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    ADAPTIVE BITRATE VIDEO TESTING
    21.
    发明申请
    ADAPTIVE BITRATE VIDEO TESTING 审中-公开

    公开(公告)号：US20200169736A1

    公开(公告)日：2020-05-28

    申请号：US16202724

    申请日：2018-11-28

    申请人： AT&T Intellectual Property I, L.P.

    发明人： Eric Petajan ,  Subhabrata Sen ,  Emir Halepovic ,  Shichang Xu

    IPC分类号： H04N19/154 ,  H04N19/115 ,  H04N19/172

    摘要： A processing system may obtain a first frame of a first variant associated with a reference copy of a video, where a plurality of variants comprises copies of the video encoded at different bitrates, determine a frame number of the first frame from a visual overlay containing the first frame number, calculate a first image distance between the first frame and a frame of the reference copy having the frame number, determine, from among a plurality of image distances for frames of each variant having the frame number, a closest image distance to the first image distance, the plurality of image distances comprising image distances between frames of the variants and the frame of the reference copy having the frame number, and identify the first frame as being from the first variant in accordance with a variant associated with the first closest image distance.

    METHOD AND APPARATUS FOR SELECTIVE SEGMENT REPLACEMENT IN HAS VIDEO STREAMING ADAPTATION
    22.
    发明申请
    METHOD AND APPARATUS FOR SELECTIVE SEGMENT REPLACEMENT IN HAS VIDEO STREAMING ADAPTATION 审中-公开

    公开(公告)号：US20190312797A1

    公开(公告)日：2019-10-10

    申请号：US15949735

    申请日：2018-04-10

    申请人： AT&T Intellectual Property I, L.P.

    发明人： Subhabrata Sen ,  Zhuoqing Morley Mao ,  Shichang Xu

    IPC分类号： H04L12/26 ,  H04W24/08 ,  H04L29/06

    摘要： Aspects of the subject disclosure may include, for example, upon receiving a request for media content, a first signal quality may be determined, a first quality level may be selected based on the first signal quality, and segments of the first quality level may be retrieved, stored in a buffer, and played from the buffer. When the buffer is sufficiently occupied first inferior segments stored in the buffer may be replaced by determining a second signal quality selecting a second quality level based on the second signal quality, identifying the first inferior segment based on the second quality level, and replacing the first inferior segment with a first replacement segment, the first replacement segment corresponding to the first inferior segment. These processes may be performed iteratively. Other embodiments are disclosed.

    CONTROLLING TRAFFIC TRANSMISSIONS TO MANAGE CELLULAR RADIO RESOURCE UTILIZATION
    24.
    发明申请
    CONTROLLING TRAFFIC TRANSMISSIONS TO MANAGE CELLULAR RADIO RESOURCE UTILIZATION 审中-公开

    公开(公告)号：US20170238322A1

    公开(公告)日：2017-08-17

    申请号：US15585142

    申请日：2017-05-02

    申请人： AT&T Intellectual Property I, L.P.

    发明人： Subhabrata Sen ,  Oliver Spatscheck ,  Alexandre Gerber ,  Zhuoqing Morley Mao ,  Feng Qian ,  Zhaoguang Wang

    IPC分类号： H04W72/04

    CPC分类号： H04W72/0493 ,  H04L65/4069 ,  H04W4/06 ,  H04W4/18

    摘要： Techniques control traffic transmissions to manage radio resource utilization. When content is being streamed to user equipment (UE) and is at least initially intended to be streamed in real time at a constant bitrate, a communication management component can determine whether the content being transmitted to the UE can be delayed, instead of being transmitted in real time. In response to determining that the content can be delayed, the communication management component can facilitate buffering data and periodically streaming the data to the UE in data bursts to reduce use of UE power and radio resources. When transmitting a visual image to a UE, the communication management component can adjust resolution of a visual image to correspond to screen dimensions of the UE based on information indicating screen dimensions of the UE that can be received from the UE.

    Method and Apparatus for Decryption of Encrypted SSL Data from Packet Traces
    27.
    发明申请
    Method and Apparatus for Decryption of Encrypted SSL Data from Packet Traces 审中-公开
    从数据包跟踪中解密加密SSL数据的方法和装置

    公开(公告)号：US20160142440A1

    公开(公告)日：2016-05-19

    申请号：US14547792

    申请日：2014-11-19

    申请人： AT&T Intellectual Property I, L.P.

    发明人： Feng Qian ,  Oliver Spatscheck ,  Subhabrata Sen

    IPC分类号： H04L29/06

    CPC分类号： H04L63/166 ,  H04L29/06897 ,  H04L29/06965 ,  H04L63/0272 ,  H04L63/0281 ,  H04L63/0471 ,  H04L63/1408 ,  H04L63/1425 ,  H04L63/168 ,  H04L63/306

    摘要： A system for decrypts encrypted Secure Sockets Layer (SSL) data from packet traces without using private keys or a proxy. Decryption of encrypted SSL data is accomplished by intercepting a session key associated with a communication session transmitted from a user device to a server during handshaking between the user device and the server. The session key is then used to decrypt packet level traces of the communication session. The decrypted packet level traces are then used to measure traffic.

    摘要翻译： 用于从数据包跟踪中解密加密的安全套接字层（SSL）数据而不使用私钥或代理的系统。 加密SSL数据的解密是通过在用户设备和服务器之间的握手期间拦截与从用户设备传送到服务器的通信会话相关联的会话密钥而实现的。 会话密钥然后用于解密通信会话的分组级跟踪。 然后，解密的分组级别跟踪用于测量流量。

    OPTIMIZATION OF BITRATE ADAPTATION AND PREFETCHING FOR SHORT-FORM VIDEO
    28.
    发明公开
    OPTIMIZATION OF BITRATE ADAPTATION AND PREFETCHING FOR SHORT-FORM VIDEO 审中-公开

    公开(公告)号：US20240348868A1

    公开(公告)日：2024-10-17

    申请号：US18300373

    申请日：2023-04-13

    申请人： AT&T Intellectual Property I, L.P.

    发明人： Theodore Karagioules ,  Emir Halepovic ,  Subhabrata Sen ,  Vijay Gopalakrishnan

    IPC分类号： H04N21/44 ,  H04N21/262 ,  H04N21/647

    CPC分类号： H04N21/44004 ,  H04N21/26258 ,  H04N21/64738

    摘要： A method includes acquiring a playlist identifying a plurality of video files to be played back during a video streaming session on an endpoint device, obtaining, from an operator of a communications network over which the video files are to be downloaded, a maximum throughput for the video streaming session, selecting a subsequent video file that is scheduled in the playlist for playback after a playback of a currently playing video file, wherein the subsequent video file includes a plurality of chunks, selecting, based on the maximum throughput and for each of the chunks, a variant, such that a plurality of variants is selected in which each variant corresponds to one chunk of the plurality of chunks, wherein the variants are selected to maximize a utility function that is constrained by the maximum throughput, and downloading the plurality of variants to a local buffer of the endpoint device.