QoS Guaranteed Call Admission Control Strategy for CDMA Networks
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摘要: 基于CDMA(code division multiple access)系统接纳控制(call adm ission control,CAC)机制没有完全考虑各种多媒体业务的现状,研究了CDMA系统中剩余容量的计算方法,采用更加符合目前无线多媒体网络中业务实际情况的业务模型,给出了一种针对多媒体业务的基于QoS(quality of service)保证的动态CAC算法.分析与仿真结果表明,该算法在保证各种业务QoS要求的情况下,可以显著改善CDMA系统的呼叫等待延时和中断率等性能,提高系统资源的利用率.Abstract: To fully meet the requirements of multimedia for CAC(call admission control) mechanisms in CDMA(code division multiple access) systems,a method of calculating the residual capacity was investigated,and a QoS(quality of service) guaranteed dynamic CAC scheme was proposed.The analytical and simulated results show that the proposed CAC scheme may guarantee the QoS of different traffics,and improve the performances of call latency,outage probability and resource utility significantly.
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