A Spectrum-Scan Routing Scheme in Flexible Optical Networks

摘要：

The routing and spectrum assignment (RSA) is one of the key problems in flexible optical networks. When in a gridless fashion, the shortest-path RSA algorithms have exponential computational complexity, and are thus not suitable to be employed in real networks. On the other hand, today most optical components cannot support fully gridless tunability, which also limits the application of gridless RSA schemes. In this paper, we propose a novel grid-based spectrum-scan routing (SSR) scheme in flexible optical networks. The SSR scheme achieves optimal routing with a polynomial computational complexity. Compared with other RSA schemes, SSR has shorter computation time, lower blocking probability, and higher resource utilization.

关键词： routing and spectrum assignment (RSA) flexible optical networks gridless grid-based polynomial complexity blocking probability (BP) resource utilization (RU)

作者: Yang Liu Nan Hua Xin Wan Xiaoping Zheng

作者单位: State Key Laboratory on Integrated Optoelectronics - Tsinghua National Laboratory for Information Science and Technology, Department of Electronic Engineering, Tsinghua University,Beijing, 100084, P. R. China

会议类型: 国际会议

会议名称: 2011亚洲光纤通信与光电国际会议

会议地点: 上海

会议语种:英文

页码: 1-3

在线出版日期: 2011-11-13（万方平台首次上网日期，不代表论文的发表时间）