Coordinating IP QoS and Traffic Engineering for Guaranteeing Graceful QoE Degradation

Increasing operational complexity becomes the major technical challenge for practically deploying and managing mechanisms to guarantee acceptable real-time SLAs. This paper exploits a cost-effective coordinated approach that combines OSPF-TE with new advances in configuring existing active queue management algorithm. Extensive numerical simulation result suggests that a simple, coordinated approach, in keeping with the Internet paradigm, can achieve increased load for a given VoIP quality level and graceful degradation of Quality of experience (QoE) in presence of network congestion.