The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Enhanced p-Cycles for WDM Optical Network with Limited Wavelength Converters

제한된 광 파장변환 기능을 가지는 WDM망을 고려한 개선된 p-Cycle 기법

  • 신상헌 (영남대학교 대학원 정보통신공학과 차세대 네트워킹(ANT)연구실) ;
  • 신해준 (영남대학교 대학원 정보통신공학과 차세대 네트워킹(ANT)연구실) ;
  • 김영탁 (영남대학교 대학원 정보통신공학과 차세대 네트워킹(ANT)연구실)
  • Published : 2003.03.01
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Abstract

In this paper, we propose an enhanced p-cycles (preconfigured protection cycles) scheme for fast restoration in WDM (Wavelength Division Multiplexing) optical mesh network with limited wavelength conversion for fast restoration. We enhanced the p-cycles to accommodate uni-directional connections to be used in uni-directional multicasting or asymmetric broadband multimedia communications with bi-directional connectivity. We applied it to WDM network with limited wavelength conversion and analyzed the result. The analysis results show that the enhanced p-cycle algorithm provides better performance in WDM optical networks with limited wavelength converter.

본 논문은 제한된 범위의 광 파장 변환기능을 가진 WDM (Wavelength Division Multiplexing) 망에서의 신속한 장애 복구에 적용될 수 있도록 개선된 p-cycle (preconfigured protection cycle) 기법을 제안한다. 개선된 p-cycle 기법은 단방향 멀티캐스팅이나 양방향으로 연결성을 가지지만 비대칭적인 대역폭을 사용하는 광대역 멀티미디어 통신에서 사용되는 단방향 연결을 수용할 수 있도록 수정하였다. 본 논문에서는 개선된 p-cycle 기법을 광 파장 변환기능이 제한적인 WDM 망에서 적용하고 그 결과를 분석하였다. 개선된 p-cycle 알고리즘은 광 파장 변환 기능이 제한적인 WDM망에서 기존의 방안보다 우수한 성능을 보여준다.

Keywords

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