公开(公告)号：US20250132997A1

公开(公告)日：2025-04-24

申请号：US19007364

申请日：2024-12-31

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

Inventor： Zhengye Liu ,  Yali Liu ,  Vanessa Tan

IPC: H04L43/067 ,  H04L43/0817 ,  H04L43/50

Abstract: Estimation of network latency based on aggregated performance data is disclosed. End-to-end latency between endpoints can comprise protocol-induced latency, access network-induced, core-network latency, and network-distance-based latency. Network latency, e.g., network-distance-based latency, also referred to as topological latency, can correspond to communication path length between endpoints. Crowdsourcing of communication path performance information can enable estimation of topological latency, and derivatives thereof, such as topological distance. Crowdsourcing can be the practice of obtaining information or input into a task or project by enlisting the services of a large number of people, either paid or unpaid, e.g., collection of performance information. The disclosure illustrates estimation of protocol-induced latency, access network-induced, and core-network latency, such that they can be compensated for in end-to-end latency information, thereby enabling estimation of topological latency that can be employed in determining, initiating, etc., a network response operation that can affect change in a network.

公开(公告)号：US20230412479A1

公开(公告)日：2023-12-21

申请号：US17807668

申请日：2022-06-17

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

Inventor： Zhengye Liu ,  Yali Liu ,  Jin Wang ,  Raghvendra Savoor

IPC: H04L43/08

CPC classification number: H04L43/08

Abstract: In one example, the present disclosure describes a device, computer-readable medium, and method for locally managing quality of experience in a home network. For instance, in one example, a method performed by a residential gateway connected to a home network includes capturing network data relating to a plurality of software applications executing on a plurality of user endpoint devices connected to the home network, converting the network data into at least one network condition metric, receiving a query from a first software application of the plurality of software applications for at least one current condition of the home network, and delivering the at least one network condition metric to the first software application.

公开(公告)号：US20220007204A1

公开(公告)日：2022-01-06

申请号：US17480736

申请日：2021-09-21

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

Inventor： Zhengye Liu ,  Donglin Hu ,  Yali Liu ,  Jin Wang

IPC: H04W16/22 ,  H04W28/02 ,  H04W36/00 ,  H04W24/02 ,  H04B17/391 ,  H04L12/801 ,  H04L12/24 ,  H04B17/382

Abstract: Aspects of the subject disclosure may include, for example, receiving a first plurality of operating parameters associated with a first plurality of communication devices, obtaining a first prediction of a performance of a first communication device included in the first plurality of communication devices that is based on an application of the first plurality of operating parameters to a model, and responsive to a determination that the first prediction of the performance is inadequate in accordance with a first threshold, transmitting a first command to at least one communication device included in the first plurality of communication devices to modify at least one operating parameter of the at least one communication device. Other embodiments are disclosed.

公开(公告)号：US20210368216A1

公开(公告)日：2021-11-25

申请号：US17392302

申请日：2021-08-03

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

Inventor： Rajarajan Sivaraj ,  Zhengye Liu ,  Jin Wang ,  Yali Liu

IPC: H04N21/238 ,  H04N21/24 ,  H04N21/44 ,  H04L12/801

Abstract: Aspects of the subject disclosure may include, for example, a method including monitoring a video session to determine key performance indicators for cross-layer interactions between a network providing video session video data and user equipment receiving the video session video data, wherein the key performance indicators include a transmission control protocol congestion window size that corresponds to a video chunk requested by the user equipment, and a radio access network throughput of a download of the video chunk requested by the user equipment, and determining a quality of service for the user equipment during the video session according to a residual length of content in a playback buffer for the user equipment based on the transmission control protocol congestion window size, and the radio access network throughput. Other embodiments are disclosed.

公开(公告)号：US11122311B2

公开(公告)日：2021-09-14

申请号：US16535949

申请日：2019-08-08

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

Inventor： Yali Liu ,  Zhengye Liu ,  Donglin Hu ,  Jin Wang

IPC: H04N21/25 ,  H04N21/238 ,  H04N21/258 ,  H04N21/24

Abstract: Aspects of the subject disclosure may include, for example, a method, including identifying recommended video clips for a user of a communication device according to a video viewing profile for the user and video subject matter information associated with a plurality of video clips, identifying an edge cloud server for facilitating network access by the communication device at a location, determining a reduced activity period for a data path between a video content server and the edge cloud server by comparing activity information for the data path and an activity threshold, directing the video content server to store the recommended video clips at the edge cloud server during the reduced activity period, and providing a listing of the recommended video clips to an application, where the communication device receives a video clip of the recommended video clips from the edge cloud server responsive to a selection of the video clip via the application. Other embodiments are disclosed.

