公开(公告)号：US20140156863A1

公开(公告)日：2014-06-05

申请号：US13745799

申请日：2013-01-19

Applicant: QUALCOMM Incorporated

Inventor： Qiang GAO ,  Michael George LUBY ,  Yinian MAO ,  Lorenz Christoph MINDER

IPC: H04L29/06

CPC classification number: H04L65/60 ,  H04L43/0888 ,  H04L43/0894 ,  H04L47/10 ,  H04L47/263 ,  H04L47/30 ,  H04L65/4084 ,  H04L65/608 ,  H04L65/80 ,  H04N21/2401 ,  H04N21/2402 ,  H04N21/44209 ,  H04N21/6373 ,  H04W28/22

Abstract: A client device presents streaming media and includes a stream manager for controlling streams, a request accelerator for making network requests for content, a source component coupled to the stream manager and the request accelerator for determining which requests to make, a network connection, and a media player. A process for rate estimation is provided that will react quickly to reception rate changes. The rate estimator can use an adaptive windowed average and take into account the video buffer level and the change in video buffer level in a way so to guarantee that the rate adjusts fast enough if there is a need, while keeping the windowing width large (and thus the measurement variance) large. A guarantee might be that when a rate drop or rise happens, the estimator adjusts its estimate within a time proportional to a buffer drain rate or buffer fill level.

Abstract translation: 客户端设备呈现流媒体，包括用于控制流的流管理器，用于对内容进行网络请求的请求加速器，耦合到流管理器的源组件和用于确定要进行哪些请求的请求加速器，网络连接和 媒体播放器。 提供了速率估计过程，其将对接收速率变化做出快速反应。 速率估计器可以使用自适应窗口平均值，并且考虑视频缓冲器电平和视频缓冲器电平的变化，以便保证速率在有需要时调节得足够快，同时保持窗口宽度的大（和 因此测量方差）大。 保证可能是当速率下降或上升发生时，估计器在与缓冲器排出速率或缓冲器填充水平成比例的时间内调整其估计。

公开(公告)号：US20130227080A1

公开(公告)日：2013-08-29

申请号：US13745809

申请日：2013-01-20

Applicant: QUALCOMM Incorporated

Inventor： Qiang GAO ,  Michael George LUBY ,  Yinian MAO ,  Lorenz Christoph MINDER ,  Kevin Roland FALL

IPC: H04L29/06

CPC classification number: H04L65/60 ,  H04L43/16 ,  H04L47/10 ,  H04L47/266 ,  H04L47/29 ,  H04L47/30 ,  H04L65/1083 ,  H04L65/4084 ,  H04L65/4092 ,  H04L65/604 ,  H04L65/608 ,  H04L65/80 ,  H04N5/783 ,  H04N21/23439 ,  H04N21/239 ,  H04N21/2401 ,  H04N21/2402 ,  H04N21/44004 ,  H04N21/442 ,  H04N21/6373 ,  H04N21/64769 ,  H04N21/8456

Abstract: A client device presents streaming media and includes a stream manager, a request accelerator, and a source component coupled to the stream manager and the request accelerator for determining which requests to make. A rate selection process can make rate decisions so that the buffer is filled when it is low, avoiding erratically changing rates and can choose the correct steady rate quickly. Multimedia download strategies can be used for HTTP that allow for accurate rate estimations, achieving link capacity even if network delays and packet loss rates are high, achieving timely delivery of the stream, and achieving relatively steady download rates with little short term variability. A receiver might use multiple HTTP connections, decompose media requests into smaller chunk requests, synchronize the connections using TCP flow control mechanisms, and request data in bursts. In addition, the receiver might use an HTTP pipelining process to keep the connections busy.

Abstract translation: 客户端设备呈现流媒体，并且包括流管理器，请求加速器和耦合到流管理器的源组件和用于确定要进行哪些请求的请求加速器。 速率选择过程可以进行速率决定，以便缓冲器在低时被填充，避免不断变化的速率，并可以快速选择正确的稳定速率。 多媒体下载策略可用于允许精确率估计的HTTP，即使网络延迟和丢包率较高，实现链路容量，实现流的及时传递，并实现相对稳定的下载速率，几乎没有短期变化。 接收机可能会使用多个HTTP连接，将媒体请求分解成较小的块请求，使用TCP流控制机制同步连接，并以突发方式请求数据。 此外，接收器可能会使用HTTP流水线过程来保持连接繁忙。

公开(公告)号：US20130227122A1

公开(公告)日：2013-08-29

申请号：US13745811

申请日：2013-01-20

Applicant: QUALCOMM Incorporated

Inventor： Qiang GAO ,  Michael George LUBY ,  Yinian MAO ,  Lorenz Christoph MINDER

IPC: H04L29/06

CPC classification number: H04L65/60 ,  H04L43/16 ,  H04L47/10 ,  H04L47/266 ,  H04L47/29 ,  H04L47/30 ,  H04L65/1083 ,  H04L65/4084 ,  H04L65/4092 ,  H04L65/604 ,  H04L65/608 ,  H04L65/80 ,  H04N5/783 ,  H04N21/23439 ,  H04N21/239 ,  H04N21/2401 ,  H04N21/2402 ,  H04N21/44004 ,  H04N21/442 ,  H04N21/6373 ,  H04N21/64769 ,  H04N21/8456

Abstract: A client/receiver downloads data over a network path between a source and the receiver coupled by the network path and stores the media data in a presentation buffer of the receiver and from there it is consumed by a presentation element. The receiver monitors a presentation buffer fill level that represents what portion of the presentation buffer contains media data not yet consumed by a presentation element. The receiver makes requests for additional data to download. If the fill level is above a high fill threshold, the receiver does not make further requests and eventually the fill level goes down. If the fill level is below a low fill threshold, the receiver restarts the downloading and updates the fill level as media data is consumed by the presentation element. The fill level might be measured in units of memory storage capacity and/or units of presentation time.

Abstract translation: 客户端/接收者通过由网络路径耦合的源和接收器之间的网络路径下载数据，并将媒体数据存储在接收机的呈现缓冲器中，并从那里被表示元素消耗。 接收器监视呈现缓冲器填充级别，其表示呈现缓冲器的哪部分包含尚未被表示元素消耗的媒体数据。 接收方要求下载其他数据。 如果填充水平高于高填充阈值，则接收器不会进一步请求，最终填充水平下降。 如果填充水平低于低填充阈值，则当介质数据被表示元素消耗时，接收器重新启动下载并更新填充水平。 填充级别可以以存储器容量和/或呈现时间单位为单位来测量。