• Electronics and Telecommunications Trends
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• v.38 no.3
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• pp.66-77
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• 2023

Governments intend to use the public warning system to deliver timely and accurate information using accessible communication technologies for protecting the population and reducing damage to life and property. In particular, many countries implement system interworking with smartphones to notify of disasters or emergencies. In Korea, since 2020, due to the influence of the coronavirus disease, frequent emergency text messages led people to turn off related notifications, and complaints for receiving irrelevant messages from nearby warning areas have increased. Therefore, technical improvements for issuing more accurate disaster information to a specific region should be devised through a geography-based emergency disaster message transmission service. We analyze development trends of public warning systems and service cases of geography-based emergency text transmission services in various countries.

• Asian Journal of Innovation and Policy
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• v.1 no.2
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• pp.148-167
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• 2012

This paper analyzes the impact of the change in telecommunication regulation changes including the unification of telecommunication service on network investment. The unification of telecommunication service plays a role of separating behavior regulation from entrance regulation and reducing entrance constraints. Therefore, it is expected that the market spillover effect is high through the improvement of behavior regulation. In addition, the effects of the other regulation changes in the 2010 Telecommunications Business Act revision are analyzed. This paper discusses critical factors affecting the decision making process in respect to the firm level and analyzes the impact path guiding investment and innovation. The key findings are as follows. First, the impact of entrance deregulation depends on the intensity of deregulation. If the intensity is not high, this regulation increases the incentive on investment and innovation. However, if the intensity is high as shown in abolishing of licensing, it affects the incentive negatively. Second, if interconnection regulation focuses on existing facilities or the intensity is not strong, this light handed regulation might increase investment and innovation. However, if interconnection obligation is expanded to the facility not constructed or the facility applying new technology, this regulation might deteriorate investment. Third, price deregulation increases the competition of service but it also increases the business opportunity, which means positive effect on investment. Finally, the paper proposes the guideline for telecommunications policy.

• Proceedings of the IEEK Conference
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• 2004.08c
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• pp.581-584
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• 2004

Currently, there are many subscriber access networks: PSTN, ADSL, Cellular Network, IMT200 and so on. To these service providers that provide above network service, it is important that they authenticate and authorize legal subscribers and account for their usage. At present, There exist the several protocols that Support AAA(Authentication, Authorization and Accounting) service : RADIUS, Diameter, TACACS+. Nowadays, RADIUS has used for AAA service widely. It has been extended to support other access network environment. So, we extend RADIUS to support environment of Mobile IPv6. Mobile IPv6 uses IPsec as a security mechanism, basically. But, IPsec is a heavy security technology for small, portable, mobile device. Especially, it is serious at IKE, the subset of IPsec. IKE is a key distribution protocol that distributes the key to the endpoints of IPsec. In t:lis paper, we extend RADIUS to support environment of Mobile IPv6 and simplify the IKE phase of IPsec by AAA system distributing the keys by using its security communication channel. Namely, we propose the key distribution method for IPsec SA establishment between mobile node and home agent. The suggested method was anticipated to be effective at low-power, low computing deyice. Finally, end users feel the faster authentication.

• Knowledge Management Research
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• v.10 no.2
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• pp.15-33
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• 2009

Telecommunications-broadcasting convergence in the domain of IT is a representative phenomenon that is expected to provide the saturated existing markets with a new source of profit. Especially, T-Commerce combines familiarity of TV and immediacy of the Internet which are expected to cover all the users familiar with each media and expand the existing commercial transactions. Telecommunications-broadcasting convergence in Korea, however, is focusing on technical and regulatory aspects so that research on the real users is not up to the mark yet. This is the most fundamental problem in hampering growth in the corresponding service and market. Thus, we are proposing an adoption model on T-Commerce to rapidly expand the convergence service through understanding the potential users. Perceived utilitarian and hedonic values, perceived interactivity, media substitution and personal innovativeness have been examined as the factors influencing the users' intention to adopt a new convergence service. As a result of empirical analysis, it is verified that perceived utilitarian and hedonic values and personal innovativeness directly influenced the users' intention to adopt whereas perceived interactivity had indirect affect on them. T-Commerce service providers should not only emphasize on the benefit that the older media could not provide the users with, but also provide them with more pleasure and entertaining experience during the course of satisfying the users' needs to distinguish T-Commerce from the other existing media.

