公开(公告)号：US11632410B2

公开(公告)日：2023-04-18

申请号：US17231156

申请日：2021-04-15

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

Inventor： Bo Han ,  Sassan Pejhan ,  Vijay Gopalakrishnan

IPC: H04L65/75 ,  H04L65/61 ,  H04L65/70 ,  H04L67/10

Abstract: Aspects of the subject disclosure may include, for example, obtaining live video content from equipment of a media content provider, determining priority content within the live video content; segmenting the live video content into a plurality of tiles according to the priority content, and transcoding the live video content according to a type of client device. Further embodiments include determining an encoding schedule for the plurality of tiles according to the priority content, encoding the plurality of tiles according to the encoding schedule, and providing the plurality of tiles to the client device. Other embodiments are disclosed.

公开(公告)号：US11575894B2

公开(公告)日：2023-02-07

申请号：US17810636

申请日：2022-07-04

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

Inventor： Bo Han ,  Tan Xu ,  Zhengye Liu

IPC: H04N19/597 ,  H04N19/167 ,  H04N19/119 ,  H04N19/20 ,  G06N20/00 ,  H04N19/176 ,  G06N5/04 ,  H04N19/162

Abstract: In one example, a processing system including at least one processor may obtain a predicted viewport of a mobile computing device for an immersive visual stream, identify a first plurality of blocks of a frame of the immersive visual stream that are associated with the predicted viewport, encode the first plurality of blocks at a first encoding quality level, and encode a second plurality of blocks of the frame at a second encoding quality level, where the second encoding quality level is associated with a lesser visual quality as compared to the first encoding quality level and where the second plurality of blocks are outside of the predicted viewport. The processing system may then transmit the frame having the first plurality of blocks encoded at the first encoding quality level and the second plurality of blocks encoded at the second encoding quality level to the mobile computing device.

公开(公告)号：US11533220B2

公开(公告)日：2022-12-20

申请号：US17101280

申请日：2020-11-23

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

Inventor： Bo Han ,  Vijay Gopalakrishnan ,  Marco Platania ,  Zhi-Li Zhang ,  Yang Zhang

IPC: H04L41/0668 ,  H04L67/1087 ,  H04L49/35 ,  H04L67/1042 ,  H04L45/64 ,  H04L67/1097 ,  H04L67/104

Abstract: The concepts and technologies disclosed herein are directed to a network-assisted Raft consensus protocol, referred to herein as “NetRaft.” According to one aspect of the concepts and technologies disclosed herein, a system can include a plurality of servers operating in a server cluster, and a plurality of P4 switches corresponding to the plurality of servers. Each server of the plurality of servers can include a back-end that executes a complete Raft algorithm to perform leader election, log replication, and log commitment of a Raft consensus algorithm. Each P4 switch of the plurality of P4 switches can include a front-end that executes a partial Raft algorithm to perform the log replication and the log commitment of the Raft consensus algorithm. The back-end can maintain a complete state for responding to requests that cannot be fulfilled by the front-end. The requests can include read requests and/or write requests.

公开(公告)号：US20220245825A1

公开(公告)日：2022-08-04

申请号：US17725582

申请日：2022-04-21

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

Inventor： Bo Han ,  Cheuk Yiu Ip ,  Eric Zavesky ,  Huanle Zhang

IPC: G06T7/11 ,  G06K9/62 ,  G06T1/60 ,  G06N3/08 ,  G06T3/40

Abstract: Aspects of the subject disclosure may include, for example, a device that has a processing system including a processor; and a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations, including downsampling a full point cloud to obtain a downsampled point cloud, wherein the downsampling reduces a data size of the full point cloud; and using a machine-learning model to assign labels for segmentation and object identification to points in the downsampled point cloud, wherein the machine-learning model is trained on the full point cloud. Other embodiments are disclosed.

公开(公告)号：US20220239896A1

公开(公告)日：2022-07-28

申请号：US17718370

申请日：2022-04-12

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

Inventor： Tan Xu ,  Bo Han ,  Eric Zavesky

IPC: H04N13/395 ,  H04N13/117 ,  G06F3/04815 ,  H04N21/6587 ,  H04N21/81

Abstract: Aspects of the subject disclosure may include, for example, transmitting viewpoint information associated with a first portion of a three-dimensional (3D)/volumetric video to a device, wherein the viewpoint information comprises a first coordinate in 3D space associated with a first viewing direction in a playback of the first portion and a first timestamp associated with the first portion, receiving, from the device, a multiplane image (MPI) representation of a second portion of the 3D video responsive to the transmitting of the viewpoint information, and providing an image of the MPI representation to a display device. Other embodiments are disclosed.

