• Journal of the Korean Society for Precision Engineering
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• v.24 no.6
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• pp.23-30
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• 2007

• IEMEK Journal of Embedded Systems and Applications
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• v.1 no.2
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• pp.56-63
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• 2006

In this paper, we propose the integrated security management framework supporting the trust for the ubiquitous environments. The proposed framework provides the gathering and analysis of the security related information including the location of mobile device and then dynamically configures the security policy and adopts them. More specially, it supports the authentication and delegation service to support the trusted security management for the ubiquitous networks. This system also provides the visible management tools to give the convenient view for network administrator.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.31 no.9B
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• pp.821-828
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• 2006

In this paper, we introduce a concrete, practical Ubiquitous Organizational Information (UOI) service framework, providing novice users intelligent and useful services respecting the environment. The UOI framework consists of hierarchical network architecture and is based on distributed sensor networks. To provide a rich array of services, the modular software framework and foundation software is designed. The UOI framework and foundation software is implemented on our hardware prototype. We define three representative UOI services and illustrate each service flow operating in our UOI network. In addition, we describe some details in the implementation of a distributed UOI network on the UOI test-bed.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.46 no.2
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• pp.81-88
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• 2009

This paper proposed a session key exchange and authentication scheme on non-interactive key distribution algorithm using a community member's ID in ubiquitous networks. In ubiquitous network environment, User's context-awareness information is collected and used to provide a context-awareness service for someone who need it. However, in ubiquitous network environment, this kind of the Context-awareness information could be abused by a malicious nodes. The proposed scheme using the community member ID provides a session key exchange and mutual authentication between community members, and supports secure data communication. Also, when exchanging the session key and authenticating each other, this scheme reduces communication overhead and authentication delay compared to the AAA server scheme.

• Journal of the Korea Society of Computer and Information
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• v.15 no.12
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• pp.151-162
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• 2010

In order to build up the ubiquitous computer environment, there are many researches on automatic identification, sensor networks, and home networks etc. EPCIS (EPC Information Services), which is proposed by EPCglobal, is a standard on the repository managing tag data that is needed to develop RFID application system. In this paper, the EPCIS repository is designed and implemented. It is able to search the object dependent upon general object recognition and environment information variation. And sensor data, which is also massive data and is changed with position, is integrated into RFID data in the system. By doing so, it is possible to do the convergence managements of object recognition with variations of USN (Ubiquitous Sensor Network) environment.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.33 no.5B
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• pp.275-284
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• 2008

In this paper we design and implement a management framework base on JMX to control and manage ubiquitous home networks. To do this, we organize the ubiquitous home network test-bed that consists of information electronics and sensor devices. In the test-bed network, we implement the management framework which can control and manage various applications and devices in home network environment. In addition, it can also define and add new services easily. Moreover, it is possible to provide various management interfaces with multi-protocols. The framework is formed to integrate legacy management systems readily.

• Journal of Korea Society of Digital Industry and Information Management
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• v.9 no.1
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• pp.119-128
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• 2013

The spotlight is thrown on the ubiquitous technology these days, and diverse management technologies are proposed to efficiently manage the networks in the ubiquitous environment. Because each network has its unique management technology, the integrated management of complex networks is a very difficult challenge. In this paper, an integrated network management methodology is proposed to ensure the efficient management of different networks using ontology. Although the proposed integrated network management methodology is quite simple, the definition of this methodology is essential for the integrated network management. Using the $Prot\acute{e}g\acute{e}$ to Ontology development, the terms for the integrated network management were defined, along with the OWL and relevant rules, and several methods were implemented according to the proposed methodology. The process in this paper is considered essential for the network expansion and multiple network management.

• 한국정보통신설비학회:학술대회논문집
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• 2008.08a
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• pp.63-68
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• 2008

In now days, Ubiquitous technology grow up, so the variety service are developed. Sensor networks purpose is collection information about environment and geographic. But sensor network has limit in power, cost and so on. There is much restriction. Some sensor networks purpose is monitoring environment. And there is some relation in sensing data. Sensor nodes sense information by periods. First sensing data correlate with next sensing data. At this point, this paper suggest power saving method. Some data are same, the other data are similar.

• Journal of Advanced Information Technology and Convergence
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• v.10 no.2
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• pp.73-81
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• 2020

The number of mobile devices roaming into a ubiquitous city (u-city) continues to rise as wireless systems have been widely deployed. The number of mobile devices also varies with time, and they tend to frequently change their locations. In addition, the available wireless access networks may belong to different domains, administrations, management, and internet service providers (ISPs). A fusion of overlapping heterogeneous wireless access networks (e.g., WiMax, Wi-Fi, LTE, etc.) serves the u-city in order to reach different coverage. In this context, technical challenges arise in mobility management for heterogeneous networks to realize their potential coverage and capacity benefits. This paper deals with the analysis of a decentralized mobility management support for u-City wireless network infrastructure. This scheme takes advantage of the features of the fully-distributed model of networked-based mobility management protocol to alleviate and realize the ubiquitous requirements of a u-City.

• Journal of KIISE:Computing Practices and Letters
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• v.14 no.9
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• pp.864-875
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• 2008

The advent of the ubiquitous environments, the sub-networks is various to offer ubiquitous environments. There are diversify sub-networks such as Jini, UPnP, DPWS. To realize ubiquitous, any users can discovery and services in any sub-networks. However, they cannot support these requirement, because they don't do interoperability with other networks. In this paper, we introduce a Jini adaptor of WSUN(Web Services on Universal Networks). The WSUN is the framework which supports interoperability through the intermediation of Web services. The Jini adaptor has there roles: Lookup Service, Jini Client, Web Service Client. It converts Jini services to Web services and registers them. to UDDI registry. In addition the Jini adaptor process the events which happening in Jini system then that is utilized when another sub-network client search a service. Because the adaptor updates a service status continuously, it is possible that provides a service discovery and use to apply the status information. In conclusion, a Jini client is able to find and use a service which exists in heterogeneous sub-network through the Jini adaptor.