公开(公告)号：US20220232275A1

公开(公告)日：2022-07-21

申请号：US17657949

申请日：2022-04-04

Applicant: AT&T Intellectual Property I, L.P. ,  AT&T Mobility II LLC

Inventor： Subhabrata Sen ,  Eric Petajan ,  Shichang Xu

IPC: H04N21/2662 ,  H04N21/24 ,  H04N21/2343 ,  H04N21/232 ,  H04N21/236 ,  H04N19/10 ,  H04N19/154

Abstract: A processing system may obtain a downscaled version of a reference copy of a video, comprising a plurality of downscaled versions of a plurality of frames of the reference copy of the video, obtain a first recorded frame of a first variant of a plurality of variants associated with the reference copy of the video, where the plurality of variants comprises a plurality of copies of the video encoded at different bitrates, generate a first downscaled version of the first recorded frame, calculate a first plurality of image distances between the first downscaled version of the first recorded frame and the plurality of downscaled versions of the plurality of frames of the reference copy of the video, and determine a first frame index of the first recorded frame in accordance with a first least image distance from among the first plurality of image distances that is calculated.

公开(公告)号：US11277649B2

公开(公告)日：2022-03-15

申请号：US16560721

申请日：2019-09-04

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Subhabrata Sen ,  Shuai Hao ,  Yanyuan Qin ,  Bing Wang ,  Krishna R. Pattipati

IPC: H04N21/234 ,  H04L29/06 ,  H04N21/231 ,  H04N21/236 ,  H04N21/24 ,  H04N21/2662 ,  H04N21/643 ,  H04N21/258 ,  H04N21/845 ,  H04N21/262 ,  H04L65/60 ,  H04L65/65

Abstract: A processing system including at least one processor may obtain a selection of a desired perceptual quality for a video and selects a first video chunk from among a first plurality of video chunks, wherein the first plurality of video chunks is associated with a first time block of the video, wherein the selecting is based upon a manifest file of the video, wherein each video chunk of the first plurality of video chunks is associated with a respective perceptual quality and a respective encoding bitrate, wherein the first video chunk is part of a subset of the first plurality of video chunks for which the respective perceptual quality matches the desired perceptual quality within a predefined threshold tolerance, and wherein the respective encoding bitrate of the first video chunk is lower than a highest encoding bitrate associated with the subset of the first plurality of video chunks. The processing system may obtain the first video chunk from a server and store the first video chunk in a buffer.

公开(公告)号：US10735742B2

公开(公告)日：2020-08-04

申请号：US16202724

申请日：2018-11-28

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Eric Petajan ,  Subhabrata Sen ,  Emir Halepovic ,  Shichang Xu

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

Abstract: 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.

公开(公告)号：US20200067852A1

公开(公告)日：2020-02-27

申请号：US16107550

申请日：2018-08-21

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Subhabrata Sen ,  Shuai Hao ,  Yanyuan Qin ,  Bing Wang ,  Krishna R. Pattipati

IPC: H04L12/861 ,  H04L29/06

Abstract: Aspects of the subject disclosure may include, for example, communicating with a source of streaming media, wherein the streaming media is variable bitrate encoded, wherein the streaming media comprises a first plurality of chunks, wherein each of the first plurality of chunks corresponds to a first portion of the streaming media, wherein the streaming media comprises a second plurality of chunks, wherein each of the second plurality of chunks corresponds to a second portion of the streaming media, wherein the streaming media comprises a third plurality of chunks, and wherein each of the third plurality of chunks corresponds to a third portion of the streaming media; obtaining, from the source, a first one of the first plurality of chunks; and determining which of the second plurality of chunks and third plurality of chunks to obtain. Other embodiments are disclosed.

公开(公告)号：US20190319831A1

公开(公告)日：2019-10-17

申请号：US16454989

申请日：2019-06-27

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Supratim Deb ,  Subhabrata Sen ,  Pramod Jamkhedkar

IPC: H04L12/24 ,  G06F16/248 ,  G06F16/245 ,  G06F16/2452

Abstract: A system for troubleshooting a network, the system comprising a virtual machine including a virtual central processor in communication with at least one memory, virtual machine including a knowledge base configured to store contextual information related to the network; a knowledge base manager in communication with the knowledge base, the knowledge base manager configured to collect at least one of contextual information and problem information from at least one data source on the network and populate the knowledge base; a problem monitor in communication with the knowledge base and the knowledge base manager, the problem monitor configured to receive the problem information from the knowledge base manager; a query evaluation engine in communication with the knowledge base and the problem monitor; an interface configured to receive a query; and a natural language query translator in communication with the interface and the query evaluation engine; wherein the natural language query translator is configured to provide a natural language query from the interface and transmit the query in a machine readable format to the query evaluation engine; wherein the query evaluation engine collects at least one of the contextual information in the knowledge base and the problem information in the problem manager relevant to the query and generate a recommendation list.

公开(公告)号：US20190289343A1

公开(公告)日：2019-09-19

申请号：US16429907

申请日：2019-06-03

Applicant: AT&T Mobility II LLC ,  AT&T Intellectual Property I, L.P.

