This paper studies the design and performance of the Probabilistic Priority (PP) packet scheduling algorithm to schedule packets. Unlike an earlier design that uses fractional arithmetic and prohibits large number of classes, we present an integer PP algorithm and show that PP is a special scheme of applying lottery scheduling to bandwidth allocation in a strict priority sense. We then propose ...

Unpredictable response time is a common problem in contemporary web servers. Long response delays substantially cut company revenues owing to the large number of aborted e-commerce transactions. This work presents an admission control model and a traffic scheduler scheme of the web server under a proportional differentiated service, embedding a time series predictor to estimate the traffic load...

The proportional differentiation model is a newly introduced approach for differentiated services networks. This paper proposes and evaluates a scheduling mechanism for the combined control of delay and throughput metrics, according to the proportional differentiation model. The scheme is based on the well known Little’s Law. A moving window averaging mechanism and an active queue management sc...

There exist a Model of Proportional Jitter Differentiated Service and Proportional Delay Differentiated Serivce, which provides proportional jitter or proportional delay between different classes. This first approach is very appropriated for high-speed networks because it does not require the implementation of the proportional jitter scheduling algorithms at all the routers in the network but o...

This paper proposes a method for scheduling and buffer management in differentiated services networks which is based on JoBS algorithm. JoBS differentiates traffic classes base on delay and loss rate. Furthermore, it supports both relative and absolute constraints. Nowadays with the expansion of Internet traffic and its diversified service requests, the focus is on requirement of new traffic us...

Most applications can adapt their coding techniques and sending rates according to the network congestion and the resource needed can be provided at the beginning of the transmission. So traditional Differentiated Services (DiffServ) model is too rigid to them. In this paper, we are seeking a balance between the relative DiffServ and the absolute DiffServ and propose a new Diffserv model, a rel...

MPLS is highlightened as the most promising technology for the integrated IP-over ATM backbone networks. Nowadays, one of the important practical issues in MPLS is the capability to provide Differentiated Services. For integrating IP and ATM with scalability, MPLS based ATM switch network can be available, especially for the fast Internet services adding Layer 3 routing module to the existing A...

This document contains a tutorial on the recent work in the area of offering services in the Internet. We cover the principles and some of the details of Integrated Services and Differentiated Services. We also explain the relationship to RSVP of each of these architectures. Finally, we draw some conclusions about the relationship of these architectures to SURFnet.