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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Resource Share Mechanism for the Balanced Backcup Path Establishment in Optical Networks

광 통신망에서 보호 패스 설정을 위한 분산 자원 공유 메카니즘

  • 박현 (한국전자통신연구원 BcN연구단) ;
  • 이동훈 (충남대학교 컴퓨터공학과) ;
  • 예병호 (한국전자통신연구원 BcN연구단) ;
  • 김상하 (충남대학교 컴퓨터공학과)
  • Published : 2005.12.01
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Abstract

A single fiber cut can potentially influence a total of 1.6 Tbps of traffic and is surprisingly frequent and results in significant loss of traffic. The survivability as we as the resource utilization of the connection in optical networks is important. Existing protection mechanisms to rapidly recover the failures allocate the backup path just SRLG-disjointed with working path. Those did not consider the unbalanced resource share of backup paths. The backup paths can be centralized on the specific link so that the idle resource is not used. As a result, as those do not efficiently use the resource the whole resource utilization is not so good. So we propose the mechanism to enhance the resources utilization as settling down the unbalanced resource share. Our purpose is to improve the link utilization as distributing the maximum link load.

다량의 OXC (Optical Cross Connectors)를 수용하는 광 전송망에서 한 개의 광섬유 절단은 1.6 Tbps 정도의 트래픽 손실이 있으며, 이러한 현상은 빈번히 발생 할 수 있다. 이와 같이 광 전송망에서 연결 자원의 생존성은 중요한 요소이며, 기존의 보호 메카니즘들은 워킹 패스의 SRLG(Shared Risk Link Group) 만으로 다른 백업패스를 선택하여 장애에 대한 복구를 수행한다. 그러나 백업 패스들이란 어느 한 곳에 집중될 수 있고 그 결과 유휴한 자원을 사용하지 못하며, 궁극적으로 전체 자원의 효율성을 감소시킨다. 본 논문은 불균형한 자원 공유를 해결함으로써 자원 공유의 효율성을 증가시키기 위한 메카니즘으로, 최대 링크 부하를 분산시킴으로써 링크의 효율성을 개선시키는데 목적이 있다. 실험적 결과는 여유 자원 양에 의한 제안된 메카니즘과 Somdip's 메카니즘에서 구한 시뮬레이션 결과를 통해 기술된다.

Keywords

References

  1. S. D. Maesschalck et al, 'From Network Design to Dynamic Provisioning and Restoration in Optical Cross-Connect Mesh Networks: An Architectural and Algorithm Overview,' IEEE Commun. Mag., vol.39, no. 1, Jan. 2001, pp.42-49 https://doi.org/10.1109/35.968811
  2. Y. Ye et al, 'A Simple Dynamic Integrated Provisioning/Protection Scheme in IP over WDM Networks,' IEEE Commun. Mag., Nov. 2001, pp.174-182
  3. S. Kini et al, 'Shared backup Label Switched Path Restoration,' Internet Draft, draft-kini-restoration-shared-backup-00.txt, November 2000
  4. S. Datta et al, 'Efficient Channel Reservation for Backup Paths in Optical Mesh Networks,' in Proc. GLOBCOM'01
  5. D. Xu et al, 'A New PROMISE Algorithm in Networks with Shared Risk Link Groups,' in Proc. GLOBCOM'03
  6. S. Ramamurthy et al, 'Survivable WDM Mesh Networks,' Journal of Light wave Technology, vol. 21, no. 4, April 2003
  7. Lu Shen, Xi Yang and Byrav Ramamurthy et al, 'Shared Risk Link Group (SRLG)-Diverse Path Provisioning under Hybrid Service Level Agreements in Wavelength-Routed Optical Mesh Networks: Formulation and Solution Approaches,' in Proc. SPIE OptiComm'03 , Dallas, TX, Oct. 2003
  8. http://www.dataconnection.com
  9. Canhui Ou, Hui Zang, and Biswanath Mukherjee, 'Sub-path protection for scalability and fast recovery in WDM mesh networks,' OFC, 2002. OFC 2002, 17-22 March 2002 Pages: 495-496
  10. Pin-Han Ho, Hussein T. Mouftah, H.T., 'A novel strategy for protection domain allocation in dynamic mesh WDM networks,' Communications, 2003. ICC '03. IEEE International Conference on, Volume: 3, 11- 15 May 2003 Pages: 1957-1962 vol.3 https://doi.org/10.1109/ICC.2003.1203940
  11. Hongsik Choi, Suresh Subramaniam, and Hyeong-Ah Choi et al, 'On Double-Link Failure Recovery in WDM Optical Networks,' in Proc. INFOCOM'01, pp. 808-816
  12. Eiji. Oki, Nobuaki Matsuura, Kohei Shiomoto, Naoaki Yamanaka et al., 'A Disjoint Path Selection Scheme With Shared Risk Link Groups in GMPLS Networks,' IEEE Commun. Letters, vol. 6, no. 9, Sept. 2002
  13. SuKyoung Lee, Chul Kim and David Griffith et al., 'Hierarchical Restoration Scheme for Multiple Failures in GMPLS Networks,' in Proc. ICPPW02, Feb. 2002, pp.177-182
  14. John Doucette, Wayne D. Grover et al., 'Capacity design studies of span-restorable mesh transport networks with shared-risk link group (SRLG)effects,' in Proc. SPIE Optical Networking and Communications Conference(OptiComm 2002), Boston, MA, July-August 2002