Method of Optical Grooming for Distance-adaptive and Effective Sharing Path-aware
Liu Huan-lin① Sui Meng① Xu Yi-fan① Chen Yong② Zhang Sheng-feng①
①(Key Laboratory of Optical Fiber Communication, Chongqing University of Posts and Telecommunications,Chongqing 400065, China) ②(School of Automation, Chongqing University of Posts and Telecommunications, Chongqing 400065, China)
In order to address the problem of reducing the resources of transponder and spectrum in flexible grid optical networks, a lightpath circle mechanism is studied for many-to-many multicast requests, and a method of optical grooming is proposed based on distance-adaptive and effective sharing path-aware. By designing a strategy of traffic pre-processing based on distance-adaptive, a lightpath circle is constructed according to the distribution characteristics?of member nodes and the distance-adaptive criterion in the proposed method. In the process of routing and spectrum allocation, by constructing a decision matrix oriented optical grooming and a priority scheduling vector, the multicast request is groomed into the established traffic with the highest effective sharing links. Moreover, the appropriate spectrum resources are allocated for the groomed requests to increase the success rates of grooming and to save the resources of transponder and spectrum. Simulation results show that the proposed method can significantly reduce the number of traffic consumed transponders and sub-carriers.
Pagès A, Perelló J, Spadaro S, et al.. Optimal route, spectrum, and modulation level assignment in split-spectrum-enabled dynamic elastic optical networks[J]. Journal of Optical Communications and Networking, 2014, 6(2): 114-126.
[2]
Wang Yang, Cao Xiao-jun, Hu Qian, et al.. Towards elastic and fine-granular bandwidth allocation in spectrum-sliced optical networks[J]. Journal of Optical Communications and Networking, 2012, 4(11): 906-917.
Liu Huan-lin, Fang Qiang, and Lei Fang. Analysis of multicast traffic grooming algorithms in WDM mesh networks[J]. Journal of Chongqing University of Posts and Telecommunications (Natural Science Edition), 2012, 24(3): 269-277.
[4]
Guo Lei, Hou Wei-gang, Wei Xue-tao, et al.. Power efficient grooming based on optical bypass reconfiguration in green optical networks[J]. Optik-International Journal for Light and Electron Optics, 2013, 124(5): 437-445.
Liu Huan-lin, Liu Yang, Chen Yong, et al.. Time-aware green grooming algorithm for scheduled traffic in WDM networks[J]. Journal of Beijing University of Posts and Telecommunications, 2014, 37(5): 71-74.
[6]
Fallahpour A, Beyranvand H, Nezamalhosseini S A, et al.. Energy efficient routing and spectrum assignment with regenerator placement in elastic optical networks[J]. Journal of Lightwave Technology, 2014, 32(10): 2019-2027.
[7]
El-Gorashi T E H, Dong X, and Elmirghani J M H. Green optical orthogonal frequency-division multiplexing networks [J]. IET Optoelectronics, 2014, 8(3): 137-148.
[8]
Christodoulopoulos K, Tomkos I, and Varvarigos E A. Elastic bandwidth allocation in flexible OFDM-based optical networks[J]. Journal of Lightwave Technology, 2011, 29(9): 1354-1366.
[9]
Zhang Shu-qiang, Martel C, and Mukherjee B. Dynamic traffic grooming in elastic optical networks[J]. IEEE Journal on Selected Areas in Communications, 2013, 31(1): 4-12.
Wu Fan, Mao Yu-ming, Huang Xiao-yan, et al.. Optimal energy-efficient power allocation in OFDMA system[J]. Journal of Electronics & Information Technology, 2014, 36(7): 1673-1679.
[11]
Eira A, Santos J, Pedro J, et al.. Multi-objective design of survivable flexible-grid DWDM networks[J]. Journal of Optical Communications and Networking, 2014, 6(3): 326-339.
[12]
Khodashenas P S, Comellas J, Spadaro S, et al.. Using spectrum fragmentation to better allocate time-varying connections in elastic optical networks[J]. Journal of Optical Communications and Networking, 2014, 6(5): 433-440.
[13]
Ye Z, Patel A N, Ji P N, et al.. Distance-adaptive and fragmentation-aware optical traffic grooming in flexible grid optical networks[C]. Proceedings of OptoElectronics and Communication Conference and Australian Conference on Optical Fiber Technology (OECC/ACOFT), Melbourne, 2014: 355-356.
[14]
Xu Zhan-qi, Wang Jing, Xu Bo, et al.. Modelling and heuristic algorithms for routing and spectrum assignment in elastic optical networks[J]. Acta Photonica Sinica, 2014, 43(7): 0706004-1-0706004-5.
[15]
Saleh M A and Kamal A E. Many-to-many traffic grooming in WDM networks[J]. Journal of Optical Communications and Networking, 2009, 1(5): 376-391.
[16]
Saleh M A and Kamal A E. Design and provisioning of WDM networks with many-to-many traffic grooming[J]. IEEE/ ACM Transactions on Networking, 2010, 18(6): 1869-1882.
[17]
Guo Lei, Hou Wei-gang, Zheng Ze-yu, et al.. Green provisioning of many-to-many sessions over WDM optical networks[J]. Journal of Lightwave Technology, 2013, 31(20): 3289-3301.
[18]
Shachnai H, Voloshin A, and Zaks S. Optimizing bandwidth allocation in flex-grid optical networks with application to scheduling[C]. Proceedings of the IEEE 28th International Parallel and Distributed Processing Symposium (IPDPS), Phoenix, 2014: 862-871.