Overlay multicasting technology is now considered as a promising alternative to the native IP multicasting. While many studies are currently focused on how to build an overlay tree/mesh on top of conventional networks in a self-organized fashion, only limited attention has been directed toward QoS provisioning. QoS can be provisioned by leveraging the implementation of differentiated services i...

It is now quite agreed that the IP layer should provide more sophisticated services than the simple best-effort service to meet the application’s quality of service requirements. Different proposals for improving the IP stack have been proposed but their deployment on experimental network shows different scaling problems. In this paper we present a new differentiated service scheme called “Equi...

The integration of renewable sources poses challenges at the operational and economic levels of the power grid. In terms of keeping the balance between supply and demand, the usual scheme of supply following load may not be appropriate for large penetration levels of uncertain and intermittent renewable supply. In this paper, we focus on an alternative scheme in which the load follows the suppl...

In paper we present an overview of recent work on resource pricing for differentiated services in the Internet. This approach is based upon encouraging cooperation between the end-systems and the network by use of the correct feedback signals. These signals reflect the congestion shadow prices at a resource, and their use means then even ‘selfish’ end-systems, acting in their own best interests...

Architectures for Internet quality of service (QoS) have been under discussion for over a decade and, with the commercialization of the Internet, the topic has become increasingly important. This paper gives a brief background and history of QoS for the Internet, then introduces and motivates the Differentiated Services (Diffserv) approach. The major advantages of the Diffserv approach are that...

In order to support emerging network businesses, such as Voice-over-IP (VoIP), virtual learning, video conferencing, and telemedicine, the Internet has to provide classes of service that are better than traditional ‘best-effort’ service. In computer networks, Quality of Service (QoS) is defined as the mechanisms that allow differentiation of network services based on their unique service requir...

One of the most challenging issues facing designers of wireless and mobile networks is the proper provisioning of Quality of Service (QoS), and is probably the most difficult problem in terms of meeting users' QoS requirement at various mobility levels. In this paper, we propose a seamless QoS handling mechanism for diverse mobility situations. This architecture consists of a Differentiated Ser...

To support quality of service over the Internet, the Differentiated Services model has been proposed recently by the IETF. In the Differentiated Services model, ¤ows with similar QoS requirements are aggregated into classes in order to counter the scalability problem faced by the Integrated Services model. There have been several models proposed for service differentiation. The relative differe...

Diffserv architecture is pointed out as a promising solution for the provision of QoS in the Internet in a scalable manner. The main objective of this work is to test, evaluate and discuss, from a practical point of view, two platforms for implementing Diffserv services: one developed at ICA/EPFL for the Linux OS and the other based on Cisco Systems routers. After comparing the configuration st...

IP in the edge and ATM in the core are commonplace in today’s internetworks. The IETF has proposed a new Quality of Service (QoS) mechanism namely Differentiated Services (DiffServ) for IP networks. On the other hand, QoS is an inherent feature in ATM. It is imperative that IP and ATM QoS interoperate efficiently to provide an end-to-end service guarantee. DiffServ provides a class of service n...