• Journal of KIISE:Information Networking
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• v.30 no.4
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• pp.494-503
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• 2003

The IEEE 1394 High Speed Serial Bus is a versatile, high-performance, and low-cost method of promoting interoperability between all types of A/V and computing devices. IEEE 1394 provides two transfer modes: asynchronous mode for best effort service and isochronous mode for best effort service with bandwidth reservation. This paper shows the bus performance and compared the transfer odes first at the link level and then at the application level. For the application level performance, we analyze the bus systems with fixed and adaptive interfaces, applied between the upper layer and the 1394 layer, using polling systems. Also we verifies the analysis models with simulation studies. Based on our analysis, we conclude that the adaptive interface reduces the bus access time and so increases the bus utilization.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.5 no.4
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• pp.706-715
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• 2001

TCP typically offers reasonable end-to-end performance to users regardless of the bandwidth and error characteristics of particular network technology, The robustness of TCP has contributed to its success in the internet environment. The role of communications is already well established in the office environment. With the advent of cheap, affordable broadband communications and the increasing complexity of consumer goods, it seems natural to extend the network into homes. In-home networking means a high-speed communication among the digital appliances within a home. Introduction of application over high-speed home network using TCP/IP protocol is increasing. The integrated environment of internet and home network is demanding as well. We have validated TCP model over high speed home network environment, investigated the throughput behavior of TCP over IEEE 1399 home networks, and evaluated a potential solution for high performance of TCP over IEEE 139t home networks. The simulation model has produced several interesting results in the performance of TCP over IEEE 1394 home network.

• Journal of Institute of Control, Robotics and Systems
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• v.10 no.2
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• pp.197-203
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• 2004

A real-time network in a distributed control system plays an important role for the reliable data transmission. Compared to the field-buses used in the past, TCP/IP protocol on the top of Ethered provides a compatibility between applications as well as an economical method to develop softwares. This paper proposes a modified TCP/IP structure for IEEE-1394 network, with which asynchronous and isochronous data transmission is selectively used for the real-time data transmission in a distributed control system. This paper also shows the performance of the proposed protocol by experiments.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 1999.05a
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• pp.138-141
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• 1999

정보 통신 기술의 발달이 가속화되면서 주문형 비디오, 홈쇼핑, 원격 강의와 같은 멀티미디어 서비스의 제공이 현실화되고 있다. 이러한 멀티미디어 서비스를 댁내(in-home)까지 제공하기 위해서는 쉬운 망 관리, 고품질의 서비스 제공, 보안, 설치 및 사용의 용이성, 다양한 토폴로지 제공 둥과 같은 여러가지 요구사항들을 정립해야 한다. 본 논문에서는 댁내 통신 표준과 기술 개발 동향을 간단히 살펴보고, 댁내 통신망 구현에 관련된 여러 가지 요구 사항들을 체계적으로 정립하였다. 그리고, 최근 두각을 나타내고 있는 IEEE 1394 고성능 직렬버스 표준을 댁내 통신망 구현 기술로서 활용하고자 하는 경우 이러한 요구 사항을 얼마나 충족시켜줄 수 있는가를 분석하였다.