Adaptive channel allocation for wireless PCN
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Soft QoS in Call Admission Control for Wireless Personal Communications
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A New Adaptive Channel Reservation Scheme for Handoff Calls in Wireless Cellular Networks
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Computer Communications
Call admission control for wireless personal communications
Computer Communications
Stochastic Graph Transformation Systems
Fundamenta Informaticae - SPECIAL ISSUE ON ICGT 2004
A dynamic QoS provisioning call admission control in cellular mobile using fuzzy logic
International Journal of Wireless and Mobile Computing
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In future personal communications networks (PCNs) supporting network-wide handoffs, new and handoff requests will compete for connection resources in both the mobile and backbone networks. Forced call terminations due to handoff call blocking are generally more objectionable than new call blocking. The previously proposed guard channel scheme for radio channel allocation in cellular networks reduces handoff call blocking probability substantially at the expense of slight increases in new call blocking probability by giving resource access priority to handoff calls over new calls in call admission control. While the effectiveness of a fixed number of guard channels has been demonstrated under stationary traffic conditions, with nonstationary call arrival rates in a practical system, the achieved handoff call blocking probability may deviate significantly from the desired objective. We propose a novel dynamic guard channel scheme which adapts the number of guard channels in each cell according to the current estimate of the handoff call arrival rate derived from the current number of ongoing calls in neighboring cells and the mobility pattern, so as to keep the handoff call blocking probability close to the targeted objective while constraining the new call blocking probability to be below a given level. The proposed scheme is applicable to channel allocation over cellular mobile networks, and is extended to bandwidth allocation over the backbone network to enable a unified approach to prioritized call admission control over the ATM-based PCN