• 정보화연구
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• 제11권3호
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• pp.261-270
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• 2014

The utilization of the Mobile Government system is having more than a few challenges including complexity of different mobile technologies, determining interoperability among existing systems and infrastructures, and establishing services with secured networks. To get over those challenges, integrated standard, innovative and comprehensive system architecture is required by the M-Government. Hence this study proposed reference EA framework for M-Government system in order to avoid unnecessary duplication of infrastructure deployment and integrate services among different government instructions. The study based on literature review, and current infrastructure and mobile network situation for delivering Government services of Mongolia. The study recommends innovative m-Government system framework used EA, and scope covered mobile service delivery area centered on G4C and C2G perspectives. The Federal Enterprise Architecture Framework has used in this research, and the proposed system service architecture defines the interoperable standards, infrastructure components, applications, and technologies for government institutions in Mongolia to aid interactions necessity among them to provide m-Service.

• 한국정보통신설비학회:학술대회논문집
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• 한국정보통신설비학회 2005년도 하계학술대회
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• pp.338-341
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• 2005

Recently there are increasing needs for Internet and various kinds of contents. These traffics for various contents need more amount of data to provide high-quality information and require various QoS depending on the characteristics of contents. However, current Internet service supports BE (Best Effort) service only, therefore IntServ (Integrated Service) scheme and DiffSserv (Differentiated Service) scheme are represented to support QoS in IP layer. This paper describes new scheme that provides QoS taking into account the traffic characteristics over Mobile IPv6 network based on IEEE 802.11e by decreasing signal process time using traffic class of DiffServ and evaluates the performance through computer simulation.

• 디지털융복합연구
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• 제15권7호
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• pp.169-180
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• 2017

중국 이동통신 시장은 2000년 이후 양적, 질적 성장을 거듭하여 현재 12억 7,300만 명의 이동통신 가입자를 확보하고 빠르게 성장하고 있다. 특히 국내 관련 기업의 중국 이동통신시장의 진출과 이를 위한 협력의 장이 열리고 있어 중국 이동통신 시장의 이해가 그 어느 때 보다 중요해 졌다. 따라서 본 연구는 중국 이동통신 서비스와 사용자의 전환행위간의 관계를 설명하고자 한다. PPM 이론을 적용하여 타 이동통신사로의 가입 전환의도에 영향을 미치는 요인을 확인하고, 월평균 이용요금에 따라 구분된 그룹별 전환요인과 전환의도간의 관계를 도출하고자 한다. 본 연구의 목적을 달성하기 위해 270명의 중국의 이동통신 이용자 대상 설문을 진행했고, Smart PLS 2.0로 데이터 분석을 수행하였다. 결론적으로 푸시효과가 타 통신사로의 전환의도에 정(+)의 영향을 미치고, 무어링효과 중 유대감 측면의 전환비용이 통신사 전환의도에 유의미한 부(-)의 영향을 미침을 확인하였다. 특히 월평균 요금 수준에 따라 통신사 전환의도에 유의미한 차이를 보였다. 본 연구를 통해 서비스 전환 연구에 활용되던 PPM이론의 활용 범위를 확장 하였으며, 실무적으로 중국 이동통신 시장 진출 전략 수립에 유효한 시사점을 제공할 것이다.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 2000년도 추계학술대회 및 정기총회
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• pp.310-313
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• 2000

This paper develops a model of customer satisfaction in the mobile telecommunication services. We examine the relationships among customers'overall satisfaction and underlying dimensions； perceived service quality, service value, and brand image. Variables related to customer satisfaction and dissatisfaction are derived from customer critical incidence survey. The model is estimated with multi-variate data analysis. Results indicate that the (1) technical service quality is the main driver of customer overall satisfaction, (2) some peripheral services are rapidly evolving into the core services of mobile telecommunications, and (3) the current policy of service providers does not focus on customer satisfaction but on establishing churning barrier by increasing switching costs.

• ETRI Journal
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• 제19권3호
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• pp.98-115
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• 1997

The architecture of the CDMA mobile system (CMS) is developed based on three function groups - service resource, service control, and service management groups. In this paper, the CMS architecture is discussed from the point of view of implementing these functions. The variable length packets are used for transmission. The synchronization clock signals are derived form the GPS receiver. The open loop and closed loop techniques are used for the power control. The internationally accepted signaling and network protocols are employed. The call control for the primary services in designed to provide efficient mobile telecommunication services. The softer handoff is implemented in one card. The mobile assisted handoff and the network assisted handoff are employed in the soft and hard handoffs. The authentication is based on the secret data which includes random numbers. The management functions, which include the location management, resource management, cell boundary management and OAM management, are implemented to warrant the system efficiency, maximum capacity and high reliability. The architecture ensures that the CMS is flexible and expandable to provide subscribers with economic and efficient system configuration. The dynamic power control, adaptive channel allocation. and dynamic cell boundary management are recommended for future work.

