• Proceedings of the Korea Information Processing Society Conference
• /
• 2014.11a
• /
• pp.703-706
• /
• 2014

AUOTSAR(Automotive Open system Architecture)는 자동차 ECU(Electronic Control Unit) 에 내장되는 소프트웨어에 대한 표준 구조로서, ECU 소프트웨어의 품질 향상은 물론, 개발 및 관리 비용의 절감에 기여하는 등 많은 장점을 갖는다. AUTOSAR 의 이런 장점 때문에 많은 자동차 회사들이 ECU 소프트웨어에 AUTOSAR 적용을 추진하고 있다. 이에 따라 기존 레거시 ECU 소프트웨어 시스템을 AUTOSAR 표준에 맞는 ECU 소프트웨어 시스템으로 변환하는 방법에 대한 관심도 높아지고 있다. 그 이유는 이미 많은 ECU 레거시 소프트웨어 시스템들이 개발되어 사용되고 있으며, 이들에게는 이미 기능 및 안정성 검증을 위하여 많은 시간과 비용이 투자하여 되어 있다. 따라서 ECU 소프트웨어 시스템에 AUTOSAR 를 적용하는 경우 기존의 레거시 소프트웨어 시스템을 재사용할 수 있으면 생산성 및 품질 면에서 많은 장점을 갖는다. 본 연구에서는 C 언어로 작성된 기존의 ECU 소프트웨어 시스템을 AUTOSAR 플랫폼에서 재사용할 수 있도록 하기 위하여, 기존의 레거시 ECU 소프트웨어 시스템을 AUTOSAR 플랫폼으로 마이그레이션하는 방법에 대하여 연구하였다. 마이그레이션 과정은 크게 두 단계로 나누어 지는데, 이는 레거시 소프트웨어 시스템을 분석하여 마이그레이션이 가능하도록 기능별로 분해하는 것과, 분해된 구성 요소들을 AUTOSAR 플랫폼에 맞는 구조로 재구성하는 과정이다. 본 논문에서는 이중 첫 번째 과정인 레거시 소프트웨어 시스템의 분석 및 기능별 분해 방법을 제시하고자 한다.

• The KIPS Transactions:PartD
• /
• v.14D no.7
• /
• pp.763-772
• /
• 2007

Due to increased software development cost, interest about the method and automated tool for reusing legacy system have been running high. Therefore, In this study, it proves the definition, concept and also background of legacy system by showing real market and technology trend. Automation tool is designed and developed to handle the concrete development methodology, procedure and reference. Also, we implemented the process that analyze the legacy system and extract, refine, store and reuse the candidate components by using LM(Legacy to Modern System) supporting tool presented in this paper. If LM supporting tool is applied to legacy system migration, we can expect cutting costs, shortening the developing period and succeeding the intellectual property by software re-engineering.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.8 no.6
• /
• pp.1428-1442
• /
• 2007

Nowadays, as IT environment is changing rapidly, traditional infra system such as hardware, software, and development methodology are changing as well. Legacy system has been filled with Intellectual property such as invested budget and development period for the time of IT is developing. Many countries around the world are having troubles with how to manage the legacy system. It is time to study on a development method and the implementation of supporting tool to reuse or process the legacy system. In this paper, it proves the definition, concept and also background of legacy system by showing real market and technology trend. Developed to handle the concrete development methodology, procedure and reference. We can get more profitability and productivity advance by reuse of legacy system and maintenance cost-saving through legacy migration.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2014.05a
• /
• pp.280-283
• /
• 2014

Cloud Computing virtualizes logical resources like cpu, memory and disks etcs from physical machines. This virtualization technology increases computing resource utilization and supports dynamic resource allocations. Because of these benefits, global cloud computing services like Amazon AWS, Google Cloud and Apple iCloud are prevalent. With this cloud Computing services, there has been a request about cloud migration between different cloud environments. If one service which operates in a cloud computing environment wants to migrate to another cloud environment, there should have been a compitability between two different cloud environment. but even global cloud computing services do not support this compitability. In this paper, we suggest a process and technology to cloud migrations based on open sources.

• The KIPS Transactions:PartD
• /
• v.16D no.4
• /
• pp.583-594
• /
• 2009

Most of the SOA solutions applicable to businesses and organizations are taking a top-down methodology. It starts with an analysis of an organization's requirements, followed by definition of business models and identification of candidate services and ends with finding or developing required services. Challenges in adopting SOA while abandoning legacy systems involve time and cost required during the process. Many businesses and organizations want to gradually migrate into SOA while making the most of the existing system. In this paper, we propose A Method for Migration of Legacy System into Web Service(M-LSWS); it allows legacy system to be migrated into web service accessible by SOA and be used as data repositories. M-LSWS defines procedures for migration into reusable web services through analysis of business processes and identification of candidate services based on design specification and code of legacy system. M-LSWS aims to migrate of legacy system into web service appropriate for SOA. The proposed method consists of four steps: analysis of legacy system, elicitation of reusable service and its specification, service wrapping and service registration. Each step has its own process and guideline. The eligibility of the proposed method will be tested by applying the method to book management system.

• Information Systems Review
• /
• v.10 no.2
• /
• pp.309-327
• /
• 2008

This research is a byproduct of a project initiated by a major airport in Korea. The airport aimed to enhance airside safety and weighed a few IT options that may strengthen its current safety practices. In order to satisfy requirements unique to the airport and to inherit existing legacy systems, a PCS-based mobile database system was proposed. We first discuss technical aspects of the system as well as design issues in mobile systems before we compare two specific alternatives for transactional service handoff. A simulation study comparing two types of coordination follows before we present a scheme that manages transaction processing and locating service in mobile environments. Finally, we discuss the limitations of the scheme from the perspectives of the airport in question along with other research issues.