• 한국정보통신학회논문지
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• 제23권7호
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• pp.786-792
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• 2019

현재 스마트 폰의 위치정보를 수집하고 이것을 이용한 다양한 종류의 콘텐츠들이 개발되어 사용자들에게 제공이 되고 있다. 위치정보를 활용하는 위치기반 서비스 산업의 시장규모 또한 매년 증가를 하고 있으며 가장 많은 스마트폰 사용자 층은 대학생들이 차지하고 있다. 그리고 그들 대부분은 자신들 소유의 스마트 폰을 사용하고 있으며, 그들은 위치기반 서비스의 최대 이용자이면서 동시에 위치정보 수집의 주요 대상자들이다. 본 논문에서 우리는 대학생들이 위치정보에 대하여 어느 정도 이해를 하고 있는지 설문조사를 실시하고자 한다. 설문조사 결과를 바탕으로 대학생들의 위치 정보 수집 및 이용에 대한 이해도를 높이고 위치 기반 서비스 산업 발전과 위치정보 교육을 위해 무엇이 고려되어야 하는지 깊은 고찰을 해보고 몇 가지 도움이 되는 제언을 하고자 한다.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2012년도 추계학술발표대회
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• pp.1053-1056
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• 2012

Location information is considered to be of prime importance in Vehicular Ad Hoc NETworks (VANETs) because important decisions are made based on accurate and sound location information. Vehicles exchange their whereabouts in the form of scheduled beacon messages with their neighbors. These messages contain location, speed, time, and lane information etc. In this paper we aim at the location security in VANET and emphasize on the confidentiality and integrity of location information in case of Nonline-of-Sight (NLoS). For location confidentiality we propose a geolock-based mechanism whereas for location integrity we leverage cooperation among neighbors. In case of NLoS, the verifier vehicle asks its one-hop neighbors in an efficient way to verify the claimed location of the node on his behalf. On the basis of trust values and weightage assigned to neighbors, it is decided whether the verification is sound.

• 한국GIS학회:학술대회논문집
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• 한국GIS학회 2003년도 추계학술대회논문집
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• pp.65-69
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• 2003

The Location Based Services comprised GIS and Telecommunication allow users to receive various services based on their geographic location. It is need to legislation to encourage the provision and use of location information by providing privacy protection to users. But the contents of the legislation proposed by Korean government have problems conflicted between protection of a person's location information and invigoration of location-based services. The purpose of this study is to search complementary measures for privacy protection of location information from From a viewpoint of effective management strategy for geographic information.

• Asia pacific journal of information systems
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• 제24권3호
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• pp.299-323
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• 2014

The reason location based service is drawing attention recently is because smart phones are being supplied increasingly. Smart phone, basically equipped with GPS that can identify location information, has the advantage that it can provide contents and services suitable for the user by identifying user location accurately. Offering such diverse advantages, location based services are increasingly used. In addition, for use of location based services, release of user's personal information and location data is essentially required. Regarding personal information and location data, in addition to IT companies, general companies also are conducting various profitable businesses and sales activities based on personal information, and in particular, personal location data, comprehending high value of use among personal information, are drawing high attentions. Increase in demand of personal information is raising the risk of personal information infringement, and infringements of personal location data also are increasing in frequency and degree. Therefore, infringements of personal information should be minimized through user's action and efforts to reinforce security along with Act on the Protection of Personal Information and Act on the Protection of Location Information. This study aimed to improve the importance of personal information privacy by empirically analyzing the effect of perceived values on the intention to strengthen location information security and continuously use location information for users who received location-based services (LBS) in mobile environments with the privacy calculation model of benefits and risks as a theoretical background. This study regarded situation-based provision, the benefit which users perceived while using location-based services, and the risk related to personal location information, a risk which occurs while using services, as independent variables and investigated the perceived values of the two variables. It also examined whether there were efforts to reduce risks related to personal location information according to the values of location- based services, which consumers perceived through the intention to strengthen security. Furthermore, it presented a study model which intended to investigate the effect of perceived values and intention of strengthening security on the continuous use of location-based services. A survey was conducted for three hundred ten users who had received location-based services via their smartphones to verify study hypotheses. Three hundred four questionnaires except problematic ones were collected. The hypotheses were verified, using a statistical method and a logical basis was presented. An empirical analysis was made on the data collected through the survey with SPSS 12.0 and SmartPLS 2.0 to verify respondents' demographic characteristics, an exploratory factor analysis and the appropriateness of the study model. As a result, it was shown that the users who had received location-based services were significantly influenced by the perceived value of their benefits, but risk related to location information did not have an effect on consumers' perceived values. Even though users perceived the risk related to personal location information while using services, it was viewed that users' perceived value had nothing to do with the use of location-based services. However, it was shown that users significantly responded to the intention of strengthening security in relation to location information risks and tended to use services continuously, strengthening positive efforts for security when their perceived values were high.