• 한국정보통신설비학회:학술대회논문집
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• 한국정보통신설비학회 2008년도 정보통신설비 학술대회
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• pp.336-339
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• 2008

Convergence services are very important to mobile operators in next generation mobile networks. However, mobile operators cannot deal with all convergence services because there are numerous convergence services. Thus, they should select and develop main technologies to provide convergence services which are areas to grow our business. In this paper, we introduce basic technologies to provide convergence services and then present some evaluation models to select an important area and technology.

• 한국통신학회논문지
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• 제36권1B호
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• pp.51-59
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• 2011

본 논문은 옥내에 모바일 브로드밴드 서비스를 제공하고 음영지역을 제거하여 커버리지를 확장시킬수 있는 모바일 소행기지국 기술을 이용한 통신사업자의 와이브로 펨토셀 시법서비스 제공을 배경으로 한다. 본 논문에서는 와이브로 펨토셀 시범서비스에 대한 시범가입자의 만족도를 분석하고 이를 토대로 와이브로 펨토셀 서비스의 시장접근에 대한 전략적 시사점을 제시한다. 모바일 서비스의 만족도에 관한 기존 연구 문헌들에서 제시된 광범위한 영향 요인들을 기초로 와이브로 펨토셀 서비스의 만족도에 대한 영향 요인의 관심 범위를 시스템 품질, 서비스 품질, 요금 특성으로 한정하여 이들 요인이 미치는 영향력에 대해 분석한다. 연구 결과, 기술 및 시장에서 아직 미성숙 단계인 와이브로 펨토셀 서비스는 시스템 품질과 과금 체계가 서비스 만족도에 상당한 영향을 미치는 경향이 있는 것으로 확인됐으며 이들 요인을 우선 고려한 시장접근이 유효할 것으로 보인다.

• International Journal of Internet, Broadcasting and Communication
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• 제14권2호
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• pp.63-69
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• 2022

We develop a smart tourism information system that provides smart tourism services to free independent tourists (FITs) through various content distribution channels such as mobile apps, Instagram, YouTube, and chatbots. The smart tourism information system provides location and storytelling-based tourism information, accommodation, restaurant information, and recommended travel products so that tourists can create a travel itinerary based on personalized situation awareness. The smart tourism information system also provides smart tourism services using commercial maps, navigation, and weather forecast APIs from the Korea Meteorological Administration to provide smart tour guide services to tourists who travel according to the travel itinerary. In this paper, we develop the React Native app that provides smart tourism services provided by the smart tourism information system. The smart tourism React Native app has implemented two methods: a method that directly connects to the smart tourism information system, and a method that provides services by interworking through the GraphQL Query Language developed by META (Facebook). The smart tourism React Native app implements OSMU (One Source Multi-use) by providing tourism information from mobile apps, photos from Instagram, and drone videos from YouTube as an integrated UI.

• International Journal of Advanced Culture Technology
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• 제10권1호
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• pp.310-316
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• 2022

The smart tourism service provides services such as travel planning and tour guides to tourists using key technologies of the 4th industrial revolution, such as the Internet of Things, communication infrastructure, big data, artificial intelligence, AR/VR, and drones. We are developing smart tourism services such as recommended travel products, my travel itinerary, tourism information, and chatbots for tourists through the smart tourism app. In this paper, we develop a smart tourism service system that provides real-time location-based tourism information and weather information to tourists. The smart tourism service system consists of a smart tourism app, a smart tourism information system, and an IoT data collection device. The smart tourism information system receives weather information from the IoT data collection device installed in the tourist destination. The location-based smart tourism service is provided as a smart tourism app in the smart tourism information system according to the Beacon's UUID in the IoT data collection device. The smart tourism information system stores the Beacon's UUIDs received from tourists and provides a safe hiking service for tourists.

• 산업공학
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• 제12권4호
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• pp.487-495
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• 1999

Mobile telecommunication service is one of the most competitive and rapidly growing industries in Korea. In competitive environments, it is essential to measure and improve customer satisfaction(CS) levels. However, there are a few problems in existing methods of CS measurement. First, sacrifice such as price is not included properly. Thus, the CS is not expanded into the value concept which is important to customer's behavioral intention. Second, CS measurements are not benchmarked with other competitive companies and CS index cannot reflex it properly. AT&T experienced these problems and suggested customer value added (CVA) for CS measurement. In this study, we try to introduce the CVA concept into our mobile telecom services. CS attributes were constructed, an survey was conducted for 5 mobile telecom companies, CS survey results were presented, and the validity of CVA concept was discussed.