Wireless packet-scheduling is a crucial component for providing quality of service (QoS) in CDMA networks. In this paper, we propose channel-adaptive rate-scheduling based on Generalized Processor Sharing (CAGPS) to guarantee minimum service rate and to provide proportional fairness among heterogeneous multimedia traffic for QoS differentiation. The CA-GPS scheduler assigns different GPS weight...

This paper presents a new overlay-based congestion management mechanism that provides the proportional fairness among competing aggregates and the improvement in packet loss ratio for Differentiated Services (DiffServ) network. In the proposed scheme, a QoS control packet is sent from the ingress to the egress router every fixed time interval. The ingress router employs a simple additive increa...

In this paper, we proposed a DiffServ based multicast media gateway, which is called Adaptive Differentiated Service Multicast Gateway (ADMG), to achieve the QoS guarantee and scalability considerations for multimedia presentation systems. The purpose of the ADMG system is twofold: (1) improve the bandwidth utilization by doing bandwidth reservation based on the layered-media aggregation and (2...

Network quality of service is traditionally thought to be provided by a combination of scheduling in the network nodes to enforce a capacity sharing policy and traffic controls to prevent congestion that could annihilate that policy. The work presented herein is instead based on an end-to-end argument: A capacity sharing policy is enforced by traffic controls in the hosts at the edges of the ne...

The world of telecommunications continues to provide radical technologies. Offering the benefits of a superior television experience at reduced long-term costs, IPTV is the newest offering. Deployments, however, are slow to be rolled out; the hardware and software support necessary is not uniformly available. This paper examines the challenges in providing IPTV services and the limitations in d...

Recent Linux kernels ooer a wide variety of traac control functions, which can be combined in a modular way. We have designed support for Diierentiated Services based on the existing traac control elements, and we have implemented new components where necessary. In this document we give a brief overview of the structure of Linux traac control, and we describe our prototype implementation in mor...

Voice over IP and other jitter sensitive applications have raised the demand for Quality of Service guarantees in the Internet. The traffic must be classified and prioritized according to application specific needs. The Differentiated Services framework provides means for stateless low-cost classification. This paper summarizes the IETF's DiffServ Internet Draft.

1 Problem statement The experiments described in this report address the problem of Quality of Service (QoS) support in IP networks. Experiments focus on the Differentiated Services (diffserv) QoS architecture specified in RFC 2475. The Diffserv architecture is based on the idea of classifying IP flows into aggregates and differentiating the service given to the aggregates rather than to flows ...

This paper describes the Network Modeler application that helps differentiated services network design, planning and configuration testing. This application allows a user to draw a network, configure it, and evaluate its performance through simulation. A simple scenario is presented, showing the potentialities of the Network Modeler, the advantages of using differentiated services, and proving ...