• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.19 no.2
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• pp.229-236
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• 2019

IOT middleware is required to play a pivotal role in interpreting, managing, and controlling data information of Internet devices (sensors, etc.). In particular, the root industry has different process flows for different industries, and there are various data processing requirements for each company. Therefore, a general purpose IOT middleware is needed to accommodate this. The IOT middleware structure proposed by this paper is a plug-in that can be used as an engine part for middleware basic processes such as communication, data collection, processing and service linkage, We propose a flexible and effective smart process for root industry. In addition, we propose a method to strengthen prevention and security against tampering, deodorization, etc. through encryption of network data between middleware plug - in and related service layer. We propose a system that will be developed as an IOT middleware platform that is specialized in the root industry so that it can be extended in various network protocols such as MQTT, COAP, XAMP.

• Proceedings of the Korean Information Science Society Conference
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• 2007.06b
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• pp.385-389
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• 2007

본 논문에서는 재난 구조 로봇의 목적을 수행하기 위한 Situation-aware Middleware 에 대해서 설명한다. 재난 구조 로봇은 정확한 정황인지와 빠른 정보 처리 능력이 필요하다. 하지만 실시간으로 수집되는 센서의 정보들은 재난 구조 로봇과 같은 인명 구조나 재해 수습을 위한 특정 목적을 수행하기 위해 설계된 지능형 로봇은 센서 정보의 시간과 무분별한 정보는 선별하여 수집해야 긴급 상황에서 효율적으로 대처 할 수 있다. 따라서 이 논문에서는 Q-MAR(QoS-Mission-Action-Resource)모델을 참조 하여, 특정 목적에 맞는 정황 정보들을 선별 수집 융합 하는 새로운 Goal-driven Situation-Aware Middleware(GDSAM)를 제안하여 이 문제를 해결 하고자 한다.

• IEMEK Journal of Embedded Systems and Applications
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• v.6 no.2
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• pp.86-92
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• 2011

In this paper, we proposed a level 2 middleware with common services for controlling steel plants, which is named POSMOS. POSMOS supports eight middleware services currently, but, this paper described in detail two representative services of the common services: file service and external communication service and their respective measured performance. In the experiment section, we described the performance of the two representative services and a case using our middleware which shows better response time than the existing commercial middleware by about 32%.

• Journal of KIISE
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• v.44 no.5
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• pp.449-459
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• 2017

Data Distribution Service (DDS) is a communication middleware that supports a flexible, scalable and real-time communication capability. This paper describes several techniques to improve the performance of DDS middleware. Detailed events for the internal behavior of the middleware are defined. A DDS message is disassembled into several submessages of independent, meaningful units for event-driven structuring in order to reduce the processing complexity. The proposed technique of history cache management is also described. It utilizes the fact that status access and random access to the history cache occur more frequently in the DDS. These methods have been implemented in the EchoDDS, the DDS implementation developed by our team, and it showed improved performance.

• Journal of the Korea Society of Computer and Information
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• v.24 no.2
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• pp.95-101
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• 2019

Sensor application systems for remote monitoring and control are required, such as the establishment of databases and IoT service servers, to process data being transmitted and received through radio communication modules, controllers and gateways. This paper designs and implements database server, IoT service server, data processing middleware and IoT management system for IoT based services based on the controllers, communication modules and gateway middleware platform developed. For this, we firstly define the specification of the data packet and control code for the information classification of the sensor application system, and also design and implement the database as a separate server for data protection and efficient management. In addition, we design and implement the IoT management system so that functions such as status information verification, control and modification of operating environment information of remote sensor application systems are carried out. The implemented system can lead to efficient operation and reduced management costs of sensor application systems through site status analysis, setting operational information, and remote control and management.

• 제어로봇시스템학회:학술대회논문집
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• 2004.08a
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• pp.1936-1939
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• 2004

This paper proposes streaming layer for personal robot's middleware. Under assumption that robot has open architecture, i.e. consists of modules created by different vendors and intercommunication between these modules is necessary, we have to consider that there are many different network interfaces. To make communication between modules possible it is necessary to develop new type of middleware. Such middleware has to support different platforms, i.e. OS, network interface, hardware, etc. In addition, it is necessary to implement effective interface between network and application in order to manage inter application communications and use network resources more effectively. Streaming layer is such interface that implements necessary functionality together with simplicity and portability. Streaming layer provides high level of abstraction and makes communication between distributed applications transparent as if are located in same module. With possibility of extension by user defined application interfaces it is suitable for distributed environments, i.e. module based architecture including small-embedded systems like as DSP board. To verify the proposed streaming layer structure it is implemented using C and tested.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.06a
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• pp.351-353
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• 2007

Recently, the research trend and developmental tendency of ubiquitous computing technology are advancing with direction which seamlessly provides the optimum service to users through context-aware, analogy and networking with various sensor nodes. There is overwhelming needs to develop the WSN middleware platforms that have the functions dealing with data, monitoring, merged communication environments, and mutual compatibility with a variety of sensor networks. The purpose of study in WSN middleware platforms is to promptly provide the response for diverse queries from application services. Therefore, the actuator is enable to do action according to evets in for large scale glasshouse.

• Journal of the Korea Society of Computer and Information
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• v.20 no.9
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• pp.97-104
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• 2015

Recently, the need for real-time systems which are providing various types of information that occur in large quantities in IoT environment is increasing. In this paper, we propose a middleware system which can monitor in real time on a web environment. The proposed system is designed to be integrated by using communication functions provided by a network operating system and external sensors. The proposed system is compared with an existing system and analysed by the server performance testing tool.

• Proceedings of the KAIS Fall Conference
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• 2009.12a
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• pp.461-465
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• 2009

Normally, a distributed computing environment is flexible in controlling complex embedded systems but their software components are becoming complex as these systems are equipped with several platforms and attached to various electronic devices, sensors, and actuators. These systems requires inter-object communication mechanisms to provide fault tolerant and QoS-enabled middleware service support in a distributed system. Generally, a middleware performs analysis of the parameters to ensure the availability and reliability of data dissemination. This paper focuses in particular to designing an application middleware for the specific scenario to improve the high availability and fault tolerance of data thus improving the QoS (Quality of Service) of a distributed system. The performance of an adaptive and highly reliable middleware can be significant based on the selection of vital parameters of the system.

• Journal of the Korea Society of Computer and Information
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• v.21 no.10
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• pp.99-105
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• 2016

The active rule system is a key element of the rule-based mobile agent middleware system for activeness and autonomy of the sensor network. The rule manager, which is the main components of active rule based mobile agent framework and active rule system, performs the control and management of the rule-related processes. In this paper, we design and implement the roles and functions of the rule manager in detail. The proposed rule manager plays an important role in the sensor network environment. The sensor data server loads the active rule on the mobile agent by the rule manager according to the situations, and the mobile agent migrates to the destination node and performs the designated action. This active rule-based mobile agent middleware system presents the usefulness for the various sensor network applications. Through the rule execution experiment using the rule-based mobile agent, we show the adaptability and applicability of rule-based mobile agent middleware system to the dynamic environmental changes in sensor networks.