• Journal of Communications and Networks
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• v.17 no.3
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• pp.296-305
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• 2015

Coupled schemes between service-oriented architecture (SOA) and Web 2.0 have recently been researched. Web-based content providers and telecommunications company (Telecom) based Internet protocol television (IPTV) providers have struggled against each other to accommodate more three-screen service subscribers. Since the advent of Web 2.0, more abundant reproduced content can be circulated. However, because according to increasing device's resolution and content formats IPTV providers transcode content in advance, network bandwidth, storage and operation costs for content management systems (CMSs) are wasted. In this paper, we present a user centric CMS for open IPTV, which integrates SOA and Web 2.0. Considering content popularity based on a Zipf-like distribution to solve these problems, we analyze the performance between the user centric CMS and the conventional Web syndication system for normalized costs. Based on the user centric CMS, we implement a social Web TV with device-aware function, which can aggregate, transcode, and deploy content over social networking service independently.

• Electronics and Telecommunications Trends
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• v.10 no.3 s.37
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• pp.47-56
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• 1995

통신 산업이 발전함에 따라 고객의 서비스에 대한 요구가 점차 다양해 지고 있다. 그러나 서비스 소프트웨어가 지니고 있는 난해한 구조와, 기존의 서비스 개발 방법이 지나는 시간과 경비 과다 지출이라는 비효율성으로 인하여, 서비스의 신속한 개발과 도입이 늦추어지고 있다. 따라서 고객의 다양한 요구에 신속하게 부응하기 위하여, 서비스 개발환경이라는 개념이 등장하였다. 본 고에서는 서비스 개발 환경의 기본 개념과 서비스 로직 프로그램 생성 방법에 대한 사례를 서술하고, 이들을 비교 분석하였다.

• Proceedings of the CALSEC Conference
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• 2004.02a
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• pp.339-344
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• 2004

인터넷은 그 매체의 특성으로 인하여 새로운 비즈니스 기회를 창출하는 역할을 하고 있다. 본 연구는 기존의 기간통신서비스에 대응하는 새로운 서비스로서, 고객에게 다양한 가치를 제공하는 별정통신서비스를 중심으로 연구하였다. 최근 통신산업에서 번호자원의 중요성에 대한 인식이 높아지고 있지만 아직까지 이 분야에 대한 연구는 부족한 실정이다.(중략)

• Proceedings of the KSRS Conference
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• 2007.10a
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• pp.560-563
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• 2007

In this paper, we analyze the problem with existing telematics contents service systems that have been provided telematics information on a special contents provider. Then, we suggest methods to solve the problems and propose the architecture of TELIC(Telematics Information Center) to implement our methods. We also verify the stability and the accuracy of the suggested architecture through a comparison with an existing service system. With our system, it is possible to develop telematics content application without additional developing the integration method of various contents.

• Electronics and Telecommunications Trends
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• v.8 no.4
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• pp.130-142
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• 1993

본 고에서는 통신의 고속화와 다양한 사용자의 요구사항으로 인하여 트랜스포트 계층에서 현재 발생하고 있는 서비스의 정의와 QoS(Quality of Service) 에 대하여 알아보았다. 그리고 이를 토대로 하여 계속 발전하고 있는 하위계층의 요구 사항과 매우 다양해져 가는 상위계층의 요구 사항을 적극 수용할 수 있는 새로운 서비스와 QoS 를 정의하였다.

• ETRI Journal
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• v.30 no.4
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• pp.565-575
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• 2008

As networks increase and cross-convergence occurs between various types of devices and communications, there is an increasing demand for interoperable service in the business environment and from end users. In this paper, we investigate interoperability issues in the digital rights management (DRM) and present a practical framework to support interoperability in environments with multiple devices. The proposed architecture enables end users to consume digital content on all their devices without awareness of the underlying DRM schemes or technologies. It also enables DRM service providers to achieve interoperability without costly modification of their DRM schemes.