Inventor： Eric D. Petajan ,  Emir Halepovic ,  Subhabrata Sen

IPC: H04N21/236 ,  G11B27/34

Abstract: Concepts and technologies are disclosed herein for adaptive bit rate mobile video objective testing. A system can receive a plurality of screen-capture frames, where each of the plurality of screen-capture frames corresponds to a respective frame of an adaptive bit rate video stream being displayed on a screen of a test device. The system can create a screen-capture video stream and determine that the screen-capture video stream corresponds to a reference video stream that is non-annotated. The system can obtain a reference video signature package, align the screen-capture video stream with the reference video stream using the reference video signature package, generate full reference video quality performance indicators, and determine delivery quality performance indicators for the screen-capture video stream. The system can join the full reference video quality performance indicators and the delivery quality performance indicators to form an objective quality of experience data structure.

公开(公告)号：US10355912B2

公开(公告)日：2019-07-16

申请号：US15480768

申请日：2017-04-06

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Supratim Deb ,  Subhabrata Sen ,  Pramod Jamkhedkar

IPC: G06F15/173 ,  H04L12/24 ,  G06F16/248 ,  G06F16/2452 ,  G06F16/245

Abstract: A system for troubleshooting a network, the system comprising a virtual machine including a virtual central processor in communication with at least one memory, virtual machine including a knowledge base configured to store contextual information related to the network; a knowledge base manager in communication with the knowledge base, the knowledge base manager configured to collect at least one of contextual information and problem information from at least one data source on the network and populate the knowledge base; a problem monitor in communication with the knowledge base and the knowledge base manager, the problem monitor configured to receive the problem information from the knowledge base manager; a query evaluation engine in communication with the knowledge base and the problem monitor; an interface configured to receive a query; and a natural language query translator in communication with the interface and the query evaluation engine; wherein the natural language query translator is configured to provide a natural language query from the interface and transmit the query in a machine readable format to the query evaluation engine; wherein the query evaluation engine collects at least one of the contextual information in the knowledge base and the problem information in the problem manager relevant to the query and generate a recommendation list.

公开(公告)号：US20190182891A1

公开(公告)日：2019-06-13

申请号：US16278624

申请日：2019-02-18

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Feng Qian ,  Subhabrata Sen ,  Oliver Spatscheck

IPC: H04W76/38

CPC classification number: H04W76/38 ,  H04W80/06

Abstract: A method, computer-readable storage device and apparatus for closing a transmission control protocol connection in a wireless network are disclosed. For example, the method sends a first transmission control protocol option requesting a use of a silent transmission control protocol closure for the transmission control protocol connection, receives a confirmation from a recipient device that silent transmission control protocol closure is to be used for the transmission control protocol connection, sends a second transmission control protocol option that indicates a connection timeout period for the sender device, receives a connection timeout period for the recipient device, tracks the connection timeout period for the sender device and the connection timeout period for the recipient device, and closes the transmission control protocol connection when one of the connection timeout period for the sender device or the connection timeout period for the recipient device has expired.

公开(公告)号：US10306665B2

公开(公告)日：2019-05-28

申请号：US15632231

申请日：2017-06-23

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Alexandre Gerber ,  Zhuoqing Mao ,  Feng Qian ,  Subhabrata Sen ,  Oliver Spatscheck ,  Zhaoguang Wang

IPC: H04L12/801 ,  H04L12/24 ,  H04B1/50 ,  H04L29/06 ,  H04W72/12 ,  H04W8/20 ,  H04L29/08 ,  H04W52/02 ,  H04W24/08 ,  H04W4/12

Abstract: To facilitate increasing power and resource efficiency of a mobile device, in the mobile device, with regard to periodic or one-time data transfers, a communication management component can analyze information comprising data transfer parameter information, including jitter information, associated with each application of a subset of applications used by the device and can desirably schedule and/or bundle data transfers associated with the applications to reduce the number of separate data bursts to transfer that data to thereby reduce use of wireless resources and power consumption by the device. A push notification system can receive respective jitter information associated with each application from the mobile device, and the push notification system can desirably schedule and/or bundle push notifications to reduce the number of separate data bursts sent to the device to reduce use of wireless resources and power consumption by the device.

公开(公告)号：US20190020909A1

公开(公告)日：2019-01-17

申请号：US15647588

申请日：2017-07-12

Applicant: AT&T Mobility II LLC ,  AT&T Intellectual Property I, L.P.

Inventor： Eric D. Petajan ,  Emir Halepovic ,  Subhabrata Sen

IPC: H04N21/236 ,  G11B27/34

Abstract: Concepts and technologies are disclosed herein for adaptive bit rate mobile video objective testing. A system can receive a plurality of screen-capture frames, where each of the plurality of screen-capture frames corresponds to a respective frame of an adaptive bit rate video stream being displayed on a screen of a test device. The system can create a screen-capture video stream and determine that the screen-capture video stream corresponds to a reference video stream that is non-annotated. The system can obtain a reference video signature package, align the screen-capture video stream with the reference video stream using the reference video signature package, generate full reference video quality performance indicators, and determine delivery quality performance indicators for the screen-capture video stream. The system can join the full reference video quality performance indicators and the delivery quality performance indicators to form an objective quality of experience data structure.