대한전자공학회논문지TC (Journal of the Institute of Electronics Engineers of Korea TC)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

광 버스트 교환망에서 Preemption 기반 서비스 차별화 기법

Preemption-based Service Differentiation Scheme for Optical Burst Switching Networks

  • 김병철 (경북대학교 전자전기컴퓨터학부) ;
  • 김준엽 (삼성전자) ;
  • 조유제 (경북대학교 전자전기컴퓨터학부)
  • 발행 : 2003.10.01
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초록

본 논문에서는 광 버스트 교환망에서의 대표적인 서비스 차별화 방식인 옵셋 타임 기반 방식의 문제점을 분석하고, preemption 채널 선택 알고리즘과 채널 분할 알고리즘으로 구성된 preemption 기반 서비스 차별화 기법을 제안한다. 제안된 preemption 채널 선택 알고리즘은 채널 효율을 증가시키기 위해 preemption이 되는 버스트의 크기를 최소화하며, 제안된 채널 분할 알고리즘은 클래스간 서비스 차별화 정도를 조절할 수 있다. 시뮬레이션을 통한 성능 분석 결과 제안된 기법은 옵셋 타임 기반 서비스 차별화 기법에서 나타날 수 있는 다중 홉 환경에서의 서비스 차별화 성능 저하를 개선하며, 제안된 채널 스케쥴링 알고리즘을 이용하여 종단간 성능이 향상됨을 알 수 있었다.

In this paper, we investigated the problems of the offset time based service differentiation scheme for optical burst switching (OBS) networks, and proposed the preemption-based service differentiation scheme which combines a preemption channel selection algorithm and channel partitioning algorithm. The proposed preemption channel selection algorithm minimizes the length of preempted bursts to improve the channel efficiency, while the proposed channel partitioning algorithm controls the degree of service differentiation between service classes. The simulation results showed that the proposed schemes could improve the end-to-end performance and effectively provide controllable service differentiation in the multiple hop network environments.

키워드

참고문헌

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