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    Network troubleshooting digital assistant system
    11.
    发明授权
    Network troubleshooting digital assistant system 有权

    公开(公告)号：US11343135B2

    公开(公告)日：2022-05-24

    申请号：US16985768

    申请日：2020-08-05

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

    Inventor： Supratim Deb ,  Subhabrata Sen ,  Pramod Jamkhedkar

    IPC: G06F15/173 ,  H04L41/0631 ,  G06F16/248 ,  G06F16/2452 ,  H04L41/16 ,  G06F16/245

    Abstract: A system includes one or more processors and a memory. The processor(s) effectuates operations including receiving a query, wherein the query identifies one or more problems in the network. The processor(s) further effectuates operations including retrieving contextual