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    HTTP STREAMING CLIENT ADAPTATION ALGORITHM BASED ON PROPORTIONAL-INTEGRAL CONTROL
    15.
    发明申请
    HTTP STREAMING CLIENT ADAPTATION ALGORITHM BASED ON PROPORTIONAL-INTEGRAL CONTROL 审中-公开
    基于比例整合控制的HTTP流客户端适配算法

    公开(公告)号：US20170013041A1

    公开(公告)日：2017-01-12

    申请号：US15275714

    申请日：2016-09-26

    申请人： Cisco Technology, Inc.

    发明人： Xiaoqing Zhu ,  Zhi Li ,  Rong Pan ,  Joshua B. Gahm ,  Hao Hu

    IPC分类号： H04L29/06 ,  H04L12/825 ,  H04L12/835 ,  H04L29/08

    CPC分类号： H04L65/601 ,  H04L47/25 ,  H04L47/30 ,  H04L47/38 ,  H04L65/60 ,  H04L65/608 ,  H04L67/02

    摘要： In one embodiment, an HTTP streaming session may be initiated at a client device in a network. The client device may have a buffer and may be configured to request and receive one or more data segments over HTTP from an HTTP server. A first data segment at a first data source rate may be requested and subsequently received. The first data segment may be stored in the buffer. A second data source rate may then be calculated based on a storage level in the buffer, and a second data segment at the second data source rate may be requested.

    摘要翻译： 在一个实施例中，可以在网络中的客户端设备处发起HTTP流传输会话。 客户端设备可以具有缓冲器，并且可以被配置为通过HTTP从HTTP服务器请求和接收一个或多个数据段。 可以请求并随后接收第一数据源速率的第一数据段。 第一数据段可以存储在缓冲器中。 然后可以基于缓冲器中的存储级别来计算第二数据源速率，并且可以请求具有第二数据源速率的第二数据段。

    Quality optimization with buffer and horizon constraints in adaptive streaming
    16.
    发明授权
    Quality optimization with buffer and horizon constraints in adaptive streaming 有权
    自适应流中具有缓冲区和水平约束的质量优化

    公开(公告)号：US09386308B2

    公开(公告)日：2016-07-05

    申请号：US13943445

    申请日：2013-07-16

    申请人： Cisco Technology, Inc.

    发明人： Zhi Li ,  Ali C. Begen ,  Joshua B. Gahm ,  Bruce P. Osler ,  David R. Oran

    IPC分类号： H04N7/12 ,  H04N19/189 ,  H04N19/152 ,  H04L29/06

    CPC分类号： H04N19/189 ,  H04L65/4084 ,  H04L65/80 ,  H04N19/152

    摘要： Techniques are provided for optimizing quality in adaptive streaming, where information is obtained relating to encoding bitrates and content quality scores for content segments of a content stream. The content segments of the content stream are provided by a content server and downloaded by a computing device. For each content segment, an encoding bitrate is determined for downloading the content segment from the content server, where determining the encoding bitrate for a current content segment is based upon an estimated current network bandwidth, constraints of a buffer into which downloaded content segments are stored, and also upon quality scores associated with content segments within a selected horizon extending from the current content segment to a future content segment in the content stream at an endpoint of the horizon. Each content segment with the determined bitrate for the content segment is downloaded from the content server.

    摘要翻译： 提供了用于优化自适应流中的质量的技术，其中获得与内容流的内容段的编码比特率和内容质量得分有关的信息。 内容流的内容片段由内容服务器提供并由计算设备下载。 对于每个内容段，确定用于从内容服务器下载内容片段的编码比特率，其中确定当前内容片段的编码比特率是基于估计的当前网络带宽，存储下载的内容片段的缓冲器的约束 以及与在当前视域内的内容片段中的内容片段相关联的质量分数，其从当前内容片段延伸到视频端点处的内容流中的未来内容片段。 从内容服务器下载具有内容片段的确定的比特率的每个内容片段。

    NETWORK-BASED ADAPTIVE RATE LIMITING
    17.
    发明申请
    NETWORK-BASED ADAPTIVE RATE LIMITING 有权
    基于网络的自适应速率限制

    公开(公告)号：US20150074285A1

    公开(公告)日：2015-03-12

    申请号：US14024210

    申请日：2013-09-11

    申请人： CISCO TECHNOLOGY, INC.

    发明人： Joshua B. Gahm ,  Aimin Ding ,  Rong Pan ,  Zhi Li

    IPC分类号： H04L29/06

    CPC分类号： H04L65/601 ,  H04L47/11

    摘要： An apparatus can include a session rate limit calculator and a rate limiter. The session rate limit calculator can be configured to compute a session rate limit for a given session of a plurality of active streaming media sessions based on state information for the given session and state information for a downstream bottleneck link to which the apparatus feeds the plurality of active streaming media sessions. The rate limiter can be configured to control downstream traffic for the given session based on the computed session rate limit and to provide corresponding rate-limited downstream traffic for the given session.

