• Title/Summary/Keyword: Network Simulator 3

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A Design of a Co-simulator Integrates a System-on-Chip Simulator and Network Simulator for Development Environments of Prototype Network Devices (네트워크 디바이스의 프로토타입 개발 환경을 위한 시스템-온-칩 시뮬레이터와 네트워크 시뮬레이터의 통합 시뮬레이터 설계 및 구현)

  • Lee, He-Eung;Park, Soo-Jin;Gwak, Dong-Eun;Park, Hyun-Ju
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.14 no.3
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    • pp.754-766
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    • 2010
  • In the wireless communication protocols, a network device is responsible for the operation of lower-layers. The network device consists of hardware and software modules, so it can be designed using system-on-chip simulator. The simulator design needs the support of a network simulator as well as system-on-chip simulator, because the network device interact with various higher layer communication protocols. Therefore the co-simulator can become a development environment of the network device through the combining of them. In this paper we propose a co-simulator combining these two simulators. The proposed co-simulator does not degrade performance due to integrations. Also, it is easy to integrate them because the implementation of the kernel is independent.

Development of Distributed Generic Simulator (GenSim) through Invention of Simulated Network (simNetwork)

  • Koo, Cheol-Hea;Lee, Hoon-Hee;Cheon, Yee-Jin
    • Journal of Astronomy and Space Sciences
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    • v.28 no.3
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    • pp.241-252
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    • 2011
  • A simulated network protocol provides the capability of distributed simulation to a generic simulator. Through this, full coverage of management of data and service handling among separated simulators is achieved. The distributed simulation environment is much more conducive to handling simulation load balancing and hazard treatment than a standalone computer. According to the simulated network protocol, one simulator takes on the role of server and the other simulators take on the role of client, and client is controlled by server. The purpose of the simulated network protocol is to seamlessly connect multiple simulator instances into a single simulation environment. This paper presents the development of a simulated network (simNetwork) that provides the capability of distributed simulation to a generic simulator (GenSim), which is a software simulator of satellites that has been developed by the Korea Aerospace Research Institute since 2010, to use as a flight software validation bench for future satellite development.

Implementation of Wireless Network simulator considering a User's Call Characteristics (사용자 통화 특성을 고려한 무선 네트워크 시뮬레이터 구현)

  • Yoon, Young Hyun
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.5 no.3
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    • pp.107-115
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    • 2009
  • Traditionally, simulation method is used to test and evaluate the performance of communication protocol or functional elements for mobile communication service. In this paper, wireless network simulator is implemented using the C++ object-oriented programming language. This simulator can simulate wireless data services, like as ad-hoc networks, by considering the user's mobility. In this paper, the simulator includes network traffic model to reflect wireless data service and traffic source model to represent a user's mobility similar to real service environment and traffic characteristics can be reflected on the simulation, and also more accurate simulation results can be got through that. In addition, by using object-oriented techniques, new service feature or environment can be easily added or changed so that the developed mobile communication simulator can reflect the real service environment all the time. This simulator can be used in adjusting the characteristics of wireless data hosts following the mobility of the user, and also can be used in building new wireless ad-hoc network routing protocols.

Development of Supply Chain Network Simulator (공급사슬네트워크 시뮬레이터 개발)

  • Lim, Seok-Jin;Mo, Chang-Woo
    • Journal of the Korea Safety Management & Science
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    • v.17 no.3
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    • pp.265-272
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    • 2015
  • The competition between companies for prior occupation of the market is becoming fierce. In this highly competitive situation, it is important for companies to differentiate themselves if they are going to have a chance at success. And the competition to create the best solution method possible is higher than ever. Increased competition is forcing companies to lower costs and improve efficiency. A supply chain management(SCM) has become one of the most important solution methods of competitive advantage. This study has developed a simulator for the supply chain network problem. The simulator is designed to simulate the conditions of an actual supply chain network considering uncertainties. The simulator developed using commercial simulation tool ARENA and the results of computational experiments for a simple example were given and discussed to validate the developed simulator. Further research is needed, but using the simulator could become a useful tool for decision making in the supply chain network area.

A Study on the Development of a Simulator for Social Networks in Organizations Using Arena (Arena를 이용한 조직에서의 사회연결망 시뮬레이터 개발에 관한 연구)

  • Choi, Seong-Hoon
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.35 no.3
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    • pp.62-69
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    • 2012
  • This thesis proposes a new social network simulator, which can be used for the social network analysis (SNA). It is composed of three modules; initialization, network evolution, and output generation. For the network evolution module, we suggest a modified JGN (MJGN) based on JGN, the network evolution model developed by Jin, Girvan, and Newman. Arena, one of the most popular simulation tools, was used to model the agent based social network simulator. Lastly, some test results were presented to show the value of the proposed simulator when one performs SNA at the longitudinal point of view.

