Abstract
The 3GPP are currently finalizing their Evolved Packet System (EPS) with the Evolved Packet Core (EPC) central to this framework. The EPC is a simplified, flat, all IP-based architecture that supports mobility between heterogeneous access networks and incorporates an evolved QoS concept based on the 3GPP Policy Control and Charging (PCC) framework. The IP Multimedia Subsystem (IMS) is an IP service element within the EPS, introduced for the rapid provisioning of innovative multimedia services. The evolved PCC framework extends the scope of operation and defines new interactions – in particular the S9 reference point is introduced to facilitate inter-domain PCC communication. This paper proposes an enhancement to the IMS/PCC framework that uses SIP routing information to discover signaling and media paths. This mechanism uses standardized IMS/PCC operations and allows applications to effectively issue resource requests from their home domain enabling QoS-connectivity across multiple domains. Because the mechanism operates at the service control layer it does not require any significant transport layer modifications or the sharing of potentially sensitive internal topology information. The evolved PCC architecture and inter-domain route discovery mechanisms were implemented in an evaluation testbed and performed favorably without adversely effecting end user experience.
The original version of this chapter was revised: The copyright line was incorrect. This has been corrected. The Erratum to this chapter is available at DOI: 10.1007/978-3-642-01802-2_30
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© 2009 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering
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Good, R., Gouveia, F., Magedanz, T., Ventura, N. (2009). Policy-Based Middleware for QoS Management and Signaling in the Evolved Packet System. In: Bonnin, JM., Giannelli, C., Magedanz, T. (eds) MobileWireless Middleware, Operating Systems, and Applications. MOBILWARE 2009. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 7. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-01802-2_9
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DOI: https://doi.org/10.1007/978-3-642-01802-2_9
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