Title

Control-level call differentiation in IMS-based 3G core networks

Document Type

Article

Source of Publication

IEEE Network

Publication Date

1-1-2011

Abstract

The 3GPP-defined IP Multimedia Subsystem is becoming the de facto standard for IP-based multimedia communication services. It consists of an overlay control and service layer that is deployed on top of IP-based mobile and fixed networks, in order to enable the seamless provisioning of IP multimedia services to 3G users. Service differentiation, which implies the network's ability to distinguish between different classes of traffic (or service) and provide each class with the appropriate treatment, is an important aspect that is considered in 3G networks. In this article, we present a critical review of existing service differentiation solutions and propose a new control-level call differentiation solution for IMS-based 3G core networks. The solution consists of a novel call differentiation scheme, enabling the definition of various categories of calls with different QoS profiles. To enable the support of such profiles, an extended IMS architecture, relying on two adaptive resource management mechanisms, is proposed. Furthermore, simulations are used to evaluate the system performance. Compared to existing service differentiation solutions, our solution offers several benefits, such as: flexible QoS negotiation mechanisms, control over many communication aspects as means for differentiation, and a dynamic and adaptive resource management strategy. © 2011 IEEE.

ISSN

0890-8044

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Volume

25

Issue

1

First Page

20

Last Page

28

Disciplines

Electrical and Computer Engineering

Keywords

3G Networks; Adaptive Resource Management; Call differentiation; Core networks; Critical review; De facto standard; Fixed networks; IMS architecture; IP multimedia subsystems; Multimedia communication services; Overlay control; QoS negotiation; Service differentiation; Service layers; Mobile telecommunication systems; Multimedia services; Multimedia systems; Natural resources management; Resource allocation; Telecommunication equipment; Wireless networks

Scopus ID

79953800027

Indexed in Scopus

yes

Open Access

no

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