On Extending IMS Services to WLANs

32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI:10.1109/LCN.2007.137

A. Hasswa, A. Taha, H. Hassanein

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引用次数: 10

Abstract

The IP multimedia subsystem (IMS) provides a framework that accommodates current and future services in wired and wireless networks. However, IMS does not handle non-3G elements such as wireless local area networks (WLANs). In order to provide interconnection at the service layer between 3G and WLANs, interworking between IMS and WLAN is necessary. Extending IMS beyond 3G to WLANs is a crucial step towards the evolution of a seamless universal next generation wireless network, commonly known as 4G. In this paper, a novel architecture for service layer interworking between WLAN and 3G is presented. The architecture takes into consideration the interaction of WLAN Application SIP servers with the IMS call session control functions (CSCFs) and the extensibility of application servers (ASs) beyond the core IMS network. A WLAN AS is introduced into the IMS network and an SIP server into the WLAN. These act as interworking arbitrators and communicate with each other to provide service and session continuity. The main advantage of this architecture is its feasibility within the standard. It is also non-intrusive to the IMS core or the WLAN.

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关于将IMS业务扩展到wlan

IP多媒体子系统(IMS)提供了一个框架，可以在有线和无线网络中容纳当前和未来的业务。但是，IMS不能处理非3g元素，如无线局域网(wlan)。为了在3G和WLAN之间提供业务层的互联，必须实现IMS和WLAN之间的互联。将IMS从3G扩展到wlan是向无缝通用下一代无线网络(通常称为4G)发展的关键一步。本文提出了一种新的WLAN与3G业务层互通的体系结构。该体系结构考虑了WLAN应用SIP服务器与IMS呼叫会话控制功能(CSCFs)的交互以及应用服务器(as)在核心IMS网络之外的可扩展性。在IMS网络中引入一个WLAN自治系统，在WLAN网络中引入一个SIP服务器。它们充当相互协作的仲裁器，并相互通信以提供服务和会话连续性。这种体系结构的主要优点是它在标准内的可行性。它对IMS核心或WLAN也不具有侵入性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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32nd IEEE Conference on Local Computer Networks (LCN 2007)

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