公开(公告)号：US10917667B1

公开(公告)日：2021-02-09

申请号：US16560636

申请日：2019-09-04

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

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

IPC: H04N21/234 ,  H04N21/2662 ,  H04N21/231 ,  H04N21/643

Abstract: Devices, computer-readable media, and methods for selecting a video chunk from among a plurality of video chunks associated with a first time block of a video in accordance with a designated perceptual visual quality are disclosed. For instance, a processing system including at least one processor may obtain a selection of a designated perceptual visual quality for a video, select a video chunk from among a plurality of video chunks associated with a first time block of the video, based upon a manifest file of the video, where the video chunk is selected in accordance with the designated perceptual visual quality, and where each of the plurality of video chunks is associated with a respective perceptual visual quality. The processing system may further obtain the video chunk from a server and record the video chunk in a buffer.

公开(公告)号：US10764116B2

公开(公告)日：2020-09-01

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: 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：US10728180B2

公开(公告)日：2020-07-28

申请号：US16107550

申请日：2018-08-21

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

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：US10602203B2

公开(公告)日：2020-03-24

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 ,  H04N21/2343 ,  H04N21/238 ,  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：US20200068209A1

公开(公告)日：2020-02-27

申请号：US16109333

申请日：2018-08-22

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

Inventor： Shuai Hao ,  Subhabrata Sen ,  Anis Elgabli ,  Feng Qian ,  Vaneet Aggarwal

IPC: H04N19/30

Abstract: Aspects of the subject disclosure may include, for example, receiving a request for media content, the media content being divided into a plurality of chunks, obtaining information about the chunks and constraints, determining whether there is a remaining layer to be downloaded, in response to determining that there is a remaining layer to be downloaded, determining a list of chunks that can be downloaded at a current layer and a downloading schedule according to the list of chunks that can be downloaded at the current layer, in response to determining that there is no remaining layer to be downloaded, producing a composite schedule for downloading the media content, and downloading the media content according to the composite schedule. Other embodiments are disclosed.

公开(公告)号：US20190356695A1

公开(公告)日：2019-11-21

申请号：US16530529

申请日：2019-08-02

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

Inventor： Feng Qian ,  Oliver Spatscheck ,  Subhabrata Sen

IPC: H04L29/06

Abstract: An example first device disclosed herein is to obtain, from a library of the first device, a pre-master secret value and a master secret value associated with a session key for a communication session between the first device and a second device, the library instrumented to log the pre-master and master secret values during handshaking, the session key based on the pre-master secret value, the master secret value and data strings exchanged during the handshaking. The disclosed example first device is also to capture a packet level trace corresponding to the communication session, the packet level trace including the data strings and encrypted data. The disclosed example first device is further to determine the session key based on the pre-master secret value, the master secret value and the data strings without use of a proxy, and decrypt the encrypted data with the session key to obtain decrypted data.

公开(公告)号：US10362080B2

公开(公告)日：2019-07-23

申请号：US15496233

申请日：2017-04-25

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

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

IPC: H04L29/06 ,  H04L12/26 ,  H04N21/44 ,  H04N21/2343 ,  H04N21/442 ,  H04N21/845 ,  H04L29/08

Abstract: Aspects of the subject disclosure may include, for example, embodiments include obtaining a first estimated bandwidth capacity of a communication network and selecting a target buffer level to temporarily store media content. Further embodiments include requesting a first portion of the media content according to the first estimated bandwidth capacity and the target buffer level and receiving the first portion of the media content. Additional embodiments include determining a current buffer level and receiving a second estimated bandwidth capacity of the communication network. Also, embodiments include requesting a second portion of the media content according to the current buffer level and the second estimated bandwidth capacity. Other embodiments are disclosed.

公开(公告)号：US10064195B2

公开(公告)日：2018-08-28

申请号：US15585142

申请日：2017-05-02

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

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

IPC: H04W72/04 ,  H04W4/06 ,  H04W4/18

CPC classification number: H04W72/0493 ,  H04L65/4069 ,  H04W4/06 ,  H04W4/18

Abstract: 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.

公开(公告)号：US09699737B2

公开(公告)日：2017-07-04

申请号：US14801793

申请日：2015-07-16

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

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

IPC: G06F15/173 ,  H04W52/02 ,  H04W8/20 ,  H04L29/08 ,  H04L29/06 ,  H04W4/12

CPC classification number: H04W72/1252 ,  H04L65/80 ,  H04L67/1095 ,  H04L67/26 ,  H04W4/12 ,  H04W8/20 ,  H04W24/08 ,  H04W52/0238 ,  H04W52/0251 ,  Y02D30/40 ,  Y02D70/00 ,  Y02D70/1224 ,  Y02D70/1226 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146

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：US09565716B2

公开(公告)日：2017-02-07

申请号：US14095770

申请日：2013-12-03

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

Inventor： Feng Qian ,  Subhabrata Sen ,  Oliver Spatscheck

IPC: G06F15/16 ,  H04W76/06

CPC classification number: H04W76/068 ,  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.

Abstract translation: 公开了一种在无线网络中关闭传输控制协议连接的方法，计算机可读存储设备和装置。 例如，该方法发送请求对传输控制协议连接使用无声传输控制协议闭包的第一传输控制协议选项，接收来自接收方设备的确认，该静音传输控制协议关闭将被用于传输控制 协议连接，发送指示发送方设备的连接超时时段的第二传输控制协议选项，接收接收方设备的连接超时时间，跟踪发送方设备的连接超时时间和接收方设备的连接超时时间， 并且当发送方设备的连接超时时间段或接收方设备的连接超时时间之一过期时，关闭传输控制协议连接。