VoWLAN中的接纳控制策略研究  

Admission control in VoWLAN

作　　者：万泉[1] 

机构地区：[1]深圳信息职业技术学院软件工程系,广东深圳518029

出　　处：《深圳信息职业技术学院学报》2006年第4期14-18,37,共6页Journal of Shenzhen Institute of Information Technology

摘　　要：本文分析了连接接纳控制策略的相关内容并重点介绍了基于测量的接纳控制算法,提出了新的接纳控制算法来改善VoWLAN的QoS(Quality of Service)性能。该算法对应于不同的业务类型采用不同的时间窗阀值测量机制,根据负载的实时情况动态调整时间窗大小,从而可以改变系统的接纳性能,并提供相应的动态带宽分配机制,有效地保障VoWLAN系统的QoS需求。最后通过仿真实验对该算法进行了验证。VoWLAN （Voice over WLAN） is a method of sending voice information in digital form over a wireless broadband network. Essentially, VoWLAN is VoIP delivered through wireless technology. VoWLAN requires a voice-enabled wireless device, which looks and operates like a cell phone. Callers can also use a software-based phone, known as a softphone, that resides on devices including laptop and desktop computers. The VoWLAN system allows all regular functions and messaging applications available on wired phones to be available on the VoWLAN devices. Complete study and analysis of the admission control algorithms are presented in this paper. Based on that, a new admission control algorithm CAC is proposed on the basis of the Time-window Measurement Mechanism and set two different thresholds for the different stream traffics. windows according to the traffic load. Numerical results It adjusts the admission capability by changing the timeshow that proposed analytical models and the algorithm are availability for improving the QoS performance of VoWLAN.

关 键 词：VOWLAN 连接接纳控制 时间窗 服务质量 

分 类 号：TN925[电子电信—通信与信息系统]