NDLI: Improving quality of experience in wireless VoIP through novel call scheduling

Content Provider	Springer Nature Link
Author	Lambris, Lambros Djouvas, Constantis
Copyright Year	2011
Abstract	In the last few years we have experienced a dramatic increase in the use of IP networks for voice applications (VoIP) over wireless networks due to increased bandwidth availability and enhanced device capabilities. Since demand often exceeds available capacity, Call Admission Control mechanisms are in place to prevent the uncontrolled usage of bandwidth. Through the use of an intermediary gateway, VoIP calls are in many cases terminated to a normal landline or cellphone; the capacity of such a gateway is also a finite resource since the number of users can vary significantly as many are mobile. In this article we propose an enhanced scheme that aims to manage access to the lines available so that they are used in a fair manner and utilized to the highest degree possible. This management is facilitated by enhancing a proxy implementation with a number of call scheduling policies. The ability to satisfy pending call requests as soon as lines become available, results in increased user service satisfaction. Moreover, it increases line utilization which is crucial from an economic viewpoint. The ultimate goal is to improve Quality of Experience which is deemed as highly important especially considering that wireless network users experience opportunistic and intermittent connectivity.
Starting Page	1905
Ending Page	1916
Page Count	12
File Format	PDF
ISSN	10184864
Journal	Telecommunication Systems
Volume Number	52
Issue Number	4
e-ISSN	15729451
Language	English
Publisher	Springer US
Publisher Date	2011-06-29
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Call admission control Voice over IP Call scheduling Quality of service Quality of experience Line utilisation Business Information Systems Computer Communication Networks Artificial Intelligence (incl. Robotics) Probability Theory and Stochastic Processes
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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