• 한국통신학회논문지
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• 제6권1호
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• pp.9-20
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• 1981

통신부에서 직접 경영하는 공중전기통신사업은 1982년 1월 1일을 기하여 한국전기통신공사가 전단하게 됨에 따라 통신부의 행정조직은 혁신적으로 개정되리라 한다. 체제에, 통신과학을 전정하는 입장에서 우리나라 통신행정의 핵심이 될 전기통신정책과 전파감리의 발전을 위하여 가장 중요한 조직창조와 인사개혁의 양측면을 적극 공론함으로써 그의 방향을 제시하였다. 이 비교연구로서는 공중전기통신사업을 일본전신전화공사에 의한 영업과 우정성에 의한 감리로서 모범적으로 운행하고 있는 일본국의 사례를 택하였으며, 국내외의 관계문헌과 최신의 자료에 의하여 고찰하였다.

• Journal of Information Technology Applications and Management
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• 제22권3호
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• pp.115-128
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• 2015

Although the telecommunications service industry has become a basic infrastructure component of the information and communication technology (ICT) industry, it is now losing its reputation as a cash cow due to achieving a saturation of service subscribers, especially in South Korea. With the exception of improving network speeds, network operators are experiencing difficulties in creating new innovations. Therefore, new innovations for the telecommunications service industry should be identified in conjunction with government policies for industry promotion. To examine the innovative capabilities of a specific industry, innovation system theories were used as a framework for research. However, existing innovation systems are limited with regard to explaining the openness of relationships and user participation which are general properties of the ICT industry. Moreover, as sources of innovative activity, additional values such as financial support and collaboration are more appropriate. This study presents a new innovation system based on innovation values. We analyze the telecommunications service industry and prioritize the importance of telecommunication policies within South Korea. An in-depth interview with experts based on the innovation system framework is conducted first. Next, innovation factors derived from the interview are applied within an analytic hierarchy process (AHP), leading to a prioritization of innovation factors for the telecommunications service industry.

• 한국항해학회지
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• 제19권4호
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• pp.103-121
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• 1995

As Daniel Bell says, that modern society is an information society. In contrast to earlier days, modern society has placed a high value on information and knowledge. Therefore, modern civilization depends largely on information and knowledged, which is the most valuable sources of all intelligence activities. By coordinating a large number of human action, the information creates a powerful social tool. It combines its personnel with its resources and new materials at various level. At the same time, It continually evaluates how well it is performing and tries to adjust itself accordingly in order to achieve social goals. As we shall see, all this allows information to sew the various needs of society. In connection with above mentioned problem consciousness, the study is designed to sew the following purposes. As its title indicates, and perhaps most significant. This study is to review and reinterpret the existing literature on local telecommunication system, networks, and policy direction in order to arrive at a somewhat more general approach to understanding them. In local telecommunications service, the service exploitation and promotion and database development must be accomplished by establishing local telecommunications. If we develop local telecommunications toward the progressing direction, we would dissolve the regional information disparity and could also make the local policy suited for high-intelligence society. It is true of any science that knowledge is never complete. It is also true of a science that knowledge should grow, through systematic reexamination of the body of findings. There are certainly true of this study on the developmental direction for local telecommunication system.

• 정보통신설비학회논문지
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• 제2권2호
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• pp.14-21
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• 2003

우리나라 IT 기업은 1997년 9,000여개였으나 2002년에는 21,000여개 업체로 4년만에 2배 이상의 숫적인 증가를 보였고, 종사자수는 1997년 40만 여명에서 2002년에는 50만 여명으로 증가하였다. 국내 IT 산업의 생산 및 GDP 비중은 1997년 76조원 2002년 190조원으로 증가하였고, IT 분야에 대한 정부지원은 직접적인 자금지원방식과 간접적인 인력양성지원, 기반환경조성 등 다양한 형태로 추진되고 있다. 본 연구에서는 IT 기업에 대한 정부출연사업은 정부의 기업에 대한 직접지원 방식으로 시장원리와 는 무관하게 일종의 보조금 형식으로 지원하고 있는데 정부지원금의 지원 내용과 지원방법 등을 살펴보고 그 개선 전략을 제안한다.

