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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korea Society for Simulation
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Journal DOI :
The Korea Society for Simulation
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Volume & Issues
Volume 11, Issue 4 - Dec 2002
Volume 11, Issue 3 - Sep 2002
Volume 11, Issue 2 - Jun 2002
Volume 11, Issue 1 - Mar 2002
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Performance Improvement of Fast Handovers in Mobile IPv6
Journal of the Korea Society for Simulation, volume 11, issue 1, 2002, Pages 1~10
IETF proposed Fast Handover mechanism tn reduce the latency during which the mobile node is effectively dusconnected from the Internet. In this paper, we propose three buffering strategies and a bicasting strategy to resolve packet loss and packet disordering problems in Fast Hangover mechanism. Through Java-based simulation we show thats, packet loss and disordering problems have been resolved by our proposal. As the result the buffering and bicasting strategies can reduce the handover delay caused by packet loss and packet disordering, in addition.
Modeling and Simulation of a RAID System
Journal of the Korea Society for Simulation, volume 11, issue 1, 2002, Pages 11~22
In this paper, a RAID system is modeled and simulated by using the DEVS formalism. The RAID system interacts with a host system by using the high-speed Fibre channel protocol and stores data in an array of IDE disks. The DAVS formalism specifies discrete event systems in a hierarchical, modular manner. The RAID system model is composed of three units: primary-PCI unit, secondary-PCI unit and MCU unit. The primary-PCI unit interfaces with the host system and I/O data caches. The secondary-PCI unit includes disks. The MCU unit controls overall system. The control algorithm of MCU and PCI transactions are analyzed and modeled, From the analysis of simulation events, we can conclude that the proposed model satisfies given requirements.
The MOSFET Hump Characteristics Occurring at STI Channel Edge
Journal of the Korea Society for Simulation, volume 11, issue 1, 2002, Pages 23~30
An STI(Shallow Trench Isolation) by using a CMP(Chemical Mechanical Polishing) process has been one of the key issues in the device isolation In this paper we fabricated N, P-MOSFEET tall analyse hump characteristics in various rounding oxdation thickness(ex : Skip, 500, 800, 1000
). As a result we found that hump occurred at STI channel edge region by field oxide recess. and boron segregation(early turn on due to boron segregatiorn at channel edge). Therefore we improved that hump occurrence by increased oxidation thickness, and control field oxide recess( 20nm), wet oxidation etch time(19HF,30sec), STI nitride wet cleaning time(99HF, 60sec+P 90min) and fate pre-oxidation cleaning time (U10min+19HF, 60sec) to prevent hump occurring at STI channel edge.
A Simulation Study for Resolving Communication Failure in IPSec Tunnel Mode with Adaptive PMTU Discovery Mechanism
Journal of the Korea Society for Simulation, volume 11, issue 1, 2002, Pages 31~44
VPN which cuts down on expense and assures security and reliance, has increased its market shares quickly because the requirement of enterprise on security has increased. But Fragmentation may raise communication failure when VPN has been implemented using IPSec. In our paper, we have given careful consideration to various reasons Preventing us from communicating stable and have presented the existing solutions about them. Also we hate provided adaptive PMTU discovery mechanism to improve: the solutions. We have proven a prowess of this mechanism through simulation
Handover Scheme Considering for Signaling Time in Mobile Networks
Journal of the Korea Society for Simulation, volume 11, issue 1, 2002, Pages 45~58
In the wireless communication systems of the next generation, the hard handover may frequent]y occur between the existing 2G(2nd generation) and the 3(1(3rd generation). When it occurs between the 2G and the 3G, the call setup procedure will be added to MT(Mobile Terminal), the relay bases in 2G and 3G, and the switches. It causes total time to handle the hangover to increase. Therefore, the forced termination probability may be increased since relative time decreases. In this paper, we propose a method to decrease the forced termination. The method execute the handover procedure with speed and direction of the MT preestimated in the inner cell when MT enters the boundary cell.
Multi-]factor Analysis of Firm-Level Performance Through Feed-Forward, Feed-Back Relationships
Journal of the Korea Society for Simulation, volume 11, issue 1, 2002, Pages 59~70
This article presents the results of research to develop a descriptive model of firm-level productivity that will allow a myriad of factor interactions to be directly accounted for. The model is a linked set of equations that attempt to capture how changes in one-factor influences the level of another factor. and ultimately bottom-line performance. The model is coded in SIMAN. It is used to determine the best use of an infusion of funds should they go for additional automation, or training etc. An application of the model to U.S. industry is presented based on parameter values obtained through a national survey.
Modeling and Performance Evaluation of Multistage Interconnection Networks with USB Scheme
Journal of the Korea Society for Simulation, volume 11, issue 1, 2002, Pages 71~82
One of the most important things in the research for MIN-based switch operation the management scheme of network cycle. In the traditional MIN, when the receving buffer module is empty, the sell has to move forward the front-most buffer position by the characteristic of the conventional FIFO queue. However, most of buffer modules are almost always full for practical amount of input loads. The long network cycle of the traditional scheme is thus a substantial waste of bandwidth. In this paper, we propose the modeling method for the input and multi-buffered MIN with unit step buffering scheme, In spite of simplicity, simulation results show that the proposed model is very accurate comparing to previous modeling approaches in terms of throughput and the trend of delay.