基于弹性光网络的优先共享通路保护技术
|
摘要
优先共享通路保护技术研究大多集中在WDM网络中,而弹性光网络与传统WDM光网络在资源分配等方面存在巨大差异,因此有些成果和方法不能直接应用于解决弹性光网络的保护问题,这就需要通过比较两种网络的差别,得出适应于弹性光网络的保护算法。利用C++仿真平台比较基于弹性光网络的优先共享通路保护和传统共享通路保护在资源利用率、阻塞率、保护开销以及平均跳数四个方面的性能,得出结论:相比于传统共享通路保护技术,优先共享通路保护阻塞率更低,资源利用率更高,保护开销更少,而平均跳数更多。
The research on preferentially-shared path protection technology is mainly concentrated in the WDM network, while the elastic optical network and the traditional WDM optical network are quite different in resource allocation. For this reason, some results and methods couldn,t be directly applied to solving the protection of elastic optical network, it is thus necessary to compare the difference of between these two kinds of networks, and acquire the protection algorithm suitable for the elastic optical network. C++ simulation platform is used to compare the preferentially-shared path protection based onelastic optical network and the routinely-shared path protection in resource utilization rate, blocking rate, protection cost and average hop count. Final conclusion is draw that compared to the routinely-shared path protection technology, the preferentially-shared path protection is lower in blocking rate and higher in, resource utilization rate, and at the same, lower in protection cost and more in average hop count.
The research on preferentially-shared path protection technology is mainly concentrated in the WDM network, while the elastic optical network and the traditional WDM optical network are quite different in resource allocation. For this reason, some results and methods couldn,t be directly applied to solving the protection of elastic optical network, it is thus necessary to compare the difference of between these two kinds of networks, and acquire the protection algorithm suitable for the elastic optical network. C++ simulation platform is used to compare the preferentially-shared path protection based onelastic optical network and the routinely-shared path protection in resource utilization rate, blocking rate, protection cost and average hop count. Final conclusion is draw that compared to the routinely-shared path protection technology, the preferentially-shared path protection is lower in blocking rate and higher in, resource utilization rate, and at the same, lower in protection cost and more in average hop count.
引文
[1]Liu M,Tornatore M,Mukherjee B.Survivable Traffic Grooming in Elastic Optical Networks-Shared Protection[J].Journal of Lightwave Technology,2013,31(06):903-909.
[2]魏越.基于弹性光网络的网络保护技术研究[D].苏州:苏州大学,2014.WEI Yue.Research on Network Protection Technology based on Elastic Optical Network[D].Suzhou:Suzhou University,2014.
[3]蓝天宝.弹性光网络生存性技术研究[D].北京:北京邮电大学,2013:1-15.LAN Tian-bao.Research on Survivability Technology of Elastic Optical Network[D].Beijing:Beijing Universityof P ostsand Telecommunications,2013:1-15.
[4]蔚承英.基于负载平衡的共享通路保护算法[J].计算机工程与设计,2009,30(17):3967-3970.WEI Cheng-ying.Shared Path Protection Algorithm based on Load Balancing[J].Computer Engineering and Design,2009,30(17):3967-3970.
[5]王婧.弹性光网络中的高效选路和频谱分配算法[D].西安:西安电子科技大学,2013:15-19.WANGJing.Efficiental Gorithms for Routing and Spectrum Assignment in Spectrum Sliced Elastic Optical Network[D].Xi’an:Xi’an Electronic and Engineering University,2013:15-19.
[6]赵太飞,王文科,刘龙.WDM光网络中一种优先共享通路保护算法[J].西安激光技术学报,2012,36(03):408-412.ZHAO Tai-fei,WANG Wen-ke,LIU Long.A Priority Sharing Path Protection Algorithm in WDM Optical Networks[J].Journal of Xi'an Laser Technology,2012,36(03):408-412.
[7]王磊.弹性光网络中动态资源分配与调度技术研究[D].北京:北京邮电大学,2012:1-13.WANG Lei.Research on Dynamic Resource Allocation and Scheduling in Elastic Optical Networks[D].Beijing:Beijing Un iversityof Posts and Telecommunications,2012:1-13.
