Application-Level QoS Negotiation and Signaling for Advanced Multimedia Services in the IMS

Authors:
L. Skorin-Kapov;M. Mosmondor;O. Dobrijevic;M. Matijasevic
Affiliations:
Ericsson Nikola Tesla, Zagreb;-;-;-
Venue:
IEEE Communications Magazine
Year:
2007

Citing 0
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Abstract

The IP multimedia subsystem (IMS) has been recognized as a reference next-generation network architecture for offering multimedia services over an Internet Protocol (IP)-based infrastructure. One of the key benefits of the IMS is efficient and flexible introduction of new services and access to third-party application providers, thanks to standard interfaces and standardized service capabilities. To support novel media-rich applications across a wide range of user devices and access networks, IMS must support negotiable quality of service (QoS) for IP multimedia sessions. In this article, we describe the application-level QoS signaling as specified by the 3GPP and propose some enhancements based on advanced QoS parameter matching and optimization functionality to be included along the signaling path. We outline various signaling flow scenarios and discuss them in the context of a case study involving an IMS-supported 3D virtual environment, featuring a treasure-hunt-like game.