,PRM:A Resource Management Framework for Policy-driven QoS Control in Enhanced Internets

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The Inteet has evolved from a tra-ditional best-effort delivery data network into an en-hanced Inteet that can provide a certain Qualityof Service(QoS) mechanisms for applications.How-ever,these QoS mechanisms usually do not take policyfactors into account such as priority and time-of-day.The paper presents a Resource Management Frame-work for Policy-driven QoS control (PRM) in en-hanced inteets,which consists of four components:Domain Policy Controller(DPC) resides an adminis-trator domain,Border Resource Manager(BRM) re-sides between adjacent domains,Interior ResourceManagers(IRM) in each router between two BRMswithin the same domain,and Endsystem ResourceManager(ERM) in charge of end-node/host router re-sources.We first introduce challenges and demandsfacing the enhanced inteets,then give a formalizeddefinition of policy and describe the functions and in-teraction of components of PRM.Specifically we takeQoS-pricing policy used in a Diff-Serv environmentas an example to illustrate the operational phases of PRM.
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