Abstract: The major use of wireless network systems is the ability to offer end user wireless services. In this paper, many call admission control schemes have been proposed. Call admission control schemes play more important role in QOS of wireless cellular networks. They achieve some desired quality of service parameters. The design of call admission control algorithms is challenging with the limited and variable resources, and the mobility of users in such networks. This paper includes a survey of call admission control schemes for cellular networks and the research in this area. The goal is to provide a broad classification of existing call admission control schemes. We describe several admission control schemes
Keywords: Call Admission Control (CAC), Dynamic Channel Allocation (DCA), Handoff, Quality of Service, Radio Resource Management, User Mobility.