Transmission of high quality video over the Internet faces many challanges including unpredictable packet loss characteristics of the current Internet and the heterogeneity of receivers in terms of their bandwidth and processing capabilities. To address these challanges, we propose an architecture in this paper that is based on the temporally scalable and error resilient video coding mode of th...

This document describes terminology for the benchmarking of devices that implement traffic control using packet classification based on defined criteria. The terminology is to be applied to measurements made on the data plane to evaluate IP traffic control mechanisms. Rules for packet classification can be based on any field in the IP header, such as the Differentiated Services Code Point (DSCP...

A problem statement is first provided. Then, the document describes example applications scenarios identified by Service Providers where existing MPLS Traffic Engineering mechanisms fall short and Diff-Serv-aware Traffic Engineering can address the needs. The detailed requirements that need to be addressed by the technical solution are also reviewed. Finally, the document identifies the evaluat...

This paper describes the hardware implementation of Simple Integrated Media Access (SIMA) access node. SIMA introduces Quality of Service (QoS) in IP networks by using the IPv4 Type of Service (TOS) field as priority and real-time indication field. Hardware acceleration is used to speed up the SIMA cal-culations.

Individualized services are common in distributed computing systems: Consumers demand custom solutions and service providers tailor their offering. In negotiating a service contract, providers and consumers frequently fail in identifying the optimal combination of non-functional properties and price. A key reason is that negotiators simultaneously try to create and claim value leading to strate...

Today, two major trends in networking can be observed. First, now that mobile telephony is a fact, also Internet connectivity is moving towards mobile access. Second, real time applications, requiring QoS, are offered to Internet users. This paper will propose a mechanism for the Internet to accommodate both trends. MPLS will be used to set up mobile connections between communicating nodes. Wit...

Differentiated Services (DiffServ) are seen as the technology to support Quality of Service (QoS) in IP networks in a scalable manner by allowing traffic aggregation within the engineered traffic classes. In DiffServ domains, admission control additionally needs to be employed in order to control the amount of traffic into the engineered traffic classes so as to prevent overloads that can lead ...

Inside DiffServ, the Assured Forwarding per hop behavior defines a service that guarantees the contracted target rate to the users and allows consuming more bandwidth if the network load is low. In this paper we perform an experimental study, whose key contribution is that current techniques and commercial equipment do not meet the goals of the AF PHB service in a scalable way.

One of the most interesting applications of single–sided Quality of Experience (QoE) metrics is their use in improving the quality of the service, as perceived by the user. This can be done either at the application level – by for example changing the encoding in use, or the level of error correction applied – or at the network level, for instance by choosing a different DiffServ marking strate...