Research Article
Policy-Based Middleware for QoS Management and Signaling in the Evolved Packet System
@INPROCEEDINGS{10.1007/978-3-642-01802-2_9, author={Richard Good and Fabricio Gouveia and Thomas Magedanz and Neco Ventura}, title={Policy-Based Middleware for QoS Management and Signaling in the Evolved Packet System}, proceedings={MobileWireless Middleware, Operating Systems, and Applications. Second International Conference, Mobilware 2009, Berlin, Germany, April 28-29, 2009 Proceedings}, proceedings_a={MOBILWARE}, year={2012}, month={5}, keywords={PCC IMS End-to-end Inter-domain Testbed}, doi={10.1007/978-3-642-01802-2_9} }- Richard Good
Fabricio Gouveia
Thomas Magedanz
Neco Ventura
Year: 2012
Policy-Based Middleware for QoS Management and Signaling in the Evolved Packet System
MOBILWARE
Springer
DOI: 10.1007/978-3-642-01802-2_9
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.