Protection Schemes for Two Link Failures in Optical Networks

TL;DR

This paper introduces novel network protection schemes, NPS2-I and NPS2-II, using network coding to safeguard optical networks against two simultaneous link failures, enhancing reliability with minimal capacity overhead.

Contribution

The paper presents new protection schemes employing network coding for dual link failure resilience in optical networks, including encoding and decoding processes.

Findings

Effective protection against two link failures demonstrated

Reduced capacity overhead achieved through coding techniques

Protection schemes applicable to real-world optical networks

Abstract

In this paper we develop network protection schemes against two link failures in optical networks. The motivation behind this work is the fact that the majority of all available links in an optical network suffer from single and double link failures. In the proposed network protection schemes, NPS2-I and NPS2-II, we deploy network coding and reduced capacity on the working paths to provide backup protection paths. In addition, we demonstrate the encoding and decoding aspects of the proposed schemes.