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。

公开(公告)号：US20160165584A1

公开(公告)日：2016-06-09

申请号：US14560580

申请日：2014-12-04

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

Inventor： Subhabrata Sen ,  Oliver Spatscheck ,  Junxian Huang ,  Zhuoqing Morley Mao ,  Feng Qian

IPC: H04W72/04

CPC classification number: H04W28/18 ,  H04M19/047 ,  H04W28/06

Abstract: A more efficient mobile device can be achieved via an optimization process based on display screen dormancy. Application data transmissions can be throttled based on a screen-on or screen-off status of a mobile device. Furthermore, an application management platform can be used to prioritize application data transmissions based on data associated with each application's packet transmissions.

Abstract translation: 通过基于显示屏休眠的优化过程，可以实现更高效的移动设备。 可以基于移动设备的屏幕上或屏幕截止状态来限制应用数据传输。 此外，应用管理平台可以用于基于与每个应用的分组传输相关联的数据来对应用数据传输进行优先级排序。

公开(公告)号：US20130315088A1

公开(公告)日：2013-11-28

申请号：US13956028

申请日：2013-07-31

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

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

IPC: H04W24/08

CPC classification number: H04W4/001 ,  H04L43/0876 ,  H04W4/50 ,  H04W8/22 ,  H04W24/08 ,  H04W52/0229 ,  H04W52/0232 ,  H04W76/27 ,  Y02D30/40 ,  Y02D70/1224 ,  Y02D70/1226 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164

Abstract: Analyzing mobile device applications within a wireless data network and other related aspects are presented herein. More particularly, described herein is a novel Intelligent Mobility Application Profiling Tool (iMAP) and/or other mechanisms, systems and methods for profiling and benchmarking applications associated with mobile devices in a wireless data network. Various systems and methods described herein expose cross-layer interaction associated with a network device in order to profile an application on the network device with respect to energy efficiency, performance, and functionality. As described herein, radio resource control (RRC) analysis can be performed to infer RRC states associated with a given application, identify tail time, etc. Further, analyzers are employed for various layers, including transmission control protocol (TCP) and/or hypertext transfer protocol (HTTP), as well as to analyze communication bursts associated with a given application. Analysis results are subsequently utilized to deliver application profiling results to a user.

公开(公告)号：US20240414517A1

公开(公告)日：2024-12-12

申请号：US18807156

申请日：2024-08-16

Applicant: AT&T Intellectual Property I, L.P. ,  The Regents of the University of Michigan

Inventor： Subhabrata Sen ,  Oliver Spatscheck ,  Mehrdad Moradi ,  Zhuoqing Morley Mao

IPC: H04W8/02 ,  H04L67/303 ,  H04L67/562

Abstract: Systems and methods provide containers instantiated for each user equipment (UE), or on “per-UE” bases, which consolidate certain network functions for processing UE traffic into an efficient, in-network, and proximate virtualization to reduce latency and increase customizability.

公开(公告)号：US20240348852A1

公开(公告)日：2024-10-17

申请号：US18300369

申请日：2023-04-13

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

Inventor： Theodore Karagioules ,  Emir Halepovic ,  Subhabrata Sen ,  Vijay Gopalakrishnan

IPC: H04N21/262 ,  H04N21/2387 ,  H04N21/2662

CPC classification number: H04N21/26258 ,  H04N21/2387 ,  H04N21/2662

Abstract: A method includes acquiring a playlist identifying video files and an order in which the video files are 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 value of a streaming parameter for the video streaming session, selecting a subsequent video file that is scheduled for playback after a playback of a currently playing video file, wherein the subsequent video file includes a plurality of chunks, selecting, for each chunk, 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 selecting the variant is based on both the maximum value and a measured value for the streaming parameter, and downloading the plurality of variants to a local buffer of the endpoint device.

公开(公告)号：US12096513B2

公开(公告)日：2024-09-17

申请号：US17835576

申请日：2022-06-08

Applicant: AT&T Intellectual Property I, L.P. ,  The Regents of the University of Michigan

Inventor： Subhabrata Sen ,  Oliver Spatscheck ,  Mehrdad Moradi ,  Zhuoqing Morley Mao

IPC: H04W8/02 ,  H04L67/303 ,  H04L67/562

CPC classification number: H04W8/02 ,  H04L67/303 ,  H04L67/562

Abstract: Systems and methods provide containers instantiated for each user equipment (UE), or on “per-UE” bases, which consolidate certain network functions for processing UE traffic into an efficient, in-network, and proximate virtualization to reduce latency and increase customizability.

公开(公告)号：US20230224254A1

公开(公告)日：2023-07-13

申请号：US18187579

申请日：2023-03-21

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

Inventor： Rajarajan Sivaraj ,  Kittipat Apicharttrisorn ,  Bharath Balasubramanian ,  Rittwik Jana ,  Subhabrata Sen ,  Dhruv Gupta ,  Jin Wang

IPC: H04L47/36 ,  H04W28/06

CPC classification number: H04L47/365 ,  H04W28/06

Abstract: The technologies described herein are generally directed to modeling radio wave propagation in a fifth generation (5G) network or other next generation networks. For example, a method described herein can include, for a network application, identifying, by a system comprising a processor, a characteristic value of a performance characteristic associated with an uplink connection enabled via a network of a user equipment to application server equipment hosting the network application. The method can further include, based on the characteristic value and a criterion, selecting, by the system, a first packet size for the uplink connection. The method can further include communicating, by the system, to the user equipment, the first packet size for use with the uplink connection.

公开(公告)号：US11323423B2

公开(公告)日：2022-05-03

申请号：US16191116

申请日：2018-11-14

Applicant: AT&T Intellectual Property I, L.P. ,  The Regents of the University of Michigan

Inventor： Subhabrata Sen ,  Shichang Xu ,  Zhuoqing Morley Mao

IPC: H04L29/06 ,  H04L12/26 ,  H04L12/24 ,  H04L12/733 ,  H04L43/04 ,  H04L41/12 ,  H04L45/122 ,  H04L65/80

Abstract: Aspects of the subject disclosure may include, for example, a method in which a processing system parses a network trace to collect packet information for an encrypted adaptive bite rate (ABR) video stream encoded into a plurality of tracks; detects request packets corresponding to a sequence of requests for video segments to be downloaded at a network client; and determines a traffic volume downloaded at the network client to obtain a sequence of traffic volumes. The processing system identifies, for each of the sequence of traffic volumes, a set of candidate segments each having a size meeting a size-matching criterion; selects a segment from the set of candidate segments to determine a segment sequence meeting an index-matching criterion; and infers characteristics of the sequence of traffic volumes based on the segment sequence. Other embodiments are disclosed.

公开(公告)号：US11297365B2

公开(公告)日：2022-04-05

申请号：US16713389

申请日：2019-12-13

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

Inventor： Subhabrata Sen ,  Eric Petajan ,  Shichang Xu

IPC: H04N21/24 ,  H04N21/2662 ,  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：US11240269B2

公开(公告)日：2022-02-01

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.