Towards QoE-driven multimedia service negotiation and path optimization with software defined networking

This paper presents motivation and ongoing work towards a system for Quality of Experience (QoE)-driven path assignment for multimedia services. The system goal is to enable negotiation of service and network communication parameters between end-users and to assign the network paths that are used for delivering multimedia flows according to the agreed service configuration. The key concept behind the system is a centralized multi-user optimization of the path assignments, which maximizes QoE by taking into account service utility functions, network topology, link capacities, and delay. Based on the output of the optimization process, the system implementation uses the OpenFlow to set up forwarding paths for the network elements.