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New alternate routing scheme with endpoint admission control for low call loss probability in VoIP networks
Mandal, Sandipan Jasti, Amarnath Pendse, Ravi
Mandal, Sandipan
Jasti, Amarnath
Pendse, Ravi
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2007-04-27
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Mandal, Sandipan, Jasti, Amarnath & Pendse, Ravi . (2007). New alternate routing scheme with endpoint admission control for low call loss probability in voip networks. In Proceedings : 3rd Annual Symposium : Graduate Research and Scholarly Projects. Wichita, KS : Wichita State University, p.203-204
Abstract
Call Admission Control (CAC) is an extension to
Quality of Service (QoS) for voice traffic over IP and
prevents the over subscription of voice traffic. For real-time
delay-sensitive traffic such as voice, it is better not to initiate
a new voice session rather than to allow voice sessions to be
dropped or delayed later, causing intermittent impaired QoS
and resulting in customer dissatisfaction. Dynamic routing
mechanisms can be integrated with CAC to further extend the
capabilities of QoS for VoIP traffic. In dynamic routing
mechanisms, probe packets are sent to sense the congestion
level of the network and according to the defined threshold,
routes are chosen dynamically. CAC is therefore a
deterministic and informed decision that is made before a
voice call is established to provide suitable QoS for the new
call.
All of the dynamic routing mechanisms have some issues
in selecting random routes. This includes not considering
number of hops, not doing admission threshold test,
calculating all possible paths. In this research work, authors
propose a new dynamic routing scheme, which considers a
route history table with endpoint admission control. The main
objectives of proposed approach are to increase the call
admission probability, make call establishment time faster
and save valuable CPU resources. Performance of the
proposed scheme with respect to other dynamic routing
schemes is studied using a mathematical/analytical model.
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Description
Paper presented to the 3rd Annual Symposium on Graduate Research and Scholarly Projects (GRASP) held at the Hughes Metropolitan Complex, Wichita State University, April 27, 2007.
Research completed Department of Electrical and Computer Engineering, College of Engineering.
Research completed Department of Electrical and Computer Engineering, College of Engineering.
Publisher
Wichita State University. Graduate School.
Journal
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GRASP
v.3
v.3