• International Journal of Computer Science & Network Security
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• 제23권10호
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• pp.107-114
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• 2023

The study provides the identification of vulnerabilities in the security issues by Wireless Network. To achieve it the research focus on packet flow analysis, end to end data communication, and the security challenges (Cybercrime, insider threat, attackers, hactivist, malware and Ransomware). To solve this I have used the systematic literature review mechanisms and demonstrative tool namely Wireshark network analyzer. The practical demonstration identifies the packet flow, packet length time, data flow statistics, end- to- end packet flow, reached and lost packets in the network and input/output packet statics graphs. Then, I have developed the proposed model that used to secure the Wireless network solution and prevention vulnerabilities of the network security challenges. And applying the model that used to investigate the security challenges and vulnerabilities of cloud computing services is used to fulfill the network security goals in Wireless network. Finally the research provides the model that investigate the security challenges and vulnerabilities of cloud computing services in wireless networks

• 한국통신학회논문지
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• 제36권8B호
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• pp.1003-1011
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• 2011

본 논문에서는 우선 센서네트워크를 기반으로 실시간 다중소스 센서데이터 관리시스템을 제안하고 구현하였다. 제안된 관리시스템은 대상시스템의 상태를 효율적으로 감시하고 제어하기 위해서 다수의 센서들로부터 수집된 실시간 데이터를 무선으로 서버로 전송하며, 이를 분석하여 동작하도록 설계되었다. 제안된 시스템은 원격지에서 세포배양장치와 같은 다중 소스 센서들을 클러스터 형태로 구성하고, 이들로부터 발생하는 센서데이터를 제어, 전송하며, 각 소스로부터 수신된 데이터를 소스별로 구분하여 관리가 가능하도록 구현하였다. 제안된 시스템의 성능을 평가하기 위해서 전송거리에 따른 전송 지연시간과 다중소스로부터 발생된 데이터 손실률을 측정하여 분석하였으며, 그 결과 우수한 성능을 보임을 확인하였다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제10권8호
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• pp.3641-3655
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• 2016

Wireless sensor networks (WSNs) provide a promising approach to monitor the physical environments, to prolong the network lifetime by exploiting the mutual correlation among sensor readings has become a research focus. In this paper, we design a hierarchical network framework which guarantees layered-compression. Meanwhile, a data sorting-based adaptive spatial compression scheme (DS-ASCS) is proposed to explore the spatial correlation among signals. The proposed scheme reduces the amount of data transmissions and alleviates the network congestion. It also obtains high compression performance by sorting original sensor readings and selectively discarding the small coefficients in transformed matrix. Moreover, the compression ratio of this scheme varies according to the correlation among signals and the value of adaptive threshold, so the proposed scheme is adaptive to various deploying environments. Finally, the simulation results show that the energy of sorted data is more concentrated than the unsorted data, and the proposed scheme achieves higher reconstruction precision and compression ratio as compared with other spatial compression schemes.

• ETRI Journal
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• 제42권1호
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• pp.36-45
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• 2020

A priority-based data communication approach, developed by employing cognitive radio capacity for sensor nodes in a wireless terrestrial sensor network (TSN), has been proposed. Data sensed by a sensor node-an unlicensed user-were prioritized, taking sensed data importance into account. For data of equal priority, a first come first serve algorithm was used. Non-preemptive priority scheduling was adopted, in order not to interrupt any ongoing transmissions. Licensed users used a nonpersistent, slotted, carrier sense multiple access (CSMA) technique, while unlicensed sensor nodes used a nonpersistent CSMA technique for lossless data transmission, in an energy-restricted, TSN environment. Depending on the analytical model, the proposed wireless TSN environment was simulated using Riverbed software, and to analyze sensor network performance, delay, energy, and throughput parameters were examined. Evaluating the proposed approach showed that the average delay for sensed, high priority data was significantly reduced, indicating that maximum throughput had been achieved using wireless sensor nodes with cognitive radio capacity.

• International journal of advanced smart convergence
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• 제4권2호
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• pp.14-19
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• 2015

Recently, water sewage disposal facilities are able to manage real-time data collection and record management through compact broadband modem LAN switching technology. Therefore, it needs more stable and efficient facility management. So, we required practical use of environmental facilities convergence based on broadband integrated modem. In this paper, we proposed short distance wireless communication network of compact broadband modem for sewage disposal facilities. And it received data inside of water treatment facility using the two communication methods (IEEE802.11x and IEEE802.15.4x). Then, our proposed an data-flow control algorithm of wireless network technology will prioritize processing data when emergency happen through collecting data, analysis data and processing. Lastly, we proved usefulness by experiment and simulation analysis.

