A Modular Approach to Mobile QoS Signalling - Motivation, Design & Implementation
Key: BKSS02-1
Author: Nicole Berier, Martin Karsten, Jens Schmitt, Ralf Steinmetz
Date: December 2004
Kind: @article
Publisher: Kluwer
Abstract: In order to support mobile multimedia applications in next generatio n wireless IP-based net-works, it is necessary to deliver seamless voice, video and data at high quality. Therefore, session mobility and Quality of Service (Qo S) for mobile end systems are required. Within this article, the authors point o uta new way to approach the problem. Instead of tightly coupling a modified QoS signaling mechanism with a certain mobility mechanism, a more generic and long-t erm solution is proposed and exemplified on thebasis of existing IETF protocols. The connection-less IP network layer is enhanced by a lightweight and truly opt ional connection-oriented mobile network service, which offers the possibility t o establish softstate unicast connections at the network layer. Hence, a connect ion-oriented network service is available within a radio access network (RAN) ar chitecture to all end systems - mobile or fixed - independent of theapplication. Thereby, it is possible to integrate QoS and connectivity signaling for mobile end systems, as well as other connection-oriented services like explicit routing or load balancing.

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