Adaptive Multi-Path SnF Scheduling Method for Delay-Sensitive Transfers Across Inter-Datacenter Optical Networks

Traffic fluctuations make conventional end-to-end delay-sensitive (DS) transfers difficult to fully utilize the residual bandwidth in the inter-datacenter networks. In this paper, we introduce datacenter storage and multi-path routing into DS transfers, and present a scheduling method. On one hand, it can split data into shorter segments and route them through multiple paths. On the other hand, it leverages temporary storage at intermediate sites to segment each path into sub-paths when provisioning the end-to-end lightpath fails. Studies show that compared with the state-of-the-art scheduling methods, the proposed method can accommodate more DS transfers, shorten delivery time and accelerate DS transfers efficiently.