Based on the need for distributed end-to-end quality management for next generation Internet services, this paper presents a ready-to-deploy quality assessment concept for the impact of the network on the service performance. The proposed Network Utility Function (NUF) combines the observed network utility at the inlet and the outlet. Thus, it captures the damping effect of the network onto user-perceived quality from an end-to-end perspective. As opposed to incomprehensible QoS parameters such as delay and loss, the NUF is highly intuitive due to its mapping to a simple value between 0 and 1. We demonstrate the capabilities of the proposed concept for a special NUF, the Throughput Utility Function (TUF) by realistic simulation.

Ett nytt sätt att uttrycka nätverkets inflytande på tjänstekvaliten (skala från 0 till 100). Undersökt scenario: trace-driven OPNET simulering av videokonferenser och TCP strömmar via flaskhalsar (t ex ADSL länkar).