Performance Evaluation of Video Streaming Service Chains in Softwarized 5G Networks with Task Graph Reduction
29th International Teletraffic Congress (ITC 29), Genoa, Italy, (2017)Abstract
In the last years, recent advances in wireless communications and node processing capabilities together with the definition of new paradigms for network softwarization based on the adaption of cloud computing is evolving. With the 5th generation of mobile network enormous benefits for service providers as well as private persons arise. Scalability of services by segmentation into several components helps cloud providers to monitor and analyze their services. Services to be provided to the 5G network users are divided into independent components and instantiated in remote clouds or at the edge of the network. The service itself is composed of the components to a so-called service chain.
To understand the performance, key influence factors are commonly examined for each component.
To analyze these influence factors, analytical models by means of task graph reduction can be used. In this work, each component is described by a task graph node and a processing time distribution. Out of all nodes, a task graph is created and reduced receiving one probability density function characterizing a performance evaluation of the whole service chain. With the example of cloud based video streaming, video transmission on a 5G network is considered as use case and analyzed with a created tool.