• 한국정보과학회논문지:시스템및이론
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• 제26권11호
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• pp.1333-1343
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• 1999

경성 실시간 시스템의 태스크들은 논리적으로 올바른 결과를 산출해야 하지만 또한 각자의 시간 제한 조건을 만족하여야 한다. 간격제한 스케줄링은 시간 제한 조건이 시간 간격 제한으로 주어지는 실시간 태스크들을 스케줄하기 위하여 도입되었다. 간격제한 스케줄링에서의 각 태스크들은 시간 간격 제한 조건을 갖는데, 이것은 태스크의 두 연속적인 수행의 종료시간에 대해 제한을 가한다. 다시 말해, 간격제한 스케줄링에서의 각 태스크 수행은 그 태스크의 직전 수행 완료 시간으로부터 발생하는 데드라인을 갖는다. 간격제한 태스크 스케줄링에 관한 많은 연구는 단순화 방법에 기초하고 있다. 그러나, 우리는 이 논문에서 단순화 방법을 사용하지 않고, 정적 우선순위 및 정적 분리 제한 정책을 채용한 새로운 간격제한 태스크 스케줄링 방법을 제안한다. 제안된 정적 할당 방법은 스케줄링 분석 및 구현을 매우 간단히 할 수 있으며, 또한 스케줄러의 실행시간 오버헤드를 줄일 수 있다.Abstract Tasks in hard real-time systems must not only be logically correct but also meet their timing constraints. The distance-constrained scheduling has been introduced to schedule real-time tasks whose timing constraints are characterized by temporal distance constraints. Each task in the distance-constrained scheduling has a temporal distance constraint which imposes restriction on the finishing times of two consecutive executions of the task. Thus, each execution of a task in the distance-constrained scheduling has a deadline relative to the finishing time of the previous execution of the task.Much work on the distance-constrained task scheduling has been based on the reduction technique. In this paper, we propose a new scheme for the distance-constrained task scheduling which does not use the reduction technique but adopts static priority and static separation constraint assignment policy. We show that our static assignment approach can simplify the scheduling analysis and its implementation, and can also reduce the run-time overhead of the scheduler.

• 한국통신학회논문지
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• 제31권12B호
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• pp.1099-1111
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• 2006

최근 국내 주요 이동통신사들이 W-CDMA R5(HSDPA)망을 본격 상용화함에 따라, 이에 알맞은 새로운 3G 이동통신 접속료 산정방안의 조속한 도입에 대한 필요성이 제기되고 있으나, 이에 대한 체계적인 연구사례를 찾기 힘들다. 본 연구에서는 새로운 접속료 산정방안 도입의 타당성을 검증하기 위하여 3G 이동통신과 관련된 기술, 시장, 규제 측면에 대한 통합적인 분석을 수행한다. 연구결과, 합리적인 접속료 산정과 관련한 3G 망 특성상의 여러 가지 기술적 한계, 이동통신 시장의 발전속도의 가변성, 사전규제의 타당성 검증문제, 그리고 수집 가능한 해외사례 등을 고려했을 때, 즉각적인 원가기반 접속료 산정방안 마련 및 적용은 합리적이지 못하며, 해당 시장의 성숙 또는 All-IP망으로의 진화 이후로 접속료 산정방안 개선시기를 미루는 것이 효율적임을 제안한다.

• 품질경영학회지
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• 제35권3호
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• pp.37-46
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• 2007

Our society is increasingly dependent on the Internet, and this trend will be accelerating in the ear of All-IP convergence. As the core infrastructure of the All-IP convergence, the next generation Internet should enable end-to-end Quality of Service(e2e QoS). For that purpose, major international standardization institutes such as ITU(International Telecommunication Union) and IETF(Internet Engineering Task Force) are building the concept and architecture of the Next Generation Network(NGN). However, these institutes focus only on technical issues, and leave many business/policy-oriented challenges unresolved. For example, the standards raised by ITU assume that the entire service delivery process for e2e QoS services is perfectly working. But required is a standardized business interface and process for seamless inter-operations across many stakeholders including ISPs(Internet Service Providers), CPs(Content Providers), so on. On the other hand, TMF(TeleManagement Forum) and QuEST(Quality Excellence for Suppliers of Telecommunication) Forum, global consortiums of telecom operators and vendors, present sets of interface rules and process which playa crucial role as de facto standards: for example, NGOSS/eTOM and TL9000 authorization system. However, these standards focus on telephone services, and provide little principle for the next generation Internet. Our study seeks a way to combine these two strains for a successful implementation of NGN. In particular, we find a missing link in the NGN architecture and the elements that could be complemented with the help of NGOSS/eTOM and TL9000. Finally, presented is a strategic direction that our standardization policy should purse in order to reinforce our global leadership for the next generation Internet.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제10권4호
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• pp.1892-1903
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• 2016

