• Journal of Internet Computing and Services
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• v.13 no.5
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• pp.93-104
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• 2012

Significant advancements in technology enhanced the reliability of navigation systems that are in use today. The GPS is the most widely used technique for satellite-based location estimation. However, systems based on GPS can only be accurate in providing location data when there is a clear view of the satellites. This paper proposes a self-contained navigation system that does not depend on any tracking infrastructure. Using the built-in sensors of a smartphone and a self-contained map, we implemented an accurate car locator. Evaluation results show that our proposed system outperforms GPS in providing accurate car location assistance.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.65 no.12
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• pp.2211-2217
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• 2016

The Locator/Identifier Separation Protocol (LISP) is a new routing architecture that implements a new semantic for IP addressing. It enables the separation of IP addresses into two new numbering spaces: Endpoint Identifiers (EIDs) and Routing Locators (RLOCs). This approach will solve the issue of rapid growth of the Internet's DFZ (default-free zone). In this paper, we propose an algorithm called the Propagated-Mode Mapping System to improve the map request process of LISP-DDT.

• Journal of the Korean association of regional geographers
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• v.9 no.2
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• pp.217-231
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• 2003

The purpose of this study is to examine the characteristics of advertizing maps which were presented in one of the major daily newspapers(JoongAng Ilbo) from 1966 to 2000. The use of advertizing maps has been gradually increased year by year. Advertizing maps have appeared much frequently in spring and fall seasons, in October, and on Saturday and Wednesday. The predominance of such seasons, month, days is related to the real estate advertizement. The important categories which have been presented frequently are real estate for sale(62%), clothing sale(7%) and the image advertizement of big corporations(3%). Locator maps are preferred in the first two categories and background maps are usually used in the corporation advertizement. The symbols in the maps are different according to the custom, interest and the preference of map-producers and clients. The basic symbols for the good map, which are required in the general cartography, are scarcely shown in the advertizing maps. That is because the goal of advertizement is to appeal visually to consumers, therefore, the creativity of map-producer and the attraction of maps to draw the reader's interest are much required in the advertizing maps. It is concluded that the advertizing maps have their own values in themselves and we have to treat the journalistic cartography as a special field in cartography.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.12 no.3
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• pp.171-177
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• 2012

Network mobility support has been taken into consideration for users who have multiple terminals to enjoy the seamless connectivity. This paper proposes a network mobility support scheme in the LISP architecture. During the mobile router attachment, the EID-to-RLOC mapping database is refreshed in the map server. Furthermore, map update is developed to support smooth handoff for the mobile network. An analysis of performance is given by comparing the proposed scheme with NEMO.

• 한국정보통신설비학회:학술대회논문집
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• 2008.08a
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• pp.181-185
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• 2008

Recently, location based service(LBS) expended based on personal specialized service, however since commercialized GPS based emergency rescue service comes with shadow zone for GPS signal such as inside building, the accuracy and reliability are not guaranteed. Therefore to improve such problem, we propose an active location detecting algorithm using RFID-TAG and Yagiantenna. To track the location of RFID-TAG where signal is generated, location tracking device in which Yagi-Antenna is installed moves around. Since directed wave and reflected wave co-exist during signal reception, final signal generated location is searched by setting up multiple of locations where signal can be generated on the map and moving location tracking device along minimum length of path. The algorithm proposed in this paper was verified of its technical validity through simulator.