End-to-End QoS Architecture and Inter-domain QoS Model across Multiple Domains

Providing end-to-end quality of service (QoS) guarantees in all-IP Networks is a challenging task that encompasses a set of multiple administrative domains. But from the existing proposed architecture point of view, mature solutions are not yet available for the provision of QoS across multiple domains administered by different organizations, especially under the FMC circumstance. So based on the researches of the contributions of many standard bodies to QoS, this paper presents an architecture that supports inter- domain QoS across the multi-provider domains, describes the full set of functions in the management, control and data planes. Then an inter-domain QoS model is proposed, which shows how requested QoS capabilities can be combined together using service level specifications (SLSs) agreed between adjacent domains to construct an appropriate end-to- end QoS path that is supported across multiple domains.