Mobile social network is becoming more and more popular with respect to the development and popularity of mobile devices and interpersonal sociality. As the amount of social data increases in a great deal and cloud computing techniques become developed, the architecture of mobile social network is evolved into cloud-based that mobile clients send data to the cloud and make data accessible from clients. The data in the cloud should be stored in a secure fashion to protect user privacy and restrict data sharing defined by users. Ciphertext-policy attribute-based encryption (CP-ABE) is currently considered to be a promising security solution for cloud-based mobile social network to encrypt the sensitive data. However, its ciphertext size and decryption time grow linearly with the attribute numbers in the access structure. In order to reduce the computing overhead held by the mobile devices, in this paper we propose a new Outsourcing decryption and Match-then-decrypt CP-ABE algorithm (OM-CP-ABE) which firstly outsources the computation-intensive bilinear pairing operations to a proxy, and secondly performs the decryption test on the attributes set matching access policy in ciphertexts. The experimental performance assessments show the security strength and efficiency of the proposed solution in terms of computation, communication, and storage. Also, our construction is proven to be replayable choosen-ciphertext attacks (RCCA) secure based on the decisional bilinear Diffie-Hellman (DBDH) assumption in the standard model.

• 한국산학기술학회논문지
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• 제18권1호
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• pp.553-564
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• 2017

본 연구는 이동통신 정책변화에 따른 사업자간 경쟁양상을 분석하였다. 이동통신 시장은 시장진입이 제한적으로 한정된 사업자들이 독점 형태로 경쟁하게 된다. 이 과정에서 정부는 소비자의 권리보호 및 기업들 간의 유효경쟁체제를 위해 기업의 경제활동을 규제하는 역할을 해왔다. 그동안 이동통신시장에서의 정부규제에 대한 성과나 결과를 분석하는 많은 연구들이 있었지만 제도의 중첩으로 인한 복합적 양상을 분석하는 연구는 부족하였다. 이에 본 연구는 실제 데이터를 사용하여 제도의 중첩으로 인한 사업자 경쟁구도의 복합적 양상을 확인한 첫 연구라는 점에서 그 의의를 갖는다. 본 연구는 기업의 성과지표인 가입자 수, 번호이동자수, 매출액 등의 실증데이터를 사용하여 정책변화에 따른 통신사업자간 경쟁양상을 연구하였다. 연구결과 통신시장에 도입된 정부 정책은 시장경쟁 촉진과 고착화된 경쟁구도 완화에는 긍정적인 영향을 미쳤지만 통신사 재무성과 개선 측면에선 부정적인 영향이 있었음을 확인하였다. 특히 단통법은 이동통신사간 유입영향력 차이를 줄이며 시장 안정화를 유도하고 MVNO의 점유율 상승에 발판을 마련하는 등의 긍정적인 효과도 있지만, 일정 기간 이후 기존 MNO 사업자의 영향력이 증가하여 MVNO의 경쟁력이 약화되는 부정적 변화를 확인하였다.

• 한국통신학회논문지
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• 제4권1호
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• pp.8-24
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• 1979

Including the Qualfication of Staffer required for Commuinication, the National Law of Professional qualification is a basic law for supply with manpower of high growth industry, and it is aiming at perfect the national Policy Concerned improvement for education and training of staff, carrying out of state examination for qualification and getting an occupation or application for special qualification. This law has established a management committee for qualification system in The Ministry of Science and Technique ROK, and authorized competence Minister according to kind of special qualification aiming at getting employment, practical use and courteous treatment in society and economy for national qualification, and also regulated their each official duty. A qualification of staffer required for communication is an administrative measure giving as occupational certificate after some examination for knowledge, technique and faculty in vocational ability to adapt to intrinsic of telecommunication. This certificate has the cause of an attribution of over the sphere of telecommunication, and so it has been originated in international situation, and then some of them is forced by international law, otherwise it be in common use between the nations. The Characteristic and orthodox of communication certificate has been succeded continually in company with development of telecommunication and the appliable field of them is specified, but the sovereign power of nation is approved by ITU that she can extent the applicable position for communication certificate and coordinate the utility of qualification for telecommunication value. Korean telecommunication law excepted the application of communication certificate in public communication field. It is unreasonable and even disobeyed against the theory of communication science and intrinsic of telecommuncation. Therefore it should be corrected immediately and then communication certificate have to accept in the public communication field at all, if so, the application field of communication certificate can have more than useful extenxion such as administration measure should be achieved by the management committee for qualification system in Ministry of Science and Technique and competemce Minister appointed according to special kind of certificate and the administration have to manage by the method and proccess caused by communication science or cooperative system between administration, industry, education and science. And, then, every acquisitor of qualification also has to try to perfect his vocational duty sincerely and to promote each self-realization.