• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 2004년도 춘계공동학술대회 논문집
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• pp.335-338
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• 2004

In this paper, we present a perspective of the next generation mobile communication services and its characteristics. As a preliminary research work on the next generation mobile communications and services, we exploit the next generation mobile services [1]. We define the next generation mobile services as strata of services consisting of three different service levels, the service areas, the service functionalities, and the service technologies. We derive these service levels by means of the scenario based analysis. Finally, we propose a conceptual network architecture that can support the next generation mobile services by placing network functions and service elements within the network.

• 한국IT서비스학회지
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• 제9권4호
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• pp.243-259
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• 2010

It is expected that the next generation mobile communication system will be a service-driven developed system capable to realize the human-centric mobile convergence services. and it is different from the technology-driven development approach of the second and the third generation mobile communication systems. As a preliminary research work on such service-driven system development approach for the next generation mobile communication system. we developed the scenario based service analysis process (2SAP) framework to derive core service technologies and functionalities. In this paper. we propose the next generation mobile convergence service business model creation methodology based on research results of the 2SAP framework. To achieve this goal, we first establish a service model contains several components such as infrastructures. operations. and provision of services that are indispensible for providing next generation mobile services. Then, the next generation mobile services and its corresponding business models can be created by adding service and value flows to the developed service model after defining necessary components of business model including actors, their relationships, and roles.

• 한국통신학회:학술대회논문집
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• 한국통신학회 2004년도 추계종합학술대회 논문 초록집
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• pp.95-95
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• 2004

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 2007년도 추계학술대회 및 정기총회
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• pp.358-373
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• 2007

In this paper, we proposed the next generation mobile convergence service business model creation methodology. In order to establish such a business model creation methodology framework, we first introduce the service model based on our previous research results on next generation mobile convergence services. The service model contains several components such as infrastructures, operations, and provision of services that are indispensible for providing the next generation mobile services. Finally, by adding service and value flows to the developed service model, we propose the next generation mobile services business model creation methodology. To achieve this objective, we first derive necessary components of business model including actors, their relationships, and roles. In addition, we propose service composition methodology for creating new mobile services and its corresponding business models.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2007년도 하계종합학술대회 논문집
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• pp.187-188
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• 2007

A stripline fed slot antenna for UWB communication is designed by using Ensemble simulator. The antenna has a broadband characteristics which causes a fork-like tuning stub. The ground of this antenna has two conductor lines for WLAN band(5GHz band) rejection.

• 한국멀티미디어학회논문지
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• 제10권4호
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• pp.470-482
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• 2007

본 논문에서는 NGMC 포럼의 차세대 이동 통신 서비스 로드맵 작성을 위하여 차세대 이동 통신 서비스들을 카테고리별로 분류하고 서비스 진화 시나리오를 작성한다. 구체적으로, 사용 목적에 따라 차세대 이동 통신서비스 카테고리를 선정하고, 해당 카테고리 별로 서비스들을 분류한 뒤, 각 서비스들의 상관 관계를 분석하여 카테고리별 서비스 진화 시나리오를 작성한다. 분류 및 분석 대상 서비스는 현재 제공되고 있는 서비스뿐만 아니라 개념적인 수준에서 논의되고 있는 모든 종류의 서비스들 중에서 선정된다. 본 논문의 결과물인 카테고리별 서비스 진화 시나리오를 이용하여 차세대 이동통신 서비스 로드맵이 완성된다면, 차세대 이동 통신분야에서의 주도권 확보 및 경쟁력 증대에 기여할 수 있을 것으로 기대된다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2014년도 추계학술대회
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• pp.618-619
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• 2014

본 논문에서는 네트워크 QoS를 위한 차세대 이동망의 설계 방안을 고려하며, 이에 필요한 요소에 대해 분석한다.

• 한국경영과학회지
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• 제29권1호
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• pp.87-99
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• 2004

In this paper, we have developed a technology-service relationship model which describes the diffusion process of a group of services and relevant technologies, and have applied the developed model to the prediction of the number of subscribers to the next generation mobile service. The technology-service relationship model developed in this paper incorporates the developing process of relevant technologies, a supply-side factor, into the diffusion process of specific services, while many diffusion models and multi-generation diffusion models in previous researches are mainly reflect the demand-side factors. So, the proposed model could effectively applied to the telecommunication services where the developing of the relevant technologies are very essential to the service Penetration. In our application, the Proposed model provides a competitive substitution between the next generation mobile service and the traditional mobile service.

• 한국항행학회논문지
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• 제17권1호
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• pp.56-62
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• 2013

최근 차세대 이동통신 시스템은 스마트폰을 시작으로 다양한 멀티미디어 콘텐츠 서비스를 지원하고 있다. 따라서, 음성통화를 목적으로 한 시스템 사용에 비해 멀티미디어 서비스를 위한 시스템 사용이 점차 증가하고 있다. 멀티미디어 서비스의 증가는 사용자의 시스템 사용시간을 증가시키고, 시스템의 정해진 전력에 비해 사용 시간을 단축시킴으로 효율적인 전력사용에 대한 연구가 필요하다. 또한 도시 집중화 환경에 의한 음영지역의 출현으로 인한 불필요한 전력소모가 발생되고 있으며, 이러한 문제는 차세대 이동통신 시스템의 사용 시간 단축에 큰 영향을 미친다. 본 논문에서는 차세대 이동통신 시스템의 통신망 구조를 살펴보고, 음영지역에서의 불필요한 전력사용을 살펴본 후, 효율적인 전력사용을 위한 방법을 제안하고 시뮬레이션을 통해 차세대 이동통신 시스템의 효율적인 전력사용에 대해 분석했다.

• 한국정보통신설비학회:학술대회논문집
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• 한국정보통신설비학회 2007년도 학술대회
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• pp.273-278
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• 2007

In the next generation wireless mobile network, various methods are studied to offer interworking and mobility between various radio networks. To offer these harmoniously, network adaptation methods based on IP is generalized, and specifications of host-based mobility method with Mobile IPv4 and Mobile IPv6 to offer IP's mobility are defined in IETF specially. However, it is insufficient to satisfy quality of service that should be offered in wireless mobile network environment. Alternatively studies about Network-Based Mobility of Proxy Mobile IPv4, Proxy Mobile IPv6 etc. are preceded. This paper presents optimum plan that can offer mobility in the next generation radio transfer communication network by comparing and analyzing IP mobility methods divided by Host-based Mobility and Network-based Mobility.