[8]WANG Yao,Byrac Ramamurthy.Surivable Traffic Grooming with Path Protection at the Connection Level in WDM Mesh Networds[J].Journal of Lightwave Technology,2005(23):2846-2853.
[9]虞红芳,王晟,利乐民.网状WDM网中的共享通路保护设计算法[J].电子学报,2004,4(04):635-638.YU Hong-fang,WANG Sheng,LI Le-min.Shared-path Protection Design Algorithm for Meshed WDM Network[J].Chinese Journalof Electronics,2004,4(04):635-638.
[10]Shen G,Wei Y,Yang Q.Shared Backup Path Protection(SBPP)in Elastic Optical Transport Netwpoks[C].Asia Communications and Photonics Conference,Optical Society of America,2012:PAF4C.6
[11]XU Shao,Yong-Kee Yeo,Zhaowen Xu.Shared-Path Protection in OFDM-based Optical Networks with Elastic Bandwidth Allocation[J].Optical Fiber Communication Conference&Exposition,2012:1-3.
[2]魏越.基于弹性光网络的网络保护技术研究[D].苏州:苏州大学,2014.WEI Yue.Research on Network Protection Technology based on Elastic Optical Network[D].Suzhou:Suzhou University,2014.
[3]蓝天宝.弹性光网络生存性技术研究[D].北京:北京邮电大学,2013:1-15.LAN Tian-bao.Research on Survivability Technology of Elastic Optical Network[D].Beijing:Beijing Universityof P ostsand Telecommunications,2013:1-15.
[4]蔚承英.基于负载平衡的共享通路保护算法[J].计算机工程与设计,2009,30(17):3967-3970.WEI Cheng-ying.Shared Path Protection Algorithm based on Load Balancing[J].Computer Engineering and Design,2009,30(17):3967-3970.
[5]王婧.弹性光网络中的高效选路和频谱分配算法[D].西安:西安电子科技大学,2013:15-19.WANGJing.Efficiental Gorithms for Routing and Spectrum Assignment in Spectrum Sliced Elastic Optical Network[D].Xi’an:Xi’an Electronic and Engineering University,2013:15-19.
[6]赵太飞,王文科,刘龙.WDM光网络中一种优先共享通路保护算法[J].西安激光技术学报,2012,36(03):408-412.ZHAO Tai-fei,WANG Wen-ke,LIU Long.A Priority Sharing Path Protection Algorithm in WDM Optical Networks[J].Journal of Xi'an Laser Technology,2012,36(03):408-412.
[7]王磊.弹性光网络中动态资源分配与调度技术研究[D].北京:北京邮电大学,2012:1-13.WANG Lei.Research on Dynamic Resource Allocation and Scheduling in Elastic Optical Networks[D].Beijing:Beijing Un iversityof Posts and Telecommunications,2012:1-13.
[8]WANG Yao,Byrac Ramamurthy.Surivable Traffic Grooming with Path Protection at the Connection Level in WDM Mesh Networds[J].Journal of Lightwave Technology,2005(23):2846-2853.
[9]虞红芳,王晟,利乐民.网状WDM网中的共享通路保护设计算法[J].电子学报,2004,4(04):635-638.YU Hong-fang,WANG Sheng,LI Le-min.Shared-path Protection Design Algorithm for Meshed WDM Network[J].Chinese Journalof Electronics,2004,4(04):635-638.
[10]Shen G,Wei Y,Yang Q.Shared Backup Path Protection(SBPP)in Elastic Optical Transport Netwpoks[C].Asia Communications and Photonics Conference,Optical Society of America,2012:PAF4C.6
[11]XU Shao,Yong-Kee Yeo,Zhaowen Xu.Shared-Path Protection in OFDM-based Optical Networks with Elastic Bandwidth Allocation[J].Optical Fiber Communication Conference&Exposition,2012:1-3.