Abstract
The Universal Mobile Telecommunications System (UMTS) offers IP-based multimedia applications and services with end-to-end Quality of Service (QoS) guarantee. The key component providing these services is the IP Multimedia Subsystem (IMS) that uses Service-Based Local Policy (SBLP) management for QoS control. To support end-to-end QoS, the UMTS IMS network should be scalable, reliable and flexible in policy deployment and enforcement, characteristics that are not found in single-domain policy architecture. A hybrid policy architecture is proposed, in which a hierarchical architecture is applied to the multi-domain environment in a single operator UMTS IMS network, while a peering architecture is employed in a multi-operator UMTS IMS network. The proposed multi-domain policy architecture potentially minimizes the session setup delay and policy exchange traffic while maximizing network scalability.
Résumé
La norme UMTS permet d’offrir une garantie de qualité de service aux applications multimédias à base de protocole IP. Le composant clé en la matière est le sous-système multimédia IP (IMS) qui utilise pour la maîtrise de la qualité de service une gestion de règle locale. Si l’on veut gérer une qualité de service de bout en bout, le réseau IMS de l’UMTS doit être extensible, fiable et flexible en matière de mise en œuvre de règles, toutes caractéristiques absentes d’une architecture de politique mono-domaine. On propose donc une architecture de règles hybride, dans laquelle on applique une architecture hiérarchique à l’environnement multi-domaine de réseau IMS UMTS d’un opérateur unique et une architecture pair à pair pour un réseau IMS UMTS multi-opérateur. L’architecture de règles multi-domaine ainsi proposée devrait réduire le délai d’établissement de session ainsi que le trafic dû aux échanges de règles, tout en améliorant l’extensibilité du réseau.
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Zhuang, W., Gan, Y.S., Gao, Q. et al. Multi-domain architecture for policy management inumts ip multimedia subsystem. Ann. Télécommun. 59, 25–37 (2004). https://doi.org/10.1007/BF03179672
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DOI: https://doi.org/10.1007/BF03179672
Key words
- Networking
- UMTS
- Quality of service
- Multimedia service
- Network architecture
- Peer to peer networking
- Hierarchical system
- Decision rule