WiFi接口的IAD内部带宽控制策略  

Introduction to Bandwidth Control Mechanism in WiFi-VoIP IAD

作　　者：沈魏建[1] 赵金兰[2] 

机构地区：[1]清华大学自动化系,北京100084 [2]桂林电子科技大学通信与信息工程系,广西桂林541004

出　　处：《计算机技术与发展》2008年第12期11-14,共4页Computer Technology and Development

摘　　要：近年来在一些国家新出现了运营商测试大区域内部署无线局域网的情况,而在较大范围内部署WIFI网络上提供语音和数据,使用IAD(综合接入设备)能够给运营带来极大的便利。IAD其内部存在着语音和数据流量的带宽竞争关系,其控制策略在不同应用模式下尤其在加入WiFi接口后有所不同,用以保证语音质量不受到突发数据或者带宽波动较大等情况影响。介绍了带WiFi接口的综合接入设备在Wifi网络中的应用,和在产品研发过程中为解决IAD内部的语音和数据流量竞争和分流控制所采取的一系列策略,在测试环境中实施这些控制策后无论带宽竞争是在通话过程中还是先有数据流量的情况下都能实现给语音流量合理分配带宽。In recent years a new trend was shown as the emergence of tesing WLAN in a large area and to deploy IAD（integrated acess device） can bring significant convenience to carry when trying to provide both voice and data services in this WLAN. Describes internal bandwidth control mechanism in a VoWiFi （Voice Over WiFi） IAD. IAD is designed as one of most competitive access terminals to be deployed in large scale WiFi network. Bandwidth control policies solving the bandwidth competition problems of data and voice are critical for IAD to work in WiFi environment where bandwidth may vary in a large range. And by implementing these policies in an embedded Linux based access device both voice and data traffics can occupy possible and resonable bandwidth when competition occurs.

关 键 词：因特网语音通信 综合接入设备 带宽竞争 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]