WDM 링망의 효율적인 광 파장 할당 알고리즘

Efficient Optical Wavelength Allocation Algorithms for WDM Ring Networks

  • 발행 : 2002.06.01

초록

본 논문은 OMS(Optical Multiplex Section) 또는 OCh (Optical Channel) SPRING (Shared Protection Ring)에 적용되는 두 가지 광파장 할당 알고리즘을 제안하고 시뮬레이션을 통해 특성을 비교하였다. 제안한 알고리즘들은 WDM SPRING 네트워크에 적용할 수 있는 최적화 알고리즘과 넌블러킹 알고리즘이며 대부분의 비교에서 최적화 알고리즘이 넌블러킹 알고리즘에 비해 우수함을 보였다. 하지만, 넌블러킹 알고리즘도 몇몇 기존 연결을 재구성하기 위한 광파장 연결이나 할당을 필요로 하지 않는 중요한 잇점이 있다.

This thesis describes two wavelength allocation algorithms applied to OMS (Optical Multiplex Section) or OCh (Optical Channel) SPRING (Shared Protection Ring) and compares their characteristics by simulations. Two wavelength allocation algorithms are optimal algorithm and nonblocking algorithm applicable on SPRING WDM networks. In particular, when a node is added in previous ring network, how to work for each algorithm is considered. The optimal algorithm is better than nonblocking for most of comparisons. Nonblocking algorithm has an important advantage, though. Nonblocking algorithm has no wavelength connection or allocation to reconfigure some previous connections.

키워드

참고문헌

  1. 11th Tyrrhenian Wksp. Optical Layer Protection and Restoration P. Bonenfant
  2. NFOEC'96 Fiber Optic Network Survivability: SONET/Optical Protection Layer Interworking J. Manchester;P. Bonenfant
  3. OFC'98 Techanical Digest Scalability of a novel wavelength assignment algorithm for WDM shared protection rings G.Ellinas;K.Bala;G.Chang
  4. ITU-T Draft Rec. G.872 Architecture of Optical Transport Networks
  5. OFC 2000, short course SC144 Protection and Restoration in Optical Networks P. Bonenfant;O. Gerstel
  6. OFC2000 Requirements of Optical Layer Network Restoration Robert MacDonald;Li-Ping Chen;Chao-Xing Shi;Boris Faer
  7. OFC'99, Turorial Protection and Restoration in Optical Networks P. Bonenfant
  8. OFC2000 Designing WDM Optical Network for Reliability: Routing Light Paths Efficiently for Path Protection Shen Gangxiang