QoS-Aware Wavelength Assignment With BER and Latency Constraints for All-Optical Networks

被引:19
作者
He, Jun [1 ]
Brandt-Pearce, Maite [1 ]
Subramaniam, Suresh [2 ]
机构
[1] Univ Virginia, Charles L Brown Dept Elect & Comp Engn, Charlottesville, VA 22904 USA
[2] George Washington Univ, Dept Elect & Comp Engn, Washington, DC 20052 USA
基金
美国国家科学基金会;
关键词
Crosstalk; optical fiber communication; optical switches; routing and wavelength assignment (RWA); transmission impairments; wavelength division multiplexing (WDM);
D O I
10.1109/JLT.2008.2004944
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Physical impairments originating from optical fiber components and intermediate switching nodes can be the dominant reason calls are blocked in wide-area all-optical wavelength division multiplexing (WDM) networks. When a centralized network controller is used, estimating the impact of the physical impairments on the quality of a lightpath before provisioning it can cause a significant delay. In this paper, quality of service aware wavelength assignment algorithms are proposed that consider both bit-error rate (BER) and latency constraints. A novel wavelength assignment technique called wavelength ordering is shown via simulation to reduce the call blocking probability resulting from both physical impairments and excessive processing delay caused by channel BER estimation.
引用
收藏
页码:462 / 474
页数:13
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