Dynamic QoS Adaptation Using COPS and Network Monitoring Feedback

Abstract

Abstract. This paper presents an approach to handle out of profile traffic using Common Open Policy Service and network monitoring feedback. The proposed approach is based on monitoring and reporting information sent by bandwidth monitors installed on each node of a Diffserv Domain. A monitor interacts with Policy Decision Point. This later, depending on the network state, pushes p olicy decision rules to the Policy Enforcement Point in order to accept, remark or drop out -of-profile traffic dynamically. This allows a dynamic reallocation and management of network resources based on current network state and applications QoS requirements. An implementation and a performance evaluation of the dynamic QoS adaptation framework using a Java COPS and a Linux-based network testbed are also presented.

On Enhancing Diffserv Architecture by Dynamic Policy Provisioning Using Network Feedback

“…Our model is applied to video traffic that make use of available bandwidth through source bit rate adaptation. To enhance this model, we have proposed in [2] a new approach to handle dynamicaJly out-of-profile traffic when entering the Diffserv domain by regarding network state. In this architecture, out-of-profile traffic is treated differently each time i.e.…”

Routing Based Feedback Towards Applications in Mobile Ad Hoc Networks

“…In fact, applications should be able to adapt their behaviour to cope with changes occurring in network conditions. This is true for wired networks [18], and even more for ad hoc networks [11]. These techniques allow applications to keep correct user-perceived QoS even when the available network resources vary during the session.…”