• International Journal of Internet, Broadcasting and Communication
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• 제13권3호
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• pp.25-33
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• 2021

Energy-harvesting wireless sensor networks(EH-WSNs) can collect energy from the environment and overcome the technical limitations of existing power. Since the transmission distance in a wireless sensor network is limited, the data are delivered to the destination node through multi-hop routing. In EH-WSNs, the routing protocol should consider the power situations of nodes, which is determined by the remaining power and energy-harvesting rate. In addition, in applications such as environmental monitoring, when there are urgent data, the routing protocol should be able to transmit it stably and quickly. This paper proposes an adaptive routing protocol that satisfies different requirements of normal and urgent data. To extend network lifetime, the proposed routing protocol reduces power imbalance for normal data and also minimizes transmission latency by controlling the transmission power for urgent data. Simulation results show that the proposed adaptive routing can improve network lifetime by mitigating the power imbalance and greatly reduce the transmission delay of urgent data.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2007년도 춘계종합학술대회
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• pp.611-614
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• 2007

본 논문은 PDA(Personal Digital Assistant)와 WLAN(Wireless Local Area Network) 기술을 결합한 TCP-IP 통신 기반의 원격 장치 데이터 모니터링 시스템을 제안한다. 무선의 PDA 디바이스는 서버측에서 전송되는 원격 장치의 데이터인 온도, 습도, 장치 상태 등을 연속적으로 수집하고 모바일 디바이스에 디스플레이 함으로써 무선 통신의 원격 모니터링을 위해서 사용된다. 따라서 유 무선 통합의 원격 장치 데이터 모니터링 시스템을 구축함으로써 관리자의 상황에 적응적인 데이터 수집과 장치 상태 확인의 효율성을 제공한다.

• Smart Structures and Systems
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• 제6권3호
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• pp.263-275
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• 2010

In the last decade, wireless sensor networks have emerged as a promising technology that could accelerate progress in the field of structural monitoring. The main advantages of wireless sensor networks compared to conventional monitoring technologies are fast deployment, small interference with the surroundings, self-organization, flexibility and scalability. These features could enable mass application of monitoring systems, even on smaller structures. However, since wireless sensor network nodes are battery powered and data communication is the most energy consuming task, transferring all the acquired raw data through the network would dramatically limit system lifetime. Hence, data reduction has to be achieved at the node level in order to meet the system lifetime requirements of real life applications. The objective of this paper is to discuss some general aspects of data processing and management in monitoring systems based on wireless sensor networks, to present a prototype monitoring system for civil engineering structures, and to illustrate long-term field test results.

• 융합보안논문지
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• 제2권2호
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• pp.29-38
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• 2002

무선 인터넷에 대한 수요가 날로 증가하고 있는 가운데 무선 인터넷이 보다 활성화되기 위해서는 반드시 해결해야 될 문제가 있는데, 보안 문제가 바로 그것이다. 특히 음성 위주의 이동통신에서는 도청만이 문제가 되었지만 증권이나 뱅킹같이 단순한 정보 서비스를 뛰어넘는 상거래 활동이 이루어지는 데이터 서비스에서는 사용자 인증, 데이터 무결성 보장 등 해결해야 할 문제가 많다. 이에 무선 인터넷 환경에서 안전한 서비스를 제공하기 위해 유선 인터넷 환경에서와 같은 보안 서비스를 제공할 수 있는 무선 PH(WPKI: Wireless Public Key Infrastructure)의 필요성이 대두되었다. 즉, 유선 인터넷 환경에서 제공되는 기밀성, 무결성, 부인봉쇄 등의 보안 서비스를 무선 인터넷 환경에서도 제공하기 위해서는, 먼저 무선 PKI가 구축되고 서비스가 활성화되어야 할 것이다. 본 논문에서는 안전한 무선 인터넷 서비스를 위한 다양한 무선 인터넷 기술들과 그에 사용되는 무선 PKI기술 그리고 이에 적용 가능한 무선 PKI 표준들에 대해 분석하였다. 본 논문의 수행 결과로는 안전한 무선 PKI 서비스의 활성화와 더불어 무선 인터넷 뱅킹 서비스, 주식 거래, 온라인 쇼핑 등 무선 인터넷을 이용한 전자 상거래의 활성화에 기여할 것으로 기대된다.

• Structural Engineering and Mechanics
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• 제15권3호
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• pp.285-297
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• 2003

Complementing recent advances made in the field of structural health monitoring and damage detection, the concept of a wireless sensing network with distributed computational power is proposed. The fundamental building block of the proposed sensing network is a wireless sensing unit capable of acquiring measurement data, interrogating the data and transmitting the data in real time. The computational core of a prototype wireless sensing unit can potentially be utilized for execution of embedded engineering analyses such as damage detection and system identification. To illustrate the computational capabilities of the proposed wireless sensing unit, the fast Fourier transform and auto-regressive time-series modeling are locally executed by the unit. Fast Fourier transforms and auto-regressive models are two important techniques that have been previously used for the identification of damage in structural systems. Their embedment illustrates the computational capabilities of the prototype wireless sensing unit and suggests strong potential for unit installation in automated structural health monitoring systems.