Call Admission Control Dimensioning for VoIP Traffic Over Wireless Access Networks: From Network to Application-Specific Perspective

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Admission control is a key issue for Quality of Service (QoS) provisioning in both wired and wireless communication networks. Providing QoS for voice traffic transmission over packet-based network is a crucial task, which requires development of accurate resource estimation models. In order to perform bandwidth saving and improve the naturalness of the voice service contemporary voice coding schemes are equipped with the functionality of voice activity detection and background noise transmission during inactive speech periods. The adoption of traditional ON-OFF traffic model may cause significant errors in estimating the bandwidth required to meet the performance bounds of aggregated traffic flow.