检索结果-南通市图书馆

On the QoS Assessment of Video Sessions in Heterogeneous 3G-WLAN Networks with Seamless and Secure Mobility Support

China Communications 2007年第1期4卷 105-119页

作者： Ilias Politis Michail Tsagkaropoulos Stavros Kotsopoulos Tasos Dagiuklas Peter Stavroulakis Dept.of Electrical and Computer Engineering University of Patras26500 Greece Dept.of Telecommunications and Network Systems Technical Institute of MessolonghiNafpaktosGreece Technical University of Crete Roumeliotaki 17 str.73100 LentarianaChaniaCreteGreece

Real-time video data transmission is currently emerging as a popular application among mobile users but it is very sensitive to QoS degradation due to packet losses in wireless *** order to achieve service continuity and integrity upon handoffs among heterogeneous networks,provisioning of seamless and secure mobility is ***,in order to reduce the delay and packet losses during vertical handovers we need to employ supportive protocols like context *** this paper we evaluate the QoS of video transmission over a heterogeneous 3G-WLAN *** aggregate video data traffic is represented by a dynamic two-dimensional Markov chain model,which has been evaluated against real video data *** the vertical handover, appropriate aaa handshaking and enhanced mobility management using context transfer have been *** QoS evaluation of video streams was performed based on peak signal-noise ratio(PSNR) measurements,while we analyticallyestimated the number of packet losses during *** results show that both packet loss within the converged network and loss occurrence affecting the perceived video quality is reduced. Moreover,the proposed context transfer scheme minimizes handover delay and the number of lost packet up to 3 times compared to standard aaa handshaking.

关键词： heterogeneous wireless networks multiplexed video traffic radius-aaa,context transfer

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：