• 대한원격탐사학회:학술대회논문집
• /
• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
• /
• pp.567-570
• /
• 2005

Recently, as mobile paradigms such as telematics or LBS (Location Based Service) have been being more diverse and mobile devices such as PDA (Personal Digital Assistance) or several telematics terminals have been being used more widely, mobile services, for example, mobile geographic information service have been being put more importance by people. In this paper, we propose to adopt S/W and data streaming mechanism as a method to improve performance of mobile geographic information service which is a representative of mobile services based on client-server architecture. The show the effectiveness of proposed methods, we design and implement S/W streaming prototype system and sample mobile geographic information service to be executed on the S/W streaming system.

• 디지털산업정보학회논문지
• /
• 제6권4호
• /
• pp.83-94
• /
• 2010

Mobile network infrastructure is being completed with the development of hardware and software for mobile devices. Network in mobile devices has evolved for telematics that is expanded much more than its existing concept. Telematics is compound word that is formed from the words "telecommunication" and "informatics". It means that telematics performs control and monitoring service with using mobile device resources. These services provide their services for users' requests through wired or wireless network from mobile devices and server that offers contents and network service collects management information of mobile devices. Map service is one of the preferred services for many telematics users. However, mobile map service has a limit between traffic and information sharing. Therefore it is very important to supply their information for both service provider and terminal user. In this paper, we design a new interactive sketch map using routes and information on the space to be applied effectively, and provide an extended document format that is defined to an extensible and dynamic clustering scheme to have portability map service for mobile device.

• ETRI Journal
• /
• 제29권1호
• /
• pp.107-109
• /
• 2007

In location-based services, most trigger technologies have been implemented on the server side by periodically requesting the locations of mobile phones from mobile network servers. However, bottlenecks and communication interruptions occur when the servers are overloaded by trigger requests. In this letter, we propose a new multilevel location trigger specification which distributes the event detecting role to mobile phones and redesigns the location triggering into a multilevel step. Our suggested location trigger specification can reduce bottlenecks caused by triggers in a mobile core network and reduce power consumption caused by embedded GPS devices in mobile phones.

• 한국정보기술응용학회:학술대회논문집
• /
• 한국정보기술응용학회 2005년도 6th 2005 International Conference on Computers, Communications and System
• /
• pp.85-90
• /
• 2005

The advance of mobile and telematics technologies has produced vehicles with various convenient services for drivers. Specifically lots of researches and several technologies have been developed to provide services of a remote vehicle diagnosis and control. The existing and representative product for a vehicle control is a RCS (remote control system), but it has a problem of short control distance and fragile security. In this paper, a telematics terminal embedded with CDMA and GPS is designed, which can be connected to the Internet. It allows a driver with a cellular phone to remotely diagnosis and control a vehicle via wireless network and SMS.

• 한국인터넷방송통신학회논문지
• /
• 제10권5호
• /
• pp.259-264
• /
• 2010

본 논문에서는 기존에 근거리전용통신 방식보다 다양한 서비스를 제공하고, 위치정보와 무선통신망을 이용한 브랜드 콜, 화물차 및 관용차 등의 서비스에 적용이 가능할 뿐 아니라 긴급 구난 정보제공, 무선인터넷, 영화 및 게임 등 멀티미디어 서비스를 제공하기 위한 경쟁력 있는 차량용 무선 이동시스템을 설계하여 이를 바탕으로 와이브로 기반의 무선 텔레매틱스 단말시스템을 구현하고자 한다. 이동 차량 내 유비쿼터스 환경 구축을 위한 와이브로 기반의 무선 텔레매틱스 단말 시스템을 구현한다. 모의실험을 통하여 텔레매틱스 시스템의 고정대역과 가변대역에 대한 시스템 분석을 하였다.

• 대한원격탐사학회:학술대회논문집
• /
• 대한원격탐사학회 2004년도 Proceedings of ISRS 2004
• /
• pp.268-271
• /
• 2004

Today, the vehicle is used the mean of transportation as well as the mobile office with the third digital life space. So telematics is an emerging industry that has tremendous future potential. It is necessary the essential contents for telematics services : navigation map for navigation, POI, real-time traffic information etc. In this paper, we proposed the telematics contents server to manage the telematics contents with efficient performance in distributed environment. The telematics contents server transforms and stores the essential contents and provide it to user through standard interface. The telematics contents server is middleware to offer a rapid essential telematics contents management, client connectivity, and communications. It is useful for the telematics service provider to build telematics system under distributed environment.