公开(公告)号：US11330252B2

公开(公告)日：2022-05-10

申请号：US16788405

申请日：2020-02-12

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

Inventor： Tan Xu ,  Bo Han ,  Eric Zavesky

IPC: H04N13/395 ,  H04N13/117 ,  G06F3/04815 ,  H04N21/6587 ,  H04N21/81

Abstract: Aspects of the subject disclosure may include, for example, transmitting viewpoint information associated with a first portion of a three-dimensional (3D)/volumetric video to a device, wherein the viewpoint information comprises a first coordinate in 3D space associated with a first viewing direction in a playback of the first portion and a first timestamp associated with the first portion, receiving, from the device, a multiplane image (MPI) representation of a second portion of the 3D video responsive to the transmitting of the viewpoint information, and providing an image of the MPI representation to a display device. Other embodiments are disclosed.

公开(公告)号：US20220060769A1

公开(公告)日：2022-02-24

申请号：US17513202

申请日：2021-10-28

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

Inventor： Bo Han ,  Cheuk Yiu Ip ,  Jackson Jarrell Pair ,  Feng Qian

IPC: H04N21/24 ,  H04N21/2343 ,  H04N21/239 ,  H04N21/478 ,  H04N21/2187 ,  H04N21/81 ,  H04N21/2385 ,  H04N21/472

Abstract: Aspects of the subject disclosure may include, for example, embodiments for obtaining video content from a video content server, determining a quality parameter for each of the plurality of adjusted video content, and adjusting the video content to generate the plurality of adjusted video content. Each of the plurality of adjusted video content comprises a different point cloud density according to the quality parameter. Further embodiments can include receiving a request for the video content from a video content application on a communication device, and determining a distance from a viewpoint to a point-cloud object on the video content application of the communication device. Additional embodiments can include selecting an adjusted video content based on the distance from the viewpoint to the point-cloud object and the quality parameter of the adjusted video content, and providing the adjusted video content to the communication device for presentation. Other embodiments are disclosed.

公开(公告)号：US20220060711A1

公开(公告)日：2022-02-24

申请号：US17515765

申请日：2021-11-01

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

Inventor： Bo Han ,  Cheuk Yiu Ip ,  Jackson Jarrell Pair

IPC: H04N19/132 ,  H04N19/184 ,  H04N19/30 ,  H04N19/146

Abstract: Aspects of the subject disclosure may include, for example, a device that has a processing system including a processor; and a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations including selecting a downsampling technique for removing points from a point cloud in a volumetric video; selecting a data reduction percentage for a target bitrate for streaming the volumetric video; downsampling the point cloud in each frame of the volumetric video for the target bitrate using the downsampling technique and data reduction percentage selected, thereby creating a downsampled volumetric video; and compressing and encoding the downsampled volumetric video, thereby creating an encoded volumetric video. Other embodiments are disclosed.

公开(公告)号：US11206706B2

公开(公告)日：2021-12-21

申请号：US16558283

申请日：2019-09-02

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

Inventor： Bo Han ,  Rittwik Jana ,  Lusheng Ji ,  Feng Qian

IPC: H04W76/15 ,  H04L12/707 ,  H04L12/26 ,  H04L12/803 ,  H04L12/801 ,  H04L12/891 ,  H04W28/08 ,  H04W76/16

Abstract: In one example, a method and apparatus for web browsing on multihomed mobile devices having multiple communication interfaces are disclosed. In one example, the method establishes a primary multiple path transmission control protocol subflow for the transfer of a resource from a server to a user endpoint device. The method then determines a threshold of resource size. When the size of the resource is determined to exceed the threshold, the method establishes a secondary multipath transmission control protocol connection that cooperates with the primary multiple path transmission control protocol subflow for the transfer of the resource from the server to the user endpoint device.

公开(公告)号：US11200704B2

公开(公告)日：2021-12-14

申请号：US17188752

申请日：2021-03-01

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

Inventor： Bo Han ,  Cheuk Yiu Ip ,  Jackson Jarrell Pair

IPC: G06T9/40 ,  H04L12/26 ,  G06T17/00 ,  H04N13/161 ,  H04L29/08

Abstract: Aspects of the subject disclosure may include, for example, encoding a point cloud in a first frame of volumetric video in an octree format and identifying a first group of points of the point cloud, resulting in a first base layer including a base layer, a first enhancement layer and a second enhancement layer. Each layer includes different points from the point cloud, with the second enhancement layer including all points in each octet of leaf nodes in the octree format of the point cloud that are not in the base layer and the first enhancement layer. The first base layer of the point cloud is provided over a communication network to a media device and the first enhancement layer is also provided responsive to a determination of sufficient available bandwidth in the communication network. Other embodiments are disclosed.