中文摘要：

一个调用承认控制计划在切换包的直角的频率部门 multiplexing (OFDM ) 为即时服务被建议无线细胞的网络。建议计划的主要想法是使用最大的接受比率为即时服务维持最大的隧道利用根据需要包级、电话级的 quality-of-service (QoS ) 要求。接受比率被根据变化交通负担使用一倍分离的 Markov 链和维纳预言理论周期性地调整。广泛的模拟结果证明这个算法维持高隧道利用，甚至当它为即时服务保证包级、电话级的 QoS 得到要求。

英文摘要：

A call admission control scheme is proposed for real-time services in packet-switched orthogonal frequency division multiplexing （OFDM） wireless cellular networks. The main idea of the proposed scheme is to use maximum acceptance ratio to maintain maximum channel utilization for real-time services according to the desired packet-level and call- level quality-of-service （QoS） requirements. The acceptance ratio is periodically adjusted by using a time discrete Markov chain and Wiener prediction theory according to the varying traffic load. Extensive simulation results show that this algorithm maintains high channel utilization, even as it guarantees packet-level and call-level QoS requirements for real-time services.