• 한국정보시스템학회지:정보시스템연구
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• 제14권3호
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• pp.17-22
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• 2005

Location management is very important in location-based services to provide services to the mobile users like banking, city guides and many more. Ubiquitous and mobile devices are the source of data in location management and its significant operations are update and search method. Some studies to improve these were presented by using optimal sequential paging, location area scheme and hierarchical database scheme. In addition, not all location services have the same access methods on data and it lead to difficulties of providing services. A proposed location management of multi-agent architecture is presented in this study. It shows the coordination of the agents on the distributed database of location-based services. The proposal focuses on the location management of the mobile object presented in a hierarchical search and update. Also, it uses a nearest neighbor technique for efficient search method of mobile objects.

• Journal of Communications and Networks
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• 제15권1호
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• pp.54-60
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• 2013

In this paper, a novel method called location-based delivery (LBD), which combines the short message service (SMS) and global position system (GPS), is proposed, and further, a realistic system for tracking a target's movement is developed. LBD reduces the number of short message transmissions while maintaining the location tracking accuracy within the acceptable range. The proposed approach, LBD, consists of three primary features: Short message format, location prediction, and dynamic threshold. The defined short message format is proprietary. Location prediction is performed by using the current location, moving speed, and bearing of the target to predict its next location. When the distance between the predicted location and the actual location exceeds a certain threshold, the target transmits a short message to the tracker to update its current location. The threshold is dynamically adjusted to maintain the location tracking accuracy and the number of short messages on the basis of the moving speed of the target. The experimental results show that LBD, indeed, outperforms other methods because it satisfactorily maintains the location tracking accuracy with relatively fewer messages.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2002년도 Proceedings of International Symposium on Remote Sensing
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• pp.157-162
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• 2002

Recently, location based services, which make use of location information of moving objects, have obtained increasingly high attention. The moving objects are time-evolving spatial objects, that is, their locations are dynamically changed as time varies. Generally, GIS server stores and manages the spatial objects, of which locations are rarely changed. The traditional GIS server, however, has a difficulty to manage the moving objects, due to the fact of locations being frequently changed and the trajectory information (past locations of moving objects) being managed. In this paper, we have designed a moving object server, which stores and manages the locations in order to support various location based services. The moving object server is composed of a location acquisition component, a location storage component, and a location query component. The contribution of this paper is that we integrate the each work for location acquisition, storage, and query into a moving objects server.

• 한국컴퓨터정보학회논문지
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• 제21권6호
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• pp.63-69
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• 2016

In this paper, we proposed the location tracking system based on MS-Based/Assisted(Mobile Station-Based and Assisted) location trigger service model with context-awareness for the intelligent location tracking of moving objects. It provides the proper resulting value that matches the context of users through the analysis about the situation of the user, physical environment, computing resource and the existing information on user input. In order to provide real-time data, we proposed the location tracking system which realizes the intelligent information such as the expecting arrival time and passing the specific area of the moving object by adopting the location trigger. So, it derives to minimize the costs of communication for the mobile object tracking applications. The proposed location tracking system based on context-awareness can be used for realtime monitoring, intelligent alarm/action, setting up of the optimized moving path, dynamic adjustment of strategies and policies. So it has the advantage to develop the application system which is aimed at optimization of the object tracking and movement.

• 한국항행학회논문지
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• 제12권1호
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• pp.15-21
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• 2008

본 논문에서는 관리대상자의 위치 및 기타 관련 정보를 위치관리시스템(LMS : Location Management System)에서 항시 감시 및 관리할 수 있는 GPS 기반 위치 인식 단말시스템 및 위치관리시스템을 구현하였다. 구현한 시스템은 PID(Personal Identification Device)의 정보를 전송하기 위한 모듈과 GPS 기반의 위치정보 수집 모듈로 구성된 위치 인식 단말장치 (Mobile HTE : Mobile Home Terminal Equipment)와 Mobile HTE에서 수신된 정보를 인터넷 망을 통하여 위치관리시스템에 전송할 수 있는 단말장치 (HTE : Home Terminal Equipment)를 구현하여 관리대상자의 위치를 관리할 수 있는 위치관리시스템을 설계 하였다.

• 한국지리정보학회지
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• 제8권4호
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• pp.143-154
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• 2005

이 논문은 유비쿼터스화된 도시에서 건물 및 상점, 도로표지판 등에 부착된 RFID 태그를 이용한 위치정보를 획득하는 방법과, 이를 이용하여 위치기반 서비스를 실시할 수 있는 응용 시스템 및 이의 방안을 제시하고 있다. 기존의 GPS를 이용한 위치정보 획득은 신호를 보내는 인공위성의 지리적 변화에 의하여 정확도가 떨어지거나, 건물에 의한 음영지역, 실내, 지하 등과 같이 지역적 문제로 인하여 위치정보를 주지 못하는 경우가 있다. 그러므로 이 논문은 도시 인프라에 부착된 RFID 등에 위치정보를 식별할 수 있는 위치정보 식별자를 적용한 ULID(universal location identifier)를 제안하며 이를 이용한 위치정보 획득과 처리 방안을 제시한다. 제안된 ULID는 기존의 GPS 및 무선 네트워크를 사용할 때 발생할 수 있는 상기의 문제점을 해결하고, 태그를 통해 즉각적인 위치정보의 획득이 가능해 짐으로 현재 이동통신사에서 제공하고 있는 위치정보 게이트웨이 접근에 대한 비용을 지불하지 않는 장점이 있다.