NDLI: A Simple Signaling Mechanism for Seamless Inter-Operator Mobility in All-IP Networks

Content Provider	IEEE Xplore Digital Library
Author	Zaghloul, S. Jukan, A.
Copyright Year	2008
Description	Author affiliation: Tech. Univ. Carolo-Wilhelmina zu Braunschweig, Braunschweig (Zaghloul, S.; Jukan, A.)
Abstract	Recent advances in wireless all-IP telecommunications made it possible for the operators to offer more sophisticated services with mixtures of high quality audio, video, data, and interactive applications. However, mobility still poses a challenge for quality of service (QoS) maintenance in such networks as it typically causes large signaling delays which not only result in poor service quality but also in service interruptions. In this paper, we propose a standard-friendly proactive signaling mechanism that minimizes handover delay between access gateways for intra-and inter-operator mobility scenarios. Based on the current standard framework, which was proposed to allow services in the Internet multimedia subystem (IMS) to authorize and control QoS in the Internet and radio tiers, we provide detailed signaling flows and evaluate our mechanism using delay budgets and signaling loads. We show that our method offers measurable delay savings relative to the current systems. We also analyze the signaling overhead of our mechanism using a Markov chain model. Our results related to the signaling delay and load give us confidence that our method can lead to higher perceived quality, more intelligent network selections, and seamless network convergence.
Starting Page	381
Ending Page	385
File Size	514790
Page Count	5
File Format	PDF
ISBN	9781424414567
e-ISBN	9781424414574
DOI	10.1109/ccnc08.2007.91
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-01-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radio control Quality of service Radio network Delay Network servers Radio access networks Authorization Control systems IP networks Web and internet services
Content Type	Text
Resource Type	Article

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