Networked Visualization for a Virtual Bicycle Simulator (가상현실 자전거 시뮬레이터에서 시각화 네트워크)

  • Lee J.H.;Han S.H.
    • Korean Journal of Computational Design and Engineering
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    • v.9 no.3
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    • pp.212-219
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    • 2004
  • This paper presents the visualization method of the KAIST interactive bicycle simulator. The simulator consists of two bicycles of 6 DOF and 4 DOF platforms, force feedback handlebars and pedal resistance systems to generate motion feelings; a real-time visual simulator, a HMD and a beam projection system; and a 3D sound system. The system has an integrating control network with the server-client network structure for multiple simulators. The visual simulator generates dynamic images in real-time while communicating with other modules of the simulator. The operator of the simulator can have realistic visual experience of riding on a velodrome or through the KAIST campus, while being able to watch the other bicycle with an avatar.

Development of charge/discharge simulator model for network based vehicle (네트워크 기반 자동차용 충/방전 시스템 시뮬레이터 모델 개발)

  • Lee, Sang-Seok;Yang, Seung-Ho;Cho, Sang-Bock
    • Proceedings of the KIPE Conference
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    • 2005.07a
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    • pp.634-637
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    • 2005
  • We propose a charge/discharge model for network based vehicle. These model include motor, alternator, lamp, brake, window brush, air conditioner, etc.. Also, we simulate these models in Matlab. The simulation results show that error range is less than 3%. So, we can adopt these model to charge/discharge simulator for network based vehicle. If this error range can be shrunk within 2%, we can use this simulator for comertial use.

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Development of a 3D Simulator and Intelligent Control of Track Vehicle (궤도차량의 지능제어 및 3D 시률레이터 개발)

  • 장영희;신행봉;정동연;서운학;한성현;고희석
    • Proceedings of the Korean Institute of Intelligent Systems Conference
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    • 1998.03a
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    • pp.107-111
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    • 1998
  • This paper presents a now approach to the design of intelligent contorl system for track vehicle system using fuzzy logic based on neural network. The proposed control scheme uses a Gaussian function as a unit function in the neural network-fuzzy, and back propagation algorithm to train the fuzzy-neural network controller in the framework of the specialized learning architecture. Moreover, We develop a Windows 95 version dynamic simulator which can simulate a track vehicle model in 3D graphics space. It is proposed a learning controller consisting of two neural network-fuzzy based of independent reasoning and a connection net with fixed weights to simply the neural networks-fuzzy. The dynamic simulator for track vehicle is developed by Microsoft Visual C++. Graphic libraries, OpenGL, by Silicon Graphics, Inc. were utilized for 3D Graphics. The performance of the proposed controller is illustrated by simulation for trajectory tracking of track vehicle speed.

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Dynamic Simulation on a Network Security Simulator using SSFNet (SSFNet을 이용한 네트워크 보안 시뮬레이터에서 동적 시뮬레이션 방법)

  • 박응기;윤주범;임을규
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.14 no.3
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    • pp.101-106
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    • 2004
  • Recently, a network defense simulator becomes essential in studying cyber incidents because the cyber terror become more and more interesting. The network defense simulator is a tool to estimate damages and an effectiveness of a defense mechanism by modeling network intrusions and defense mechanisms. Using this tool, users can find efficient ways of preventing a cyber terror and recovering from the damage. Previous simulators start the simulation after entire scenario has made and been loaded to simulation engine. However, in this way it can't model human judgement and behavior, and it can't simulate the real cyber terror very well. In this paper, we have added a dynamic simulation component to our previous network security simulator. This component improved accurate modeling of network intrusions and defense behaviors. We have also proposed new modified architecture of the simulation system. Finally we have verified correct simulation results from stammer worn simulation.

DLMS SCADA System based on TETRA (TETRA 기반 DLMS 원방감시 시스템)

  • Song, Byung-Kwen;Lee, Suk-Hee
    • Journal of IKEEE
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    • v.13 no.3
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    • pp.95-102
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    • 2009
  • TETRA(TErrestrial Trunked RAdio) is wireless communication system generally adopted to public network and backbone network, as the technology of Trunked Radio System specified by ETSI(European Telecommunications Standards Institute) and currently adopted to the Electric Power IT Backbone Network in Korea. DLMS(Device Language Message Specification) is used in order to meter an electric measuring instrument value. In this paper, DLMS Server and Client simulator are used based on Window operating system. The multi-functional gateway, which transforms the communications based on RS-232C between DLMS Server Simulator and Client Simulator to the one based on TETRA PEI(Peripheral Equipment Interface), is developed such that DLMS SCADA(Supervisory Control And Data Acquisition) system is constructed based on TETRA.

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