SHERPA: A SDN Multipath Approach to Eliminate Resilience Impact on Video Streams

In content delivery network, Quality of Experience (QoE) provides two major performance indicators that are availability and continuity of service. As a consequence, network robustness has become a major concern for network operators. TDF operates a traditional transport network for video and audio...

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Bibliographic Details
Main Authors: Colombo, Constant, Lepage, Francis, Kopp, Rene, Gnaedinger, Eric
Format: Conference Proceeding
Language:English
Subjects:
Bandwidth
Computer architecture
delay constrained
Delays
disjoint paths
QoE
Quality of experience
real-time stream
Real-time systems
Robustness
SDN
seamless
Software defined networking
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Summary:In content delivery network, Quality of Experience (QoE) provides two major performance indicators that are availability and continuity of service. As a consequence, network robustness has become a major concern for network operators. TDF operates a traditional transport network for video and audio transport. Any failure on the network causes a recovery time implying loss and an impact in the content viewing. This illustrate that service continuity is a direct consequence of network availability. This work aims to propose a Software Defined Networking (SDN) architecture in which the controller uses its knowledge of the performance and bandwidth allocation to compute redundant disjoint paths. Two maximally link-independent paths carrying the same stream over the network are deployed. When a failure occurs, at least one of the paths is still active, eliminating any discontinuity on the content viewing. This paper is focused on the Path Computation Element, which is based on Suurballe-Tarjan algorithm.
ISSN:2576-7828
DOI:10.1109/ICCT.2018.8600180