    摘要翻译： 装置可以包括会话速率限制计算器和速率限制器。 会话速率限制计算器可以被配置为基于给定会话的状态信息来计算多个活动流媒体会话的给定会话的会话速率限制，以及用于下一个瓶颈链路的状态信息，该设备将多个 主动流媒体会话。 速率限制器可以被配置为基于计算的会话速率限制来控制给定会话的下行流量，并且为给定会话提供对应的速率受限的下行流量。

    Enhancing performance of rapid channel changes and other playback positioning changes in adaptive streaming
    18.
    发明授权
    Enhancing performance of rapid channel changes and other playback positioning changes in adaptive streaming 有权
    提高快速频道更改和自适应流媒体播放定位更改的性能

    公开(公告)号：US08953452B2

    公开(公告)日：2015-02-10

    申请号：US13895822

    申请日：2013-05-16

    申请人： Cisco Technology, Inc.

    发明人： Joshua B. Gahm ,  Eric Cunningham ,  Ali C. Begen ,  David R. Oran

    IPC分类号： H04L1/00 ,  H04L12/917 ,  H04L12/865 ,  G06F15/16

    CPC分类号： H04L47/32 ,  H04L41/5025 ,  H04L47/263 ,  H04L47/30 ,  H04L47/38 ,  H04L47/6275 ,  H04L47/76 ,  H04L65/4084 ,  H04L65/80 ,  H04N21/47217

    摘要： Content is received within a network by a content receiver based upon fetch requests by the content receiver to a content source, where the fetch requests for content are based upon a first adaptation logic scheme to fill a buffer of the content receiver at a selected rate and to download segments of content at selected encoding rates. A network priority is detected at the content receiver that includes an observed download rate at the content receiver that is greater than a fair share rate for other content receivers in the network. Fetch requests for content are revised in response to detection of the network priority, where the revised fetch requests are based upon a priority adaptation scheme that results in at least one of filling the buffer at a faster rate and downloading segments of content at higher encoding rates compared with the first adaptation logic scheme.

    摘要翻译： 基于内容接收器对内容源的提取请求，在内容中接收内容，其中内容的提取请求基于第一自适应逻辑方案，以选定的速率填充内容接收器的缓冲器，以及 以选定的编码速率下载内容片段。 在内容接收器处检测到网络优先级，其包括在内容接收器处观察到的下载速率大于网络中其他内容接收器的公平共享速率。 针对内容的提取请求被修改以响应于网络优先级的检测，其中修改的提取请求基于优先级适配方案，其导致以更快的速率填充缓冲器中的至少一个并且以更高的编码率下载内容段 与第一个适应逻辑方案相比。

    Quality Optimization with Buffer and Horizon Constraints in Adaptive Streaming
    19.
    发明申请
    Quality Optimization with Buffer and Horizon Constraints in Adaptive Streaming 有权
    自适应流中缓冲区和地平线约束的质量优化

    公开(公告)号：US20150023404A1

    公开(公告)日：2015-01-22

    申请号：US13943445

    申请日：2013-07-16

    申请人： Cisco Technology, Inc.

    发明人： Zhi Li ,  Ali C. Begen ,  Joshua B. Gahm ,  Bruce P. Osler ,  David R. Oran

    IPC分类号： H04N19/189 ,  H04N19/152

    CPC分类号： H04N19/189 ,  H04L65/4084 ,  H04L65/80 ,  H04N19/152

    摘要： Techniques are provided for optimizing quality in adaptive streaming, where information is obtained relating to encoding bitrates and content quality scores for content segments of a content stream. The content segments of the content stream are provided by a content server and downloaded by a computing device. For each content segment, an encoding bitrate is determined for downloading the content segment from the content server, where determining the encoding bitrate for a current content segment is based upon an estimated current network bandwidth, constraints of a buffer into which downloaded content segments are stored, and also upon quality scores associated with content segments within a selected horizon extending from the current content segment to a future content segment in the content stream at an endpoint of the horizon. Each content segment with the determined bitrate for the content segment is downloaded from the content server.

    摘要翻译： 提供了用于优化自适应流中的质量的技术，其中获得与内容流的内容段的编码比特率和内容质量得分有关的信息。 内容流的内容片段由内容服务器提供并由计算设备下载。 对于每个内容段，确定用于从内容服务器下载内容片段的编码比特率，其中确定当前内容片段的编码比特率是基于估计的当前网络带宽，存储下载的内容片段的缓冲器的约束 以及与在当前视域内的内容片段中的内容片段相关联的质量分数，其从当前内容片段延伸到视频端点处的内容流中的未来内容片段。 从内容服务器下载具有内容片段的确定的比特率的每个内容片段。