• Journal of the Institute of Electronics and Information Engineers
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• v.53 no.1
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• pp.3-8
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• 2016

Wireless networks have evolved to the appearance of heterogeneous wireless networks(HetNet), where various networks provide data services with various data rates and coverage. One of technical issues for HetNet is efficient utilization of radio resources for system performance enhancement. For the next generation wireless networks, energy saving has become one of key performance indices, so energy-efficient resource management schemes for HetNet need to be developed. This paper addresses an energy-efficient scheduling for HetNet in order to improve the energy efficiency while maintaining similar system throughput as existing scheme, for which an energy-efficient scheduling that energy efficiency factor is included. Simulation results show that the proposed scheme achieves the reduction of energy consumption while admitting limited ragne of throughput degradation in comparison with the conventional proportional fair scheduling.

• Journal of the Korea Institute of Military Science and Technology
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• v.18 no.3
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• pp.260-266
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• 2015

The warship is run based on the combat system which shares tactical information collected by target detection systems and navigation devices across a network, and conducts the command and control of weapons from target detection to kill assessment. The short-range air defense missile system defends a warship from anti-ship missiles, aircraft, helicopter and other threats in order to contribute to the survival of a warship and the success of missions. The short-range air defense missile system is applied to a various combat systems. In this paper, we have proposed the interface design between the short-range air defense missile and dissimilar combat systems. To employ the short-range air defense missile at dissimilar combat systems, each system is driven by independent processor, and the tasks which are performed by each system are assigned. The information created by them is exchanged through the interface, and the flow of messages is designed.

• The KIPS Transactions:PartC
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• v.10C no.5
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• pp.565-574
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• 2003

This paper implements an intrusion detection message exchange protocol library (IDMEPL) for SDMS-RTIR, which Korea Information Security Agency (KISA) has developed to hierarchically detect and respond to network vulnerability scan attacks. The IDMEPL, based on the IDMEF and the IAP of the IDWG, enables SDMS-RTIR to interact with other intrusion detection systems (IDS) in realtime, and supports the TLS protocol to prevent security threats in exchanging messages between its server and its agents. Especially, with the protocol selection stage, the IDMEPL can support various protocols such as the IDXP besides the IAP. Furthermore, it can allow for agents to choose an appropriate security protocol for their own network, achieving security stronger than mutual authentication. With the IDMEPL, SDMS-RTIR can receive massive intrusion detection messages from heterogeneous IDSes in large-scale networks and analyze them.

• Journal of Digital Convergence
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• v.17 no.11
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• pp.183-188
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• 2019

As social perceptions of pets change, cultural attitudes toward pets are becoming more friendly. In particular, dogs have been living familiarly and closely with humans for a long time. In the changing times, various services are being used to improve the understanding of dogs and to prevent companion dogs and increase awareness of respect for life. Therefore, in this paper, we implemented a smart lead line in which IoT service and application technology are linked to the walking dog's automatic lead line. To do this, we developed a smart dog lead line by designing and implementing an integrated module in connection with heterogeneous sensors and linking it with a dog lead line. Finally, a smart dog lead line was used to collect the dog's biological signals in real time, identify the location of the dog, and provide a notification system. Through this, we believe that the culture of dog culture can be further grown.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.43 no.7 s.349
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• pp.50-59
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• 2006

The new communication paradigm is rapidly shifted from wireless mobile networks to an All-IP(Internet Protocol) network, led by service industry leaders and communication manufacturers. In this paradigm, providing authentication and session keys of a subscriber becomes one of the critical tasks because of IP open accessibility among heterogeneous networks. In this paper, we introduce authentication process procedure of heterogeneous wireless mobile networks and develop so-called IMAS(Integrated Mobile Authentication Server) which can securely inter-work among all mobile networks and support the legacy networks with backward compatibility. Especially, in designing IMAS, mobile authentication inter-working mechanism, key management technique, and other issues to be overcome are presented. We analyze and evaluate the performance of authentication algorithm which creates session key. A simulation environment of IMAS is established, and a performance(TPS; Transaction Per Second) result is analyzed and evaluated. It turned out that IMAS works among heterogeneous wireless mobile networks without compensating efficiency and functionalities of the legacy networks and decrease the entropy of data redundancy and data inconsistency among networks because of the integrity of the distributed Data Base(DB).

