本文提出一种用于解决IPhone系统语音质量问题的端到端的服务质量控制方案 .该QoS控制系统依据端到端的准入控制结果 ,为时间敏感的语音数据流建立 /维护流状态并保留网络资源 ,在数据传输阶段使用虚拟时间片公平轮转算法保证流的统计特性 .本文首先描述了QoS控制系统的组成结构 ,然后给出网络资源分配的准入控制算法和流量控制算法 ,最后依据实验数据讨论该系统对语音质量的控制效果 . This paper proposes an end-to-end quality of service control solution for IPhone system voice quality issues.The QoS control system establishes / maintains flow state and preserves network resources for time-sensitive voice data flows based on end-to-end admission control results , And uses the virtual time slice fairness round-robin algorithm to ensure the statistical properties of the flow in the data transmission phase.This paper first describes the composition of QoS control system, and then gives the admission control algorithm and flow control algorithm of network resource allocation. Finally, based on the experimental data The system controls the quality of the voice.