• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2005년도 추계종합학술대회
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• pp.11-14
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• 2005

In this paper, we propose a method for transmitting SMS(Short Message Service) for VoIP(Voice over IP) service supporting multi-protocol. The multi-protocol VoIP under consideration are generally composed of H.323, SIP and MGCP and Most ITSPs(Internet Telephony Service Provider) provide VoIP service with H.323 and SIP now. SMS is killer application in mobile telecom service and many people of various field use that service. For example, user can send many SMS messages and substitute e-mail. Also SMS can be provided with various internet application. Ahn, legacy phone of KT, can use SMS. Therefore VoIP phone also can be required with the same requirement. With the multi-protocol VoIP we will propose several methods sending efficiently SMS. To show the validity of the proposed method some examples are given in which the results can be expected by intuitive observation.

• 전자통신동향분석
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• 제33권1호
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• pp.111-122
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• 2018

In this review, several new technologies considered when providing an open service environment in a mobile communication network are described. Recently, 3GPP developed some standards related to IoT services for opening a service platform in an SCS environment based on the OSA concept in a 3GPP LTE system. Similarly, the development of a new framework is underway to allow a plurality of services to commonly use an API environment in which a service provider or client accesses a 5G mobile communication system. Extending the existing LTE SCEF concept, the standardization of the northbound API is applied in the 5G CAPIF environment. Therefore, it is possible to construct a framework that facilitates access from outside, and takes advantage of the common management of various open service environments. An open service platform environment is expected to play an important role in transforming a network with simple connectivity services into a variety of new service markets, or into a service environment that can create added value.

• 한국IT서비스학회지
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• 제10권3호
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• pp.297-312
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• 2011

Service science has emerged as the key factor in developed economies as it becomes the main driver of productivity and economic growth. MICE industry has also opened up new revenues through improved services and new services which is a more attractive strategy for success. The importance of adoption of service science has recently emerged in MICE industry. However it has not been provided a detail action plan it is needed positive interesting and common endeavor of academy, industry, and government sector. In this context, we analyzed the major issues in adoption of service science in the MICE industry and developed the paradigm model by ground theory approach and proposed a roles of MICE service provider, mediator and consumer for service science adoption which have not been treated as a research topic in the domestic MICE areas sofar.

• Journal of Communications and Networks
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• 제11권1호
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• pp.36-41
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• 2009

The IEEE 802.16 wireless metropolitan area network (WMAN) standard is designed to correct expensive communication costs in CDMA-based mobile communication systems and limited coverage problems in wireless LAN systems. Thus, the IEEE 802.16e standard can provide mobile high-speed packet access between mobile stations and the Internet service provider through the base station with cheap communication fees. To efficiently accommodate voice over IP (VoIP) services in IEEE 802.16 systems, an uplink quality of service packet-scheduling scheme is proposed, and its performance is evaluated with an NS-2 network simulator in this paper. Numerical results show that this proposed scheme can increase the system capacity by 100% more than in the unsolicited rand service (UGS) scheme and 30% more than the extended real-time polling service (ertPS) scheme, respectively.

• 한국IT서비스학회지
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• 제14권4호
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• pp.221-236
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• 2015

Application software is delivered to customers as a form of service at cloud environment. A cloud service provider is a marketplace between supply side (application providers) and demand side (customers). Cloud service providers have to validate applications to be included in their service portfolio. Not only performance, security, networking, compliances should be checked but also business contract, authentication should be provided. Organization customers are more sensitive to these validation criteria and process. We study the Internet2 NET+, which is a successful cloud marketplace of applications for research and education organizations. This case study shows us three things : (i) a cloud marketplace's application management process : selection, validation, transition to service, customization of applications (ii) what a cloud marketplace has for its infrastructure like authentication, security, access control etc. (iii) what a cloud marketplace has as its governance structure. This case study will provide informative analysis of Internet2 NET, a profit-making vertical and buyer's marketplace (education industry). And we will get some strategic implications for planning and implementing cloud marketplaces.

• Journal of Information Processing Systems
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• 제17권2호
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• pp.426-439
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• 2021

To alleviate the cold-start problem and data sparsity in web service recommendation and meet the personalized needs of users, this paper proposes a personalized web service recommendation method based on a hybrid social network and multi-objective immune optimization. The network adds the element of the service provider, which can provide more real information and help alleviate the cold-start problem. Then, according to the proposed service recommendation framework, multi-objective immune optimization is used to fuse multiple attributes and provide personalized web services for users without adjusting any weight coefficients. Experiments were conducted on real data sets, and the results show that the proposed method has high accuracy and a low recall rate, which is helpful to improving personalized recommendation.

• 정보기술과데이타베이스저널
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• 제6권1호
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• pp.47-57
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• 1999

CITIS(Contractor Integrated Technical Information Service) is a service standard which specifies guidelines which are required for the fulfillment of a contract between a purchaser and a supplier. It was initiated as a military standard and is now becoming a commercial standard. In this paper, we propose how the guidelines, which were usually developed by Client/Server methods in previous works, can be implemented in WWW environments, and show a prototype which can be used for the confirmation of CAD drawings between contractors(purchaser and provider). We have a hope our study can provide a small foundation for the building of CITIS references.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2007년도 Proceedings of ISRS 2007
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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.

• 정보와 통신
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• 제7권2호
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• pp.35-42
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• 1990

현대사회가 고도의 정보화 사회로 진전 됨에 따라 기존의 정보매체인 TV나 신문 등과 같이 일방적인 정보 전달 기능을 갖는 단방향성 정보매체방식이 아닌 사용자의 요구에 따른 신속하고 다양한 정보의 제공이 가능한 쌍방향 정보 전달 매체가 필요하게 되었는데 그리하여 등장한 것이 VIDEOTEX이다. 본 보고서는 Videotex의 주요 요소중 한글처리를 지원하는 Videotex Software 인 HDSPS(Hyundai Service provider system)의 데이터베이스 구조 및 소프트웨어 구현을 고찰함과 동시에 각 기능에 대해 기술하고 있다.

• 디지털융복합연구
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• 제10권10호
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• pp.523-528
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• 2012

최근 IaaS(Infrastructure as a Service), PaaS(Platform as a Service), SaaS(Software as a Service)를 포함한 클라우드 서비스의 등장과 진화는 정보통신기술 발전에 기여한 가장 큰 잠재력을 가진 기술 중에 하나이다. 현재의 클라우드 관련 연구들은 기술 자체에 중점을 두고 있으나, 클라우드 서비스를 둘러싸고 있는 비즈니즈 측면에서의 이슈들에 대한 이해도 시급하다. 점점 더 많은 개인과 기업의 정보들이 클라우드 서비스에 놓이게 되면, 주된 관심은 어떻게 안전하고 신뢰할 수 있는 클라우드 서비스를 제공할 것인가에 맞추어지게 된다. 본 논문에서는 클라우드 서비스 중에서 그 중요성이 더 커지고 있는 SaaS에 대하여 초점을 맞추기로 한다. 성공적인 SaaS 서비스를 위해서는 SaaS 서비스의 안전성과 신뢰성을 보증할 수 있는 인증제도의 수립이 필요하다. 본 논문에서는 안전하고 신뢰할 수 있는 SaaS 서비스를 위한 인증제도의 프레임워크를 개발한다. 이를 위하여 SaaS 서비스 품질과 인증과 관련된 핵심 이슈들을 식별하고, SaaS 서비스 영역과 SaaS 서비스 제공자 영역의 인증제도를 위한 시스템적인 프레임 워크를 개발한다. 또한 개발된 인증제도의 평가방안도 제안한다.