摘要
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 .
We propose a QoS (quality of service) control mechanism which is end to end to improve quality of voice in IPhone system.This control system creates/maintains the flow states for time sensitive voice streams to reserve the network resources and guarantees the statistical traffic characteristics through the virtual round robin algorithm during data transmission according to the result of admission control.This paper firstly describes the architecture of QoS control system,secondly gives the admission control algorithm and traffic control algorithm,finally discusses the effect of QoS control according the analysis of the test data.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2000年第9期5-9,共5页
Acta Electronica Sinica
基金
国家自然科学基金!(No.F0 2 0 30 3)
863计划基金!(No .863 30 6 ZD 0 5 0 1 )
973计划基金!(No .G1 9980 30 4 0 6)
关键词
INTERNET
QOS
资源预约协议
IP电话
integrated service (Intserv)
differential service (Diffserv)
QoS
resource ReSerVation Protocol (RSVP)