• 한국공간정보시스템학회 논문지
• /
• 제9권1호
• /
• pp.15-30
• /
• 2007

본 연구의 목적은 모바일 텔레매틱스 서비스 사용자의 사용 의도에 직접적인 영향을 미치는 요인들을 탐색하여, 요인 간 연관관계를 제시하는 것이다. 대부분의 연구들이 동향 분석이나 요구사항 정립에 편중되었고, 본질적인 영향 요인의 분석에 대한 연구의 미비로 연구수행이 일시적으로 끝나거나 선행연구와의 일관성이 결여되었다. 따라서 본 연구는 사용 의도에 미치는 변수 및 가설을 도출하여, 대표적인 정보기술 수용모델인 Davis의 기술수용모형(Technology Acceptance Model, TAM) 이론을 적용하여 확장된 연구모형을 정립하였다. 연구방법은 현재 이동통신사에서 제공하는 텔레매틱스 서비스 사용자를 대상으로 한 설문조사의 통계적 검증을 통한 실증적 연구를 수행하였다. 분석 결과 정보의 정확성, 이용요금 적합성, 위치성, 즉시연결성이 사용자의 사용 의도에 대하여 정의 관계를 보였으며, 특히 정보의 정확성이 가장 중요한 영향 요인으로 검증되었다. 본 연구는 연구모형을 중심으로 한 모바일 텔레매틱스 서비스 사용 의도에 영향을 미치는 요인들의 연관관계를 검증한 실증적 연구로서, 연구의 확장성 측면에서 의미가 있다. 텔레매틱스 서비스 시장의 진화과정을 고려할 때, 본 연구의 산출물은 향후 신정보기술 서비스의 사용 활성화 방안에 응용하거나 산업 정책적 가이드라인을 제시하는데 실증적인 지표로도 활용이 가능할 것이다.

• International Journal of Automotive Technology
• /
• 제7권4호
• /
• pp.509-517
• /
• 2006

In the mid 1990s, the combination of vehicles and communication was expected to bolster the stagnant car industry by offering a flood of new revenues. In-vehicle computing systems provide safety and control systems needed to operate the vehicle as well as infotainment, edutainment, entertainment, and mobile commerce services in a safe and responsible manner. Since 1980 the word "telematics" has meant the blending of telecommunications and informatics. Lately, telematics has been used more and more to mean "automotive telematics" which use informatics and telecommunications to enhance the functionality of motor vehicles such as wireless data applications, intelligent cruise control, and GPS in vehicles. This definition identifies telecommunications transferring information as the key enabling technology to provide these advanced services. In this paper, a possible framework for future telematics, which called an Intelligent Vehicle Network(IVN), is proposed. The paper also introduces and compares a number of existing technologies and the terms of their capabilities to support a suite of services. The paper additionally the paper suggests and analyzes possible directions for future telematics from current telematics techniques.

• 대한원격탐사학회:학술대회논문집
• /
• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
• /
• pp.317-320
• /
• 2005

The LBS (Location-Based Services) are valuable information services combined the location of moving object with various contents such as map, POI (point of Interest), route and so on. The must general service of LBS is route determination service and its applicable parts are FMS (Fleet Management System), travel advisory system and mobile navigation system. The core function of route determination service is determination of optimal route from source to destination in various environments. The MODB (Moving Object Database) system, core part of LBS composition systems, is able to manage current or past location information of moving object and massive trajectory information stored in MODB is value-added data in CRM, ERP and data mining part. Also this past trajectory information can be helpful to determine optimal route. In this paper, we suggest methods to determine optimal route by querying past trajectory information in MODB system and verify the effectiveness of suggested method.

• 대한원격탐사학회:학술대회논문집
• /
• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
• /
• pp.659-662
• /
• 2005

Recently, the need for LBS (Location Based Services) is increasing with the rapid growth of the location measurement units, mobile devices, and communication technologies. Especially, wireless carriers are concentrating on LBS since it is regarded as so-called 'killer application' among wireless data services. Although LBS give us convenience and useful information, its use also raises privacy issues. There are quite possibilities that the people's locations are tracked by location measurement units while people do not recognize the existence of the units. To protect a person's location information, lawful and technical aspects should be considered. In this paper, we explain issues, regulations, standards, and platforms related to the protection of the location information. Finally, we suggest the architecture of a platform complying with the regulations and standards. It considers various issues not covered in other studies.