Threshold Priority Policy for Channel Assignment in Cellular Networks
IEEE Transactions on Computers - Special issue on mobile computing
Predictive and adaptive bandwidth reservation for hand-offs in QoS-sensitive cellular networks
Proceedings of the ACM SIGCOMM '98 conference on Applications, technologies, architectures, and protocols for computer communication
A Rate-Based Borrowing Scheme for QoS Provisioning in Multimedia Wireless Networks
IEEE Transactions on Parallel and Distributed Systems
Call Admission Control Using the Moving Pattern of Mobile User for Mobile Multimedia Networks
LCN '02 Proceedings of the 27th Annual IEEE Conference on Local Computer Networks
An adaptive bandwidth reservation scheme for high-speed multimedia wireless networks
IEEE Journal on Selected Areas in Communications
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Multimedia applications are much more sensitive to the quality of service(QoS) than text-based ones due to their data continuity. In order to provide a fast moving mobile host(MH) supporting multimedia applications with a consistent QoS, an efficient call admission mechanism is in need. This paper proposes the 2-level call admission control(2LCAC) scheme based on a call admission scheme using the priority to guarantee the consistent QoS for mobile multimedia applications. The 2LCAC consists of the basic call admission and advanced call admission; the former determines call admission based on bandwidth available in each cell and the latter determines call admission by utilizing delay tolerance time(DTT), priority queue(PQueue), and upgrade queue(UpQueue) algorithms. In order to evaluate the performance of our scheme, we measure the metrics such as the blocking probability of new calls, dropping probability of handoff calls, and bandwidth utilization. The result shows that the performance of our scheme is superior to that of existing schemes such as complete sharing policy(CSP), guard channel policy(GCP) and adaptive guard channel policy(AGCP).