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The bandwidth of cellular mobile systems is remarkably growing with emerging new network technologies. LTE is a key step towards future high speed cellular networks, but large bandwidth on its own does not fulfill the QoS requirements of real-time multimedia connections. It is more important to guarantee the amount of network resources required by real-time VoIP and video connections.In this paper, we introduce a Ring based Call Admission Control (CAC) Scheme which enables the prediction of the future position of the users thus enhancing CAC decisions. We examined the required number of rings for optimal prediction using analytical methods. Furthermore we present a vector based extension of the newly proposed algorithm.