. Finally, it proposes the service signaling for the common service and transport channel. Due to the problems of conventional signaling using the MCI, it proposes a new signaling method. The paper will contribute as a guideline to the development for emergency alert service standards fur other broadcasting media.

• Journal of Internet Computing and Services
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• v.13 no.4
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• pp.95-102
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• 2012

The development of applications for vehicular ad hoc networks (VANETs) has very specific and clear goals such as providing intellectual safe transport systems. An emergency warning technic for public safety is one of the applications which requires an intelligent broadcast mechanism to transmit warning messages quickly and efficiently against the time restriction. The broadcast storm problem causing several packet collisions and extra delay has to be considered to design a broadcast protocol for VANETs, when multiple nodes attempt transmission simultaneously at the access control layer. In this paper, we propose an early intelligent alert broadcasting (EI-CAST) algorithm to resolve effectively the broadcast storm problem and meet time-critical requirement. The proposed algorithm uses not only the early alert technic on the basis of time to collision (TTC) but also the intelligent broadcasting technic on the basis of fuzzy logic, and the performance of the proposed algorithm was compared and evaluated through simulation with the existing broadcasting algorithms. It was demonstrated that the proposed algorithm shows a vehicle can receive the alert message before a collision and have no packet collision when the distance of alert region is less than 4 km.

• Journal of Broadcast Engineering
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• v.24 no.5
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• pp.726-734
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• 2019

This study investigates the number of news and correlated keywords concerning to Korean Wireless Emergency Alert(KWEA). The news was collected using BIGKinds, a news big data system provided by the Korea Press Foundation. When analyzing the annual published news articles, we investigated the frequency of the news grouped by disaster types, and the frequency of the news distinguishing between the earthquake and non-earthquake disasters, and finally the frequency of correlated keywords concerning to the disasters. We found that the KWEA news totaled 182 in 2016 due to the unprecedented powerful KyongJu earthquake, an increase of 20 times over the previous year. Ever since 2016, the news about the KWEA continued to hit high figures consistently. After the peak in KyongJu earthquake in 2016, the proportion of non-earthquakes had also increased in 2017 and 2018. Next, the keyword correlation analysis showed that the KWEA news gave major coverage to the following entities: The Ministry of the Interior and Safety which operates the KWEA, Korea Meteorological Administration, and the general public.