Link importance incorporated failure probability measuring solution for multicast light-trees in elastic optical networks

Xin Li; Lu Zhang; Ying Tang; Shanguo Huang

doi:10.1117/1.OE.57.3.036117

30 March 2018 Link importance incorporated failure probability measuring solution for multicast light-trees in elastic optical networks

Xin Li, Lu Zhang, Ying Tang, Shanguo Huang

Author Affiliations +

Optical Engineering, Vol. 57, Issue 3, 036117 (March 2018). https://doi.org/10.1117/1.OE.57.3.036117

Abstract

The light-tree-based optical multicasting (LT-OM) scheme provides a spectrum- and energy-efficient method to accommodate emerging multicast services. Some studies focus on the survivability technologies for LTs against a fixed number of link failures, such as single-link failure. However, a few studies involve failure probability constraints when building LTs. It is worth noting that each link of an LT plays different important roles under failure scenarios. When calculating the failure probability of an LT, the importance of its every link should be considered. We design a link importance incorporated failure probability measuring solution (LIFPMS) for multicast LTs under independent failure model and shared risk link group failure model. Based on the LIFPMS, we put forward the minimum failure probability (MFP) problem for the LT-OM scheme. Heuristic approaches are developed to address the MFP problem in elastic optical networks. Numerical results show that the LIFPMS provides an accurate metric for calculating the failure probability of multicast LTs and enhances the reliability of the LT-OM scheme while accommodating multicast services.

Citation Download Citation

Xin Li, Lu Zhang, Ying Tang, and Shanguo Huang "Link importance incorporated failure probability measuring solution for multicast light-trees in elastic optical networks," Optical Engineering 57(3), 036117 (30 March 2018). https://doi.org/10.1117/1.OE.57.3.036117

Received: 2 February 2018; Accepted: 9 March 2018; Published: 30 March 2018

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