公开(公告)号：US20220021620A1

公开(公告)日：2022-01-20

申请号：US17492351

申请日：2021-10-01

Applicant: AT&T INTELLECTUAL PROPERTY I, L.P. ,  THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS

Inventor： Emir Halepovic ,  Vijay Gopalakrishnan ,  Muhammad Usama Chaudhry ,  Shanyu Zhou ,  Balajee Vamanan ,  Hulya Seferoglu

IPC: H04L12/851 ,  H04L12/26 ,  H04L12/863

Abstract: In various aspects, a system that comprises detecting a congestion event in a network that transmits a first group of data packets and a second group of data packets, wherein the detecting the congestion event comprises detecting the congestion event has initiated in response to a data packet throughput value of the network having been determined to have decreased below a threshold value; in response to the detecting of the congestion event, determine a transmission rate of the second group of data packets based on a transmission priority of the second group of data packets; determining a data packet dropping rate for the second group of data packets based on the transmission rate of the second group of data packets and a size of the first group of data packets and transmitting the second group of data packets utilizing the transmission rate and the data packet dropping rate.

公开(公告)号：US10958586B2

公开(公告)日：2021-03-23

申请号：US16509172

申请日：2019-07-11

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

Inventor： Rittwik Jana ,  Jeffrey Erman ,  Vijay Gopalakrishnan ,  Emir Halepovic ,  Rakesh Sinha ,  Xuan Kelvin Zou

IPC: H04L12/825 ,  H04L29/08 ,  H04L12/911 ,  H04L12/835 ,  H04L29/06 ,  H04W8/02 ,  H04W24/08

Abstract: Aspects of the subject disclosure may include, for example, obtaining predicted available bandwidths for an end user device, monitoring buffer occupancy of a buffer of the end user device, determining bit rates for portions of media content according to the predicted available bandwidths and according to the buffer occupancy, and adjusting bit rates for portions of media content according to the predicted available bandwidths and according to the buffer occupancy during streaming of the media content to the end user device over a wireless network. Other embodiments are disclosed.

公开(公告)号：US10757220B2

公开(公告)日：2020-08-25

申请号：US16216072

申请日：2018-12-11

Applicant: AT&T Intellectual Property I, L.P. ,  Georgia Institute of Technology

Inventor： Emir Halepovic ,  Tarun Mangla ,  Mostafa H. Ammar ,  Ellen Witte Zegura

IPC: G06F15/173 ,  H04L29/08 ,  H04N21/647 ,  H04L29/06 ,  H04N21/24 ,  H04N21/2662 ,  H04N21/2381

Abstract: In one example, a processing system including at least one processor obtains a transport control protocol flow associated with a video session that streams a video from a server to a client. The transport control protocol flow comprises a plurality encrypted packets exchanged between the server and the client. The processing system then reconstructs a hypertext transfer protocol transaction that is part of the streaming video session. The reconstructing is performed without decrypting the plurality of encrypted packets.

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：US20200186430A1

公开(公告)日：2020-06-11

申请号：US16213624

申请日：2018-12-07

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

Inventor： Emir Halepovic ,  Matteo Varvello

IPC: H04L12/24 ,  H04L12/26 ,  H04N21/2385

Abstract: Aspects of the subject disclosure may include, for example, obtaining, from a first source of information, a first bandwidth prediction, wherein the first bandwidth prediction is based upon historical bandwidth data that had been provided by a plurality of devices; obtaining, from a second source of information, a second bandwidth prediction, wherein the second bandwidth prediction is based upon network measurements, and wherein the network measurements are other than the historical bandwidth data that had been provided by the plurality of devices; selecting as a source of a future bandwidth prediction one of the first source of information and the second source of information, wherein the selecting is based upon a comparison of each of the first bandwidth prediction and the second bandwidth prediction to an actually obtained bandwidth of the device. Other embodiments are disclosed.

