抗毁WDM网中支持QoS的选路和波长分配算法
A QoS-based routing and wavelength assignment algorithm in survivable WDM optical transport networks
-
摘要: 该文首先探讨了抗毁WDM网中支持QoS的分层图模型,在此基础上提出一种抗毁WDM网中支持QoS的选路和波长分配算法。该算法根据上层业务不同的QoS要求,对其光路建立请求区别对待,以满足它们不同的阻塞率和恢复率要求。计算机仿真结果表明该算法既满足了上层业务不同的QoS要求,同时又充分利用了有限的网络资源,使全网的平均阻塞率降低。Abstract: This paper considers the survivability of WDM layer according to the client layers QoS requirements. A novel priority-based protection strategy is presented, and a QoS-based layered graph method is developed in the WDM optical transport network to reduced the blocking probability of the connection request. Based on them, a QoS-based RWA strategy in survivable WDM networks is proposed. Simulation results of the network performance in different dynamic traffic load are given. The results show that this algorithm can not only meet the different QoS requirements of the client layers service, but also utilize the finite networking resources efficiently with the reduced blocking probability.
-
V. Anand, C. Qiao, Dynamic establishment of protection paths in WDM networks, Part 1, inProc., IEEE ICCCN00, Las Vegas, NV, Oct. 2000.[2]Xipeng Xiao, et al., Internet QoS: A big picture, IEEE Network, 1999, 13(2), 8-18.[3]N. Golmie, et al., A differentiated optical services model for WDM networks, IEEE Comm. Mag.,2000, 38(2), 68-73.[4]Sheng-Tzong Cheng, Backtrack routing and priority-based wavelength assignment in WDM networks, Computer communications, 1999, 22(1), 1-10.[5]G. Mohan.[J].A. K. Somani, Routing dependable connections with specified failure restorationguarantees in WDM networks, in Proc., IEEE INFOCOM00, vol. 3, Tel Aviv, Israel, Mar.1761,2000:-[6]K. Lee, et al., A wavelength rerouting algorithm in wide-area all-optical networks, Journal ofLightwave Technology, 1996, 14(6), 1218-1229.[7]徐世中等,多光纤波分复用网动态路由和波长分配算法,电子学报,2000,28(7),23-27.[8]O. Gersterl, R. Ramaswami, Optical layers survivability: A services perspective, IEEE Comm.Mag., 2000, 38(3), 104-113.[9]S. Ramamurthy, B. Mukherjee, Survivable WDM mesh networks, Part I -Protection, in Proc.,IEEE INFOCOM99, New York, NY, Mar. 1999. -
计量
- 文章访问数: 2146
- HTML全文浏览量: 113
- PDF下载量: 553
- 被引次数: 0
下载:
