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为满足不同业务对服务质量的不同要求,提出了一种适用于无线流媒体业务的呼叫接纳控制算法。算法的思想是通过移动站和基站的协作和反馈控制,以剩余带宽和业务类型为依据进行接纳概率设计;通过互相协作的反馈控制,移动站可以获取系统的剩余可用带宽等级,依此调整业务的呼叫请求速率;仿真结果表明,该算法的输出变化较平滑、稳定,在呼叫阻塞概率、切换呼叫丢弃概率和带宽利用率方面有良好的综合性能。
In order to meet the different requirements of different services to service quality, a call admission control algorithm suitable for wireless streaming media service is proposed. The idea of the algorithm is to design the admission probability based on the remaining bandwidth and the service type through the collaboration and feedback control of the mobile station and the base station. Through feedback control coordinated with each other, the mobile station can obtain the remaining available bandwidth level of the system and adjust the service accordingly The simulation results show that the output of the algorithm is smooth and stable, and has good comprehensive performance in call blocking probability, handover call drop probability and bandwidth utilization rate.