• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.6
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• pp.131-137
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• 2014

Service Oriented Architecture(SOA) is a flexible structure which does not affect other services even when a specific service is changed. It provides the platform with neutral interfaces independent of any others, where services are loosely coupled in a standard way. While ESB (Enterprise Service Bus) is a key technology for service-oriented architecture, few research and development for ESB has been done. In this paper, we designed and implemented the key components of ESB such as mediation service, message oriented middleware service, operation service, monitoring service, application connection service, and database connection service. The performance evaluation was done by measuring the message processing time for the number of messages with various sizes.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.29 no.4B
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• pp.424-434
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• 2004

Ubiquitous network consists of various devices using several heterogeneous protocols and requires seamless communication between devices. This paper proposes a new hierarchical event service and multiple event server architecture to implement the service under ubiquitous environment. The proposed event service classifies devices by logical and physical location to abstract the idiosyncrasy of used protocols, and reduces network load. Due to the design consideration, the proposed architecture removes transfer of duplicated event data effectively. As a result, we can guarantee the reliable event delivery. The prototype multiple event server architecture was implemented according to the proposed idea and evaluated its performance under a home network test bed.

• Journal of KIISE:Software and Applications
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• v.31 no.8
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• pp.969-979
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• 2004

Recently, large-scale enterprise information systems are commonly based on the multi-tiered middleware or frameworks to support such requirements as functional reuse, heterogeneous system resources, and multiple platforms. However, these multi-tiered or distributed multi-platform architecture incurs the interoperability issue of the components and metadata among the middleware. This paper introduces the Simple Object Application Framework (SOAF) which supports heterogeneous resources and platform-independent component-based development, with the abstract programming style of the object-oriented frameworks and the XML-SOAP based component persistence mechanism.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.10
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• pp.2129-2136
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• 2012

With the increased demand of ubiquitous home services, intelligent robots have wide attentions. This kind of robots offer various services through middleware components which can connect with remote servers. In this paper we present an UPnP(Universal Plug and Play) based open-source software framework which makes control the robots remotely. This UPnP architecture for home networking can provide various communication methodologies like command control, eventing, presentation with web services and so on. This paper shows successful implementation results on two real platforms.

• Journal of Digital Contents Society
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• v.10 no.4
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• pp.605-614
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• 2009

The software-defined radio (SDR) is a radio communication technology that can reconfigure necessary application software on a common hardware platform to deal with several kind of radio communication environment. It is necessary for a system that can control and analyze functionalities of a system in order to verify the SCA-based reconfigurable middleware platform, SCARLET that implements the SDR technology. In this paper, we propose and implement the architecture of the waveform manager that is connected with SCARLET and performs management and control functionalities. We verify the performance of the waveform manager by testing each functionality of the overall system that uses the SCARLET middleware platform.

• Journal of the Korea Institute of Military Science and Technology
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• v.8 no.4 s.23
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• pp.58-67
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• 2005

To overcome limitations of test scope, schedule and cost, M&S(Modeling & Simulation) technique has been applied for T&E(Test and Evaluation) of the state-of-art weapon systems. This paper proposes an air defense simulation software framework to reduce both redundancy an[1 programming errors in system simulator. The proposed framework consists of a 'model' and a 'middleware' The 'middleware' is a reliable communication service layer that supports not only HLA(High Level Architecture) which is an international standard in M&S but also TCP/IP, UDP and etc. The main role of 'model' is to schedule and to run the real-time distributed simulation. The proposed framework has been applied to M-SAM(Middle range Surface to Air Missile) system simulator. The proposed framework's scheduling and communication performance results are satisfactory and were measured by hardwired NTP(Network Timer Protocol) time-stamp with GPS(Global Positioning System) timer for better precision.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.11a
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• pp.256-259
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• 2012

Paperless 회의 및 행정에 대한 요구가 제기되면서 ISO 14001과 같은 표준들의 제안과 함께 이 요구에 대한 많은 연구와 구현이 제안되고 있다. 최근에는 다양한 플랫폼의 스마트 기기들의 보급이 확산됨에 따라 이 기기들의 플랫폼에 맞는 전자문서서식시스템의 요구도 높아지고 있다. 본 논문에서는 제시된 여러 연구들의 효율성 검토 결과를 기반으로 사용자 중심의 전자문서 공유 및 관리 기능을 제공하는 미들웨어의 구조를 제안한다. 제안하는 미들웨어는 Content Adaptation, 즉 File Format 및 Size Converting, 스마트기기내에서의 전자서식문서 보안 처리기능, 데이터 관리기능을 포함하는 PDF Viewer를 제공하며 최근 표준화 적용이 진행 중인 HTML5를 기반으로 하여 호환성과 적용성을 높였다. 제안된 구조와 구현방식에 대한 검증을 위해 구현 사례를 본 논문에서 제시하였다.

• Journal of the Korea Society for Simulation
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• v.20 no.4
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• pp.97-104
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• 2011

Defense M&S software industry has carried out a variety of studies related to an efficient implementation of large-scale simulation and interoperability with respect to each of the system and HLA has been developed to provide a common architecture for distributed simulation of them. HLA defines Federate interface specification and provides services through RTI. Meanwhile, the difficulty lies in developing the software based HLA. Federate developer needs to understand how to handle Metadata produced RTI and has to modify the interface code whenever FDD is modified. This paper presents the implementation method of SOM interface using the code generation technique and middleware architecture for providing simple API. It solves the problem for implementing the framework of distributed object communication by using proposed method.

• Journal of KIISE:Information Networking
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• v.36 no.5
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• pp.376-382
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• 2009

The recent growth of cable broadcast technology such as Tru2Way enables the cable service operator to provide more enhanced experiences to cable TV audience. As a result, various applications have been produced and user can easily access cable network to receive multimedia content as well as interactive application in cable environment. In order for current cable technology to be accepted as a web extended technology, a process of web based applications having a web document and multimedia resources, proper web service definition and middleware architecture for existing cable environment should be established. In this paper, we define a web application for cable environment and propose a middIeware architecture which can process web application based on Tru2Way technology

• Proceedings of the Korean Information Science Society Conference
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• 2005.07b
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• pp.394-396
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• 2005

다양한 상황(Context)들이 공존하는 유비쿼터스 컴퓨팅 환경에서는 이들 사이에 존재하는 이질성(heterogeneity)과 복잡성(complexity)을 추상화하기 위해 멀티미디어 미들웨어(Multimedia Middle-ware)가 요구된다. 또한 이러한 미들웨어를 통해 전달되는 콘텐츠는 다양한 환경 및 사용자에 맞게 리퍼포징을 수행해야 한다. 본 논문에서는 다양한 사용자에게 차세대 LBS 서비스를 위한 콘텐츠의 사용자 정보와 콘텐츠 관련 환경 정보 등을 분석, 전달하기 위한 방법론을 제안하고, 리퍼포징된 콘텐츠의 다양한 정보 분석 방법을 제공하기 위한 미들웨어 아키텍처를 설계한다.