CAC (Call Admission Control) plays a significant role in providing QoS (Quality of Service) in mobile wireless networks. In\r\naddition to much research that focuses on modified Mobile IP to get better efficient handover performance, CAC should be\r\nintroduced toMobile IP-based network to guarantee the QoS for users. In this paper, we propose a CAC scheme which incorporates\r\nmultiple traffic types and adjusts the admission threshold dynamically using fuzzy control logic to achieve better usage of resources.\r\nThe method can provide QoS inMobile IPv6 networks with few modifications on MAP (Mobility Anchor Point) functionality and\r\nslight change in BU (Binding Update) message formats. According to the simulation results, the proposed scheme presents good\r\nperformance of voice and video traffic at the expenses of poor performance on data traffic. It is evident that these CAC schemes\r\ncan reduce the probability of the handoff dropping and the cell overload and limit the probability of the new call blocking.
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