An architecture and admission control algorithm for multi-precedence voice over IP (VolP) calls

Uzunalioğlu, Hüseyin; Das, Kamala P.; Houck, David J.

doi:10.1109/milcom.2004.1494945

Cited by 2 publications

(1 citation statement)

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“…As a result, the blocking probability will oscillate between 0, 25, and 100%, as shown in Section 5. To make the policy function more adaptive to the traffic load, the call blocking probability can be changed dynamically according to the measured utilization [23]. This new policy function is referred to as the dynamic policy function.…”

Section: A Measurement-based Admission Control Algorithmmentioning

confidence: 99%

Call admission control for voice over IP

Uzunalioğlu¹,

Houck²,

Wang³

2006

Int J Communication

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SUMMARYVoice over Internet protocol (VoIP) is a technology that enables the transmission of voice over an IP network. Recent years have witnessed heavy investment in this area in the commercial world. For VoIP to replace Public Switched Telephone Network (PSTN), it should provide voice quality comparable to circuit-switched PSTN networks. This paper addresses the mechanisms to guarantee VoIP quality of service (QoS). The focus is given to the call admission control, which blocks voice calls when the required resources are not available to guarantee the QoS for the call. We review call admission control approaches that can be applied to VoIP, and describe the advantages and disadvantages of each approach. In the second part of the paper, we present a measurement-based admission control scheme that achieves QoS in an efficient and scalable manner. The scheme uses voice traffic load measurements at each router link to compute link-level blocking policies for new call attempts. Then, these policies are translated into pathlevel blocking policies, which are applied to new call set-up requests. The performance of the scheme is presented for single and multiple-priority voice calls.

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Section: A Measurement-based Admission Control Algorithmmentioning

confidence: 99%