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.8
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• pp.1625-1630
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• 2012

At this present, there's not made up of communication linking smoothly between the equipment for heterogenous. They are not decided a standardized communication method. The necessity for interlock with various wireless connection is raising its head. And user's terminal is developing with multiplex interface through them to use constant service. This paper study on the algorithm of the wireless heterogenous networks. It's a terminal which have the technology for wireless access about mobility of seperating link technique.

• Proceedings of the Korean Information Science Society Conference
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• 2003.04c
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• pp.16-18
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• 2003

웹서비스는 개방성.호환성.재활용성.유연성등 이기종 시스템간의 호환성이 뛰어나 분산연동을 위한 차세대 대안책으로 급부상하고 있다. 또한, XML을 기반으로하여 개발언어나 플랫폼에 종속되지 않고 다수의 개발업체가 참여하여 핵심 표준(SOAP, WSDL, UDDI)이 폭넓게 수용되고 채택돼 동적인 연동을 통한 분산 서비스를 지원한다. 그러나, 실제적으로는 요청체계에서 서비스 서버의 고정화로 인해 동적인 연동이 제한을 받는다는 것은 주지의 사실이다. 본고에서는 고정된 지원서버의 서비스제공이 불가한 경우에서도 유사도 개념을 도입한 UDDI의 유사 시스템을 제공할 수 있는 지능형 동적바인딩을 제안한다.

• The KIPS Transactions:PartC
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• v.15C no.6
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• pp.481-492
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• 2008

With the advancement of the Internet and networks, the combination of wired/wireless technologies is spreading rapidly since it enables the creation of new services and provides new features to both users and service providers. In such wired/wireless integrated services, network integration is very important because such systems are integrated by a linkage between heterogeneous networks and they involve an integration of transmission technologies across networks. In this situation, existing security and communication technologies are unsuitable since the network are integrated with heterogeneous networks. The network may also have several security vulnerability. Also, form of service that users offer will be service for roaming user. In these service, we must provide fast authentication and security at roaming. Therefore in this paper we proposed roaming and AAA mechanism in heterogeneous network environment. Our system provides secure communication and efficiency.

• Proceedings of the Korean Information Science Society Conference
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• 2006.10d
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• pp.426-430
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• 2006

홈 네트워크 관련 기술들 중 여러 종류의 홈 네트워크 미들웨어간 상호연동의 지원 및 서비스 배포 등의 문제를 해결하기 위한 환경을 제공하는 OSGi에 대한 관심이 높아지고 있다. 그러나, 현 OSGi 시스템은 이웃 OSGi 시스템간, 그리고 이기종 시스템간에 분산 컴퓨팅을 지원하지 않아 그 활용 범위가 제약 된다. 따라서 본 논문에서는 외부 시스템이 가지는 서비스에 대한 투명한 접근이 가능하고, 로컬 시스템에 존재하는 다른 번들에 대한 접근에 동일한 접근 방법을 가지도록 하기 위하여, 웹 서비스를 이용하는 확장 레지스트리를 제안한다. 이를 통해 이웃 OSGi 시스템들 뿐만 아니라 이 기종 시스템과도 연동을 할 수 있으며, 현재 OSGi 시스템이 가지는 기능성에 분산 컴퓨팅능력의 확장을 통해 OSGi 시스템의 활용 범위를 크게 늘릴 수 있다.

• Journal of the Korea society of information convergence
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• v.1 no.1
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• pp.1-8
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• 2008

If the management through the center server is unnecessary and JXTA is connected to a network, a communication with any kind of devices or some device is possible. And features that a communication with heterogeneous P2P systems is possible have. The important module of the designed Data exchange system an interworking between the P2P system which it is made we used API and the each other different protocol the possible data for replacement Data exchange system were designed this kind of a feature was to the utmost utilized may account for the XML Parser Component(XPC) which we use it parses the or about a request and the generated request, and the structure of the XML Making Component(XMC) which we use in generating the inappropriate a request and response.