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分层传输
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  layered transmission
    This paper proposes a new rate control mechanism for layered multicast on the base of video layered coding and layered transmission protocol by combining the network_based and the receivers control mechanisms .
    本文在视频分层编码及分层传输协议的基础上,将基于网络控制与接收端控制机制相结合,提出一种新的分层多点播送速率控制机制。
短句来源
    2) Data classification is designed for analysis of applications and data, helping to invoke appropriate algorithms, while 3) Layered transmission provides independent channels for scalable streams.
    (2)数据分类,通过对应用类型与数据的分析来调用合适的组播算法. (3)分层传输为可伸缩性码流提供各自独立的组播信道.
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  “分层传输”译为未确定词的双语例句
    RESEARCH ON AGENT-CONTROLLED LAYERED-TRANSMISSION ALGORITHM IN MULTICAST VIDEO DISTRIBUTION
    视频多点播送中的代理控制分层传输算法研究
短句来源
    This thesis also deals with TCP friendliness issues in the traditional video layered multicast and proxy caching of video streams framework. New TCP friendly layered multicast and dynamic proxy caching mechanisms are proposed.
    本文还在讨论视频分层传输理论和代理缓冲理论的基础上,对流媒体多点分层传输和代理缓冲播放中存在的TCP友好性问题进行研究,提出新的TCP友好的多点分层传输和动态缓冲调度机制。
短句来源
    The available bandwidth of a network is one of significant metrics in both performance evaluation of computer network and QoS verification in traffic engineering. It can be widely used in many applications related to the change of network conditions,such as vedio layer transmission,bandwidth distribution in differenciate services,server selection and congestion control.
    网络路径的有效带宽是计算机网络性能评价与流量工程中QoS验证中重要的度量参数 ,可广泛应用于根据网络条件进行视频分层传输、区分服务中的带宽分配、服务器选址和拥塞控制中 .
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  layered transmission
As can be seen in Figure 2a, the network bandwidth utilization is the highest when around 20 30 layers are being used for the layered transmission.
      
For layered transmission we have slightly modified the coding methods and the bitstream structure which are described in the following sections.
      
Layered transmission of data is often recommended as a solution to the problem of varying bandwidth constraints in multicast applications.
      
Overall, this approach of layered transmission for transporting FEC and differing quality of media has been shown to have the best performance.
      


This paper discusses the model of agent controlled layered transmission in multicast video distribution. On pointing out the problems of line oscillation and fairness existing in this model, we propose an improved algorithm concentrating on the add layer and drop layer of the receivers. The examples indicate that the improved algorithm has better performance.

本文讨论视频多点分层传输代理控制模型 ,在指出该模型存在的链路振荡和公平性问题的基础上 ,着重就接收方增加和丢弃数据层的算法进行讨论 ,并提出了改进算法 ,实例表明新的改进算法具有较好的性能 .

The available bandwidth of a network is one of significant metrics in both performance evaluation of computer network and QoS verification in traffic engineering.It can be widely used in many applications related to the change of network conditions,such as vedio layer transmission,bandwidth distribution in differenciate services,server selection and congestion control.However,available bandwidth is not only related to link bandwidth,but also changes dynamically with the cross traffic in the path.This makes it...

The available bandwidth of a network is one of significant metrics in both performance evaluation of computer network and QoS verification in traffic engineering.It can be widely used in many applications related to the change of network conditions,such as vedio layer transmission,bandwidth distribution in differenciate services,server selection and congestion control.However,available bandwidth is not only related to link bandwidth,but also changes dynamically with the cross traffic in the path.This makes it difficult to measure end-to-end available bandwidth efficiently.This paper proposes an approach to estimate available bandwidth in the view of traffic model to perform delay analysis and gives the bound of the estimation value of available bandwidth.And the problems and solutions in the measurement implementation are also analysized.

网络路径的有效带宽是计算机网络性能评价与流量工程中QoS验证中重要的度量参数 ,可广泛应用于根据网络条件进行视频分层传输、区分服务中的带宽分配、服务器选址和拥塞控制中 .但由于有效带宽不仅与路径的链路带宽有关 ,而且随背景流量改变而动态变化 ,这使得端到端有效带宽的测量相当困难 .从Cruz流量模型出发 ,提出有效带宽的估计可以通过对流量进行延时分析实现 ,给出了有效带宽估计的边界 ,并分析了实际测量中可能遇到的问题和解决办法 .

This paper proposes a new rate control mechanism for layered multicast on the base of video layered coding and layered transmission protocol by combining the network_based and the receivers control mechanisms . The congestion is detected by both receivers and routers and the popularity of the session is weighted by routers so as to add or drop layers with fairness. The experiment results show that the mechanism can respond to congestion quickly and, making use of the most of bandwidth, provide better service...

This paper proposes a new rate control mechanism for layered multicast on the base of video layered coding and layered transmission protocol by combining the network_based and the receivers control mechanisms . The congestion is detected by both receivers and routers and the popularity of the session is weighted by routers so as to add or drop layers with fairness. The experiment results show that the mechanism can respond to congestion quickly and, making use of the most of bandwidth, provide better service quality for high popular sessions.

本文在视频分层编码及分层传输协议的基础上,将基于网络控制与接收端控制机制相结合,提出一种新的分层多点播送速率控制机制。文中给出了该机制的拥塞检测、流行度权衡和数据层增加和丢弃算法。实验结果表明,该速率控制机制能够对拥塞做出快速响应,并在较好利用带宽的基础上保证高流行度的会话流具有较好的服务质量。

 
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