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Efficient interactive call admission control in power-controlled mobile systems

When a mobile newly arrives and seeks admission in power-controlled cellular/personal communications services (PCS) systems, interactive call admission control guides the evolution of the power transmitted by the new mobile in order to protect the transmission quality of ongoing calls from dropping below a desired level. In addition, it eventually decides whether the new mobile should be accepted or rejected without errors. However, existing interactive call admission algorithms incur high network signaling costs and suffer from slow speed in the "accept/reject" decision, which often renders the implementation of these algorithms impractical. This paper presents efficient interactive algorithms that improve the admission speed as well as curtail the network coordination cost. The algorithms are numerically evaluated with respect to the admission speed, decision error, and performance of protecting ongoing call quality. The simulation result shows that the proposed algorithms are promising for practical implementation.