公开(公告)号：US10972526B2

公开(公告)日：2021-04-06

申请号：US16538708

申请日：2019-08-12

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

Inventor： Yongdong Zhao ,  Zhengye Liu ,  Yali Liu ,  Zuxian Guo

IPC: G06F15/16 ,  H04L29/06 ,  H04L29/08 ,  H04N21/2343 ,  H04N21/238 ,  H04N21/845

Abstract: In one example, the encoding rate at which data is delivered over a network is estimated by intercepting a data packet from a data streaming session, wherein the data packet contains at least a portion of one of a plurality of file segments containing portions of a file, and wherein a number of the plurality of file segments that is delivered via the data streaming session is limited to a maximum number. The mean size of the plurality of file segments is estimated from data contained in the data packet. A plurality of potential sizes of the plurality of file segments is calculated, wherein each potential size corresponds to one number between one and the maximum number. An encoding rate of the data streaming session is calculated, based at least in part on which potential size of the plurality of potential sizes is closest to the mean size.

公开(公告)号：US10484308B2

公开(公告)日：2019-11-19

申请号：US15475717

申请日：2017-03-31

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

Inventor： Zhengye Liu ,  Jin Wang ,  Yali Liu ,  Xidong Wu

IPC: H04L12/861 ,  H04L12/801 ,  H04L29/06 ,  H04N21/24 ,  H04N21/443 ,  H04N21/61 ,  H04N21/643 ,  H04N21/845 ,  H04L12/911 ,  H04W84/04 ,  H04L29/08

Abstract: Aspects of the subject disclosure may include, for example, a system that provides for obtaining network parameter data from an eNodeB and a content delivery network server of a wireless network, determining a predicted network condition for a group of end user devices to receive an over-the-top video service in a coverage area of the eNodeB according to the network parameter data, and providing access to prediction information representative of the predicted network condition. The providing the access to the prediction information representative of the predicted network condition enables a video client of an end user device in the coverage area to provide a request for a video chunk to a video server according to buffer information and the predicted network condition. Other embodiments are disclosed.

公开(公告)号：US20190297356A1

公开(公告)日：2019-09-26

申请号：US15934077

申请日：2018-03-23

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

Inventor： Rajarajan Sivaraj ,  Zhengye Liu ,  Jin Wang ,  Yali Liu

IPC: H04N21/238 ,  H04N21/24 ,  H04N21/44 ,  H04L12/801

Abstract: Aspects of the subject disclosure may include, for example, a method including monitoring a video session to determine key performance indicators for cross-layer interactions between a network providing video session video data and user equipment receiving the video session video data, wherein the key performance indicators include a requested quality for a video chunk requested by the user equipment, a transmission control protocol congestion window size that corresponds to the video chunk requested by the user equipment, and an instantaneous radio access network throughput while downloading the video chunk requested by the user equipment, and determining a quality of service for the user equipment during the video session according to a residual length of content in a playback buffer for the user equipment based on the requested quality for the video chunk, the transmission control protocol congestion window size, and the instantaneous radio access network throughput. Other embodiments are disclosed.

公开(公告)号：US11533524B2

公开(公告)日：2022-12-20

申请号：US17392302

申请日：2021-08-03

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

Inventor： Rajarajan Sivaraj ,  Zhengye Liu ,  Jin Wang ,  Yali Liu

IPC: H04N21/238 ,  H04N21/24 ,  H04N21/44 ,  H04L47/193 ,  H04L65/80

Abstract: Aspects of the subject disclosure may include, for example, a method including monitoring a video session to determine key performance indicators for cross-layer interactions between a network providing video session video data and user equipment receiving the video session video data, wherein the key performance indicators include a transmission control protocol congestion window size that corresponds to a video chunk requested by the user equipment, and a radio access network throughput of a download of the video chunk requested by the user equipment, and determining a quality of service for the user equipment during the video session according to a residual length of content in a playback buffer for the user equipment based on the transmission control protocol congestion window size, and the radio access network throughput. Other embodiments are disclosed.

公开(公告)号：US11429891B2

公开(公告)日：2022-08-30

申请号：US15914057

申请日：2018-03-07

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

Inventor： Yali Liu ,  Jin Wang ,  Zhengye Liu ,  Bruce Schine

IPC: G06N20/00 ,  H04N21/4408 ,  H04N21/44 ,  H04L9/40

Abstract: Aspects of the subject disclosure may include, for example, a processing system that performs operations including collecting encrypted network traffic flow data from user interaction with an application, deriving a first set of traffic feature vectors from the encrypted network traffic flow data collected, training a machine learning algorithm on the first set of traffic feature vectors to classify each traffic feature vector in the first set of traffic feature vectors as associated with a type of the application or not associated with the type of the application, and classifying whether an encrypted network traffic flow as the type of the application by applying the machine learning algorithm to a traffic feature vector of the encrypted network traffic flow. Other embodiments are disclosed.