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    Quality optimization with buffer and horizon constraints in adaptive streaming
    1.
    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

    Applicant: Cisco Technology, Inc.

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

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

    CPC classification number: H04N19/189 ,  H04L65/4084 ,  H04L65/80 ,  H04N19/152

    Abstract: 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.

    Abstract translation: 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。

    Enhancing performance of rapid channel changes and other playback positioning changes in adaptive streaming
    2.
    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

    Applicant: Cisco Technology, Inc.

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

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

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

    Abstract: 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.

    Abstract translation: 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
    3.
    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

    Applicant: Cisco Technology, Inc.

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

    IPC: H04N19/189 ,  H04N19/152

    CPC classification number: H04N19/189 ,  H04L65/4084 ,  H04L65/80 ,  H04N19/152

    Abstract: 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.

    Abstract translation: 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。

    ENHANCING PERFORMANCE OF RAPID CHANNEL CHANGES AND OTHER PLAYBACK POSITIONING CHANGES IN ADAPTIVE STREAMING
    7.
    发明申请
    ENHANCING PERFORMANCE OF RAPID CHANNEL CHANGES AND OTHER PLAYBACK POSITIONING CHANGES IN ADAPTIVE STREAMING 有权
    增强自适应流中快速频道更改和其他播放位置变化的性能

    公开(公告)号：US20140341026A1

    公开(公告)日：2014-11-20

    申请号：US13895822

    申请日：2013-05-16

    Applicant: Cisco Technology, Inc.

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

    IPC: H04L12/917 ,  H04L12/865

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

    Abstract: 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.

    Abstract translation: 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。

    Pipelining get requests in adaptive streaming
    9.
    发明授权
    Pipelining get requests in adaptive streaming 有权

    公开(公告)号：US09935991B2

    公开(公告)日：2018-04-03

    申请号：US14881184

    申请日：2015-10-13

    Applicant: Cisco Technology, Inc.

    Inventor： Bill Ver Steeg ,  Ali C. Begen

    IPC: G06F15/16 ,  H04L29/06 ,  H04L29/08

    CPC classification number: H04L65/60 ,  H04L65/1069 ,  H04L65/4084 ,  H04L65/602 ,  H04L67/02

    Abstract: In one embodiment, a client device includes a processor to send a first GET request to a server for a first data chunk of a data item, a communication interface to receive packets of the first data chunk, a buffer to buffer the packets, wherein the processor is operative to obtain a first measure of round trip time (RTT), the processor is operative to estimate a time t1 when receipt of the last packet of the packets of the first data chunk in the buffer will be completed, the processor is operative to determine a next fetch time, t2, to send a second GET request to the server for a second data chunk of the data item, based on the time t1 adjusted by a portion of the first measure of RTT, the processor is operative to send the second GET request to the server at about time t2.

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