• The KIPS Transactions:PartA
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• v.13A no.7 s.104
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• pp.561-572
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• 2006

Performance of the mobile devices greatly depends on the efficient resource management because they are usually resource-restricted. In particular, the dynamic storage allocation algorithms very important part of the mobile device's operating system and OS-like software platform. The existing dynamic storage allocation algorithms did not consider application's execution style and the type, life-time, and characteristics of memory objects that the application uses. Those algorithms, as a result, could not manage memory efficiently Therefore, this Paper analyzes the mobile application's execution characteristics and proposes anew dynamic storage allocation algorithm which saves the memory space and improves mobile application's execution speed. The test result shows that the proposed algorithm works 6.5 times faster than the linked-list algorithm[11], 2.5 times faster better than the Doug. Lea's algorithm[12] and 10.5 times faster than the Brent algorithm[14].

• Proceedings of the Korean Information Science Society Conference
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• 2005.11a
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• pp.505-507
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• 2005

현재 많은 PVR SetTop Box가 시중에 나와있는데 그 가격은 만만치가 않다. 또한 가장 많이 보편화 되어 있는 모바일 폰 역시 그 기능은 다양화 되어 있다. 이러한 요소들을 종합하여 가장 실용적이고 저렴한 가격의 시스템을 구축하는데 그 의미가 있다. 본 논문은 저렴한 TV수신카드를 이용한 리눅스 기반의 PVR시스템 구현과 자바 플랫폼을 이용한 서버구현, 그리고 WIPI-Emulator를 이용한 모바일 폰의 구현으로 원격지에서 PVR의 제어와 예약녹화 기능을 구현하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• v.2
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• pp.83-86
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• 2006

모바일 플랫폼이 WIPI라는 표준 플랫폼으로 2004년 2월 WIP2.0으로 규격화되어 컨텐츠 개발 시간 및 비용의 최소화와 빠른 단말기 개발 공정으로 원활한 단말기 공급 그리고 1회의 컨텐츠 개발로 모든 이동 통신 사업자에 공급등 여러 가지 측면에서 장점을 가지게 되었다. 이러한 WIPI의 우수성을 우리가 직접 사용해 눈으로 확인 해보기 위해 모바일 컨텐츠 중에서 가장 활발하게 개발되고 있는 게임을 제작해 보았다.

• Proceedings of the Korea Contents Association Conference
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• 2005.05a
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• pp.452-457
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• 2005

It is the mobile platform that has held important position in wireless internet contents service using mobile phone terminal so far. There have been a variety of mobile platforms developed by several mobile service providers for their purpose and convenience. In this paper, in addition to the merits and demerits analysis and comparison between each platform, the WIPI is introduced and reviewed as a Korean standard wireless internet platform in terms of technology.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.11a
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• pp.451-454
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• 2006

2005년 7월 대한민국의 휴대폰 사용자는 전인구의 75%, 약 3천5백만 이상이 사용되고 있어 무선 인터넷을 기반으로 하는 휴대폰이 유비쿼터스 시대의 새로운 패러다임으로 각광을 받고 있다. 또한 휴대폰 하드웨어와 디자인 등은 세계적인 인프라가 구축되었다. 하지만 휴대폰 콘텐츠는 완전히 초기단계를 벗어나지 못하고 벨소리, 초기화면 치장 등에 불과하다. 특히 동영상 서비스는 새로운 시장을 창출했기 보다는 답보 상태에 있어 남들이 쉽게 모방할 수 없는 엔진 개발이 절실히 필요하다. 본 논문은 휴대폰 사용자의 사랑과 따듯한 마음으로 분류된 화면에 따라 사용자가 문구를 선택하거나 입력 시키면 동화상과 함께 문구를 상대방에게 전송할 수 있는 시스템을 설계하고 구현했다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.10 no.1
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• pp.107-112
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• 2010

In this paper, we design and implement the contents transferring the location information between a customer and a proxy driver by utilizing 'WIPI.' Customers are able to request a call-service through a client in order to call a proxy driver. And, once a proxy driver who is most adjacent to the customer accepts the order of a call-service from him or her through a location-management server using the concepts of LBS and GPS, 'WIPI' sends the information about the location of the customer to the driver, and also sends information to the custome by calculating the distance from the driver to the customer. This content was modeled based on how information is transferred between a customer and a proxy driver under the mobile circumstance, and also a server and a client, made up from JAVA, were modeled by using SKT emulator.

• Journal of Korea Multimedia Society
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• v.10 no.7
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• pp.934-943
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• 2007

This paper presents a real-time fire simulation on the mobile phone using stable fluid animation techniques. Stable and fast fluid simulation methods are developed in PC and console games, but fluid simulation and interactive fluid models require too much system resources for applying on mobile environment. We studied and implemented physics-based models for fluids like fire and smoke effects using billboard and stable fluids simulation method on mobile 3D system. The mobile platform of our system is WIPI, which is the standard mobile platform in Korea, also we adopted NF3D API for our 3D programming API. We implemented real-time fire simulation and added it in mobile 3D game, "Rupee Story".

• The Journal of Korean Institute of Communications and Information Sciences
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• v.35 no.4B
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• pp.599-609
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• 2010

Korean government has recently abrogated WIPI policy to open domestic mobile phone market to the world, which may result in the influx of foreign smart phones. This circumstance has given users more wide range of choices to buy a product and also has brought benefit to buy mobile phone cheaply. On the other hands, this change might have brought potential danger of mobile malware incidents which have only occurred in foreign countries. There are standardized analysis methods and response guides for computer malwares, not but for mobile malwares in our country. In this paper, we introduce existing mobile malwares and available tools for their analysis. Considering domestic circumstances which might not be properly protected against mobile malwares, we propose analysis methods and response guide of mobile malwares.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.34 no.4A
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• pp.309-315
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• 2009

Wireless Ad-hoc networks are dynamic networks that consist of mobile nodes. Nodes in Ad-hoc networks are usually laptops, PDAs or mobile phones. These devices feature Bluetooth and/or IEEE 802.11 (WiFi) network interfaces and communicate in a decentralized manner. Due to characteristics of Ad-hoc networks, Mobility is a key feature of routing protocol design. In this paper, we present an enhanced routing maintenance scheme that cope with topology changes pre-actively. The key feature of the proposed scheme is to switch next-hop node to alternative neighbor node before link breakage for preventing route failure. From extensive experiments by using NS2, the performance of the proposed scheme has been improved by comparison to AODV protocol.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2004.04a
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• pp.379-383
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• 2004

Mobile Internet has different platform cause interrupt activation of mobile internet because contents providers have each different development environment. To use of WIPI(Wireless Internet Platform for Interoperability) developer by KWISF(Korea Wireless Internet Standard Forum) founded to solve this problem guarantee independence of hardware and interpretation of mobile application. In this paper, we research method to activate WIPI which is standard platform to develop applications easily and efficiently in mobile environment and we implement WIPI application to show the excellent of WIPI in mobile development environment.