公开(公告)号：US20200177652A1

公开(公告)日：2020-06-04

申请号：US16207260

申请日：2018-12-03

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

Inventor： Emir Halepovic ,  Ibrahim Ben Mustafa ,  Tamer Nadeem

IPC: H04L29/06 ,  H04L12/853

Abstract: Aspects of the subject disclosure may include, for example, a method comprising sending context information from a mobile wireless device through a control channel to a network server; receiving a policy at the mobile wireless device from the network server, wherein the policy assigns a video streaming bit rate to the mobile wireless device based on the context information; and implementing the policy to control a video streaming session between the mobile wireless device and a media server over a data channel. The context information may include information about the mobile wireless device and/or a user of the mobile wireless device. The policy may be different for each mobile wireless device. Other embodiments are disclosed.

公开(公告)号：US20200128255A1

公开(公告)日：2020-04-23

申请号：US16167251

申请日：2018-10-22

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

Inventor： Emir Halepovic ,  Cyriac James ,  Mea Wang

IPC: H04N19/159 ,  H04N19/154 ,  H04N19/31 ,  H04N19/176

Abstract: Devices, computer-readable media, and methods for recording a video chunk in a designated order comprising a plurality of intra-frame coded frames followed by a plurality of inter-frame coded frames are disclosed. For instance, a processing system including at least one processor may obtain a video chunk associated with a time block of a video. In one example, the video chunk includes a plurality of frames encoded in a bitrate of a plurality of available bitrates for the time block of the video, and the plurality of frames includes a plurality of intra-frame coded frames and a plurality of inter-frame coded frames. In one example, the plurality of frames is in a first order. The processing system may then record the video chunk in a second order comprising the plurality of intra-frame coded frames followed by the plurality of inter-frame coded frames.

公开(公告)号：US10536500B2

公开(公告)日：2020-01-14

申请号：US15629449

申请日：2017-06-21

Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.

Inventor： Emir Halepovic ,  Jeffrey Erman

IPC: G06F15/16 ,  H04L29/06 ,  H04L12/26 ,  G06F16/43 ,  G06F16/903 ,  H04L12/825 ,  H04L12/811

Abstract: A method includes receiving, at a device from a content source, a portion of a particular chunk of media content a particular quality level during adaptive bit rate media streaming of the media content. The method includes receiving, at the device, network data related to network conditions associated with the device in response to receipt of the portion. The method also includes, in response to a determination to download the particular chunk at a first quality level different than the particular quality level, the determination based on the particular quality level and the network data: sending a request from the device for the particular chunk at the first quality level to the content source, and replacing the portion with the particular chunk at the first quality level.

公开(公告)号：US10470189B2

公开(公告)日：2019-11-05

申请号：US15193685

申请日：2016-06-27

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

Inventor： Lien K. Tran ,  Simon D. Byers ,  Carlos Eduardo De Andrade ,  Emir Halepovic ,  David John Poole ,  Christopher T. Volinsky

IPC: H04W72/04 ,  H04L29/08 ,  H04L12/24

Abstract: A more efficient over-the-air software push can be facilitated by leveraging a smart scheduling system for vehicles. The smart scheduling system can use location and network capacity data to prioritize over-the-air software pushes for vehicles. For instance, a vehicle, which is only operational during off-peak wireless network hours can receive a software push during the off-peak times because wireless network capacity is not an issue. However, vehicles, which are used primarily during heavy peak wireless network times can receive software in a prioritized manner based on location data, frequency of use, network capacity, etc.

公开(公告)号：US20190334824A1

公开(公告)日：2019-10-31

申请号：US16509172

申请日：2019-07-11

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

Inventor： Rittwik Jana ,  Jeffrey Erman ,  Vijay Gopalakrishnan ,  Emir Halepovic ,  Rakesh Sinha ,  Xuan Kelvin Zou

IPC: H04L12/825 ,  H04L12/911 ,  H04L12/835 ,  H04L29/08

Abstract: Aspects of the subject disclosure may include, for example, obtaining predicted available bandwidths for an end user device, monitoring buffer occupancy of a buffer of the end user device, determining bit rates for portions of media content according to the predicted available bandwidths and according to the buffer occupancy, and adjusting bit rates for portions of media content according to the predicted available bandwidths and according to the buffer occupancy during streaming of the media content to the end user device over a wireless network. Other embodiments are disclosed.