Using virtual SIP links to enable QoS for signalling

Kist, Alexander A. and Harris, Richard J. (2003) Using virtual SIP links to enable QoS for signalling. In: 11th IEEE International Conference on Networks (ICON 2003), 28 Sept - 1 Oct 2003 , Sydney, Australia.

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The session initiation protocol (SIP) was used on a large scale as a session signalling protocol to provide legacy as well as new services. The 3rd Generation Partnership Project (3GPP) has decided to use the SIP protocol in the IP multimedia subsystem of future Universal Mobile Telecommunications System (UMTS) networks. If the SIP protocol is used in carrier grade networks, quality of service (QoS) observations are necessary to ensure quality service provisioning. This, in particular, is important since signalling will use multiservice IP transport networks and share its resources with other services. This paper proposes the concept of virtual SIP links (VSLs) that connect two SIP nodes. VSLs can be used to enable QoS provisioning in SIP signalling overlay networks. Methodologies are introduced to specify, define and dimension these virtual connections. The VSL specification uses the well-known concept of leaky buckets. Simple methodologies are established that are based on known results, to calculate message loss probabilities (MLPs) in leaky buckets. A simple, but efficient, queueing scheme is introduced that reduces the required network resources. Simulation results are given to validate the used models and to underline performance advantages for connections that use VSLs.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version deposited in accordance with the copyright policy of the publisher.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Electrical, Electronic and Computer Engineering
Date Deposited: 02 Apr 2010 23:46
Last Modified: 24 Mar 2014 02:59
Uncontrolled Keywords: 3GPP, 3rd Generation Partnership Project, IP multimedia subsystem, QoS, UMTS, universal mobile telecommunications system, message loss probabilities, multiservice IP transport networks, quality of service, queueing scheme, session initiation protocol, session signalling protocol, virtual SIP links
Fields of Research : 10 Technology > 1005 Communications Technologies > 100503 Computer Communications Networks
Socio-Economic Objective: B Economic Development > 89 Information and Communication Services > 8901 Communication Networks and Services > 890101 Fixed Line Data Networks and Services

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