• The Journal of the Korea Contents Association
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• v.2 no.2
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• pp.85-90
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• 2002

This paper presents tuo implementation models for wireless service operators to offer Mobile-IP over IMT-2000 Data service under IMT-2000 network by taking advantage of the existing infrastructure for IMT-2000 services. For this purpose, a new Mobile-IP over IMT-2000-based protocol architectures are introduced and service operation schemes and handoff schemes according to various scenarios of packet data services in the IMT-2000 core network are presented. Also, this paper describes the handoff scheme in terms of channel states.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.10b
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• pp.1051-1054
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• 2000

IMT-2000 moving picture messaging service is a primary auxiliary connection service that allows a caller to leave a message when the caller can not complete the call. As the number of service subscriber for wireless communication is dramatically increased, various wireless services as well as simple connection service are requried IMT-2000 moving picture messaging service increases the call completion rate and makes it possible to provide various services.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.10b
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• pp.1529-1532
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• 2000

제 3 세대 이동 통신인 IMT-2000 서비스의 목적은 언제 어디서나 어떠한 환경 하에서도 고품질의 영상과 신뢰성 있는 멀티미디어 서비스를 제공한다는 점이다. 기존의 2 세대 이동통신에서의 엔터테인먼트 서비스가 텍스트 기반의 온라인 게임이나 단순한 이미지 및 그래픽 파일 그리고 저 해상도의 영상만이 제공되었다면 IMT-2000 상에서의 엔터테인먼트 서비스는 개인화가 부각된, 눈으로 보고 느낄 수 있는 고 부가가치의 영상서비스를 제공 할 것이다. 사용자는 정지 또는 이동 중에도 IMT 단말기로 3 차원 게임을 즐기고 실시간 또는 주문형 영상 및 음악을 시청하며 여행정보를 수집하는 등의 더욱 더 효과적인 무선 오락을 즐길 수 있도록 기존의 시간 때우기 식의 개념에서 벗어나 자신만의 가상 세계를 체험할 수 있는 사이버 월드의 킬러 서비스로서 기반을 다져가야 할 것이다. 본 고에서는 IMT-2000 엔터테인먼트 서비스와 이에 관련되는 소요기술 등을 기술 하고자 한다.

• Journal of Advanced Navigation Technology
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• v.10 no.4
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• pp.312-318
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• 2006

WRC-2000 allowed HAPS to provide IMT-2000 service in the bands 1885-1980 MHz, 2010-2025 MHz and 2110-2170 MHz which have been utilized by the conventional terrestrial IMT-2000 service. In this paper, we analyze the interference effects from HAPS into terrestrial IMT-2000 system in adjacent band. To do this, in this paper, we have analyzed the interference and the sharing criteria between HAPS and the conventional terrestrial/satellite mobile system by considering the service and system requirements, the specification of system and developing the interference scenarios and the analysis algorithms.

• IE interfaces
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• v.15 no.3
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• pp.256-262
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• 2002

In this paper, we develop a framework for identifying the quality of service(QoS) and network performance (NP) in the IMT-2000 services, and analyze the QoS/NP system in the 3GPP IMT-2000 services. Based on the ITU-T E.800, the QoS is classified into customer, technical, contents, telecommunications quality, and internet communication quality, and the NP consists of the service access/transmission, reliability/operating & maintenance, charging performance, and mobility management performance. Under the basic framework, the major parameters in the IMT-2000 services are identified for each QoS/NP criterion. The QoS framework in the IMT-2000 user aspects is also introduced to determine the major QoS parameters. Finally, to define the performance factors of the network elements in the NP system, the various control parameters for the wireless and core networks are presented.

• Journal of the Korea Society of Computer and Information
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• v.7 no.3
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• pp.99-108
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• 2002

Users location management and handoff management is constructed more effective for giving satisfaction to QoS of multimedia service in Mobility network. For this, We have the HLR of IMT-2000, difference of the HLR of PCS, and connectivity Artificial Intelligent network and to provide data service of packet that is analyze to effect on the HLR. We have a study on effective for satisfaction of QoS, that is the VHE of full concepts for provide of service in the IMT-2000, packet data service for internet connectivity, for satisfaction of QoS on basis mobility network technologies of the 2nd generation.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10a
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• pp.279-281
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• 1998

기존 이동통신 시스템은 단말 및 개인 이동성의 결여, 저조한 데이터 전송율, 그리고 서비스 도입 및 호환성의 어려움이 존재한다. 이를 해소하기 위해 국제적으로 차세대 이동통신 시스템으로 IMT-2000에 대한 연구와 개발이 이루어지고 있다. 또한 IMT-2000은 기본적으로 지능망에 근간한 구조를 지향하며, 다양한 서비스들의 실현 및 신속한 도입을 위하여 지능망이 IMT-2000의 기능 모델 표준으로 채택되고 있으며. 이를 기반으로 다양한 서비스가 개발되고 있다. 한편 IN CS-2의 목표서비스(target service) 의 하나로서 가상 사설망 서비스는 기존 사설망의 독립적인 망 운영을 유지하면서, 공중망의 자원을 이용하여 기존 사설망의 과다한 초기 투자 비용을 해소시키는 장점을 제공한다. 본 논문은 IMT-2000의 서비스 제어를 위해 IMT-2000의 망 구종에 도입된 지능망 모델을 분석하고 IMT-2000상에서 특히 기존 고정/이동 통신망과 달리 기본적으로 제공되는 개인 이동성을 고려하여 지능망의 서비스 제어 모델에 따라 가상 사설망 서비스를 설계한다.

• The Transactions of the Korea Information Processing Society
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• v.6 no.8
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• pp.2133-2144
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• 1999

IMT-2000 system is expected to start its service at the beginning of 2000 on the purpose of providing with the highest qualitative service through one mobile terminal. In this paper, we investigate some of the important issues which need to be addresses in designing an authentication protocol for IMT-2000. Also proposed is an authentication protocol which addresses the above issues, and we design a correct and efficient authentication protocol to establish secure communication channel. Our protocol provides an authentication of the communication entities, location privacy, and secure messaging as well as global roaming service.

• Proceedings of the Korea Technology Innovation Society Conference
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• 1998.05a
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• pp.22-22
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• 1998

This paper reviews the benefits of users participation in IMT-2000 standardization by the creation of users coalitions, focusing in particular on phased standards strategy necessary for the evolutionary approach from second generation to third generation systems. It first presents in detail the current status of IMT-2000 standardization progress occurring at each regional standard body including TIA of US, ETSI of Europe, TTA of Korea and ARIB of Japan. With this clear understanding of standardization situations worldwide, we may be able to come up with our standards strategies related to IPR issues and efficient standard-setting mechanism between manufacturers and service providers. In addition, this paper addresses the necessity for phased licensing of IMT-2000 service in order to avoid the high cost of new infrastructures and ensure an acceptable financial investment returns for existing cellular and PCS service providers. An author hopes that this paper can provide the adequate standardization directions of IMT-2000 to satisfy the varying regional and global market requirements.

• Korean Management Science Review
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• v.25 no.1
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• pp.29-41
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• 2008

In the mobile communication service market, this study represents an attempt to forecast the subscribers of the IMT-2000 service market using the questionnaire of experts which is the qualitative technique is used. In this study, by using the substitution model of next generations among products in order to analyze the IMT-2000 demand of service, a demand was predicted. And by estimating the market demand prospect in which it becomes the important factor of the IMT-2000 service diffusion according to each bandwidth frequency the politically necessary approaching direction about the frequency was presented. It will be able to become the important part to not only the business carrier but also the policy maker to examine a prospect toward the subscriber of the IMT-2000 service. As a result, the market demand was exposed to be most big when the SKT 800MHz, and the KTF 800(900)MHz were used as the additional frequency. And it was likely to reach to the IMT-2000 number of subscribers to about 35.750 thousand peoples in the future at 2015.