• Journal of Advanced Navigation Technology
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• v.19 no.4
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• pp.330-337
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• 2015

A service in the environments of internet of things (IoT) exist various types with automation facilities and sensors. There can configure so many communication protocols to networking facilities and sensors. To provide efficient various kind of service, a middleware platform, is based on the internet protocol network, is needed a unified access with devices, controlling and monitoring huge kind of facilities and sensors, to provide a efficient IoT service and application configurations. In this paper, we propose a middleware that an application and service interact with automation facilities and monitor sensors. The proposed middleware is designed with adapter pattern that one of the software engineering design pattern. The adapter pattern is to ensure communication with each sensor and to make sure of service scalability. Finally, the proposed component middleware shows that variety sensors can be easily configure the service in the IoT environment.

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.22 no.12
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• pp.13-20
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• 2004

• The Magazine of the IEIE
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• v.32 no.7 s.254
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• pp.32-46
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• 2005

• Journal of Internet Computing and Services
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• v.12 no.3
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• pp.27-36
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• 2011

The sensor nodes of sensor network system are capable of wireless communication with sink nodes. They also acquire and transmit sensor data in broad region where people cannot access easily. However, the transmission of redundant data from sensor nodes reduces the lifetime of the entire system and substantial amount of resulted data needs to be resorted before implementing them to the specific applications. In this paper, the mobile agent middleware to eliminate the redundant sensor data is designed and implemented. In the proposed system, the mobile agent visits the destination sensor nodes according to the migration list offered by the meta table in the name space of the naming agent, eliminates the redundant sensor data corresponding to user condition, and acquires and transmits sensor data according to the purpose and needs. Thus, the excess transmission of the sensor data is avoided and the lifetime of the entire system can be extended. Moreover, the experiments using the mobile agent middleware with the conditions and limitations that are possible in real situation ore done to verify the successful elimination of the redundant sensor data and the efficiency of the data acquisition. Also, we show the potential applicability of the mobile agent middleware in various active sensor networks through the active rule based mobile agent middleware or the interaction with the active rule system.

• Proceedings of the Korean Information Science Society Conference
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• 2010.06a
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• pp.31-35
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• 2010

USN 환경은 다양한 센서들을 이용하여 사용자에게 보다 다양한 서비스를 제공하는 것을 목표로 한다. 이러한 USN 환경에 존재하는 센서들은 이종이며 무수한 응용들과 요구사항을 충족하기 위한 다양한 센서 네트워크들과 응용들 사이에서 동작하는 미들웨어가 반드시 필요하다. 기존의 미들웨어에서는 이기종 센서들 간의 통합에 중점을 두고, 센서데이터를 통한 정보 획득 부분은 미흡한 상태이다. 본 연구에서는 이러한 미흡한 부분인 정보 획득 부분을 센서 데이터 패턴분석을 이용한 이상치 탐색을 통하여 중요한 여러 응용에서 유용하게 제공됨을 예를 통하여 보인다.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.05a
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• pp.826-828
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• 2007

건강과 복지에 대한 사람들의 관심이 증대함에 따라 고령층 인구를 중심으로 병원에서 건강 점검 및 진료가 이루어졌던 기존의 Health산업 패러다임에서 연령층에 관계없이 언제, 어디서나 진료를 받을 수 있는 u-Health산업 패러다임으로 변화하고 있다. 이러한 흐름에 발맞추어 유비쿼터스 컴퓨팅 환경에서 혈압, 맥박, 심전도 등과 같은 의료정보뿐만 아니라 일상생활에서 획득한 정보를 통해 건강증진, 질병예방, 진료를 가능하게 하는 u-LifeCare 의료체계가 필요하다. u-LifeCare 를 지원하는 미들웨어는 유비쿼터스 환경에서 필수적인 기술 요소인 센서 네트워크 미들웨어와 상황인지 미들웨어를 통합하는 미들웨어이며, 라이프케어의 특성을 고려한 '초경량(LightWeight)의, 확장성(Scalability)있는, 보안성(Security)을 갖춘' 미들웨어이다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.33 no.1A
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• pp.67-73
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• 2008

Our research is aimed at developing an architectural frame-work of USN sensor network discovery service systems. The research is fo-cused on the four areas a survey of USN technology, development of a USN software model, development of the design space of the USN sensor network discovery service, and finally the architectural framework of the USN sensor network dicovery service. The survey of the USN technology is conducted on four technological visions that contain USN system technology, USN networking technology, and USN middleware along with the service platform, With respect to each technological division, domestic and worldwide leading research projects are primarily explored with their technical features and research projects are primarily explored with their technical features and research output To provide a means to analyze sensor network discovery services, we devel-oped the design space of the sensor network discovery services by exploring the scalability with respect to query scope, lookup performance, and resolution network.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.10a
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• pp.453-456
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• 2007

In this paper, we describes a design of Wireless Mesh Network based middleware that applied into USN(Ubiquitous Sensor Networks). WMN based middleware is a technique which links data between widely distributed sensor devices and WMN for context-awareness. The use of WMN base middleware in this paper makes possible communication on insufficiently network constructed area by use of WMN. WMN based middleware also anaylze events comprehensively that originated from specific sensor device. Based on the result from analyzed data with predetermined value WMN based middleware will given an order to designated actuator devices. Middleware operate each function of sensor network management and application service separately.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.11 no.4
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• pp.648-655
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• 2007

Nowadays, to realize ubiquitous computing environment, many research activities have been going on within various kinds of research domains including automatic identification sensor network, home network, telematics and so on. Especially, RFID middleware that supports the aggregation of RFID tag data, control and management, and the integration with legacy systems has recently gained a lot of attention. Meanwhile, EPCglobal defined an ALE(Application Level Events) standard specification, which exists between RFID readers and applications, and substitutes the previous systems called Savant. In the specification internal structures and implementation technologies of ALE are not mentioned and only external interfaces are defined. This approach easies the verification of standard compliance and inter-operability of the layer. In this paper, we present the design of ALE-compliant RFID middleware systems that process RFID tag data efficiently.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.4
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• pp.797-804
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• 2009

Recently, To provide various service for user, there are some trends to construct health care system using bio-sensors and wireless network technologies. Accordingly, An effective middleware is needed to manage and control the various bio-sensors. Also, it is important to extend network and interoperate the various application system in healthcare service. In this paper, we propose to be connected with network based on UPnP by design and implementation of UPnP-ZigBee bridge. The proposed UPnP-ZigBee bridge manage and control ZigBee sensor module effectively. we implemented and tested ECG, PPG, and environment sensor module based on ZigBee wireless network to apply in health care service.