QoE provisioning system for VoIP and video streaming using software-defined networking and IOTA micropayment

This paper presents a novel QoE provisioning system with micropayment for Voice of Internet Protocol (VoIP) and video streaming services (QmV2). QmV2 leverages Software Defined Networking (SDN) to provide guaranteed QoE and the distributed ledger IOTA technology micropayment. More specifically, QmV2’s SDN controller has an innovative QoE calculation mechanism utilizing Mean Opinion Score (MOS) that considers service flow monitoring parameters, including packet loss rate and delay. Upon a QoE request and receiving the IOTA payment, QmV2 can provide the requested QoE for the service flow. We have implemented and evaluated QmV2 using the POX SDN controller, the network emulator Mininet-WiFi with VoIP and video streaming. The results confirm QmV2 delivers satisfactory user experiences (i.e., aligned with the guaranteed MOS values) for VoIP and video streaming applications with the confirmed IOTA payment.