ERPS: an enhanced rate-proportional server

As an important mechanism to provide QoS guarantee in packet-switched networks, queueing scheduling algorithms have been widely researched. The rate-proportional server (RPS) is a good fluid model that covers the general processor sharing (GPS) models. We can design corresponding packet-level queueing scheduling algorithms through choosing different system potential correction function of RPS. We present an enhanced rate-proportional server (ERPS), which gives the upper and lower bounds of system potential correction function and compute corresponding fairness index. Thus, we can easily devise the needed packet-level queueing scheduling algorithm based on ERPS. We also give a packet-level queueing scheduling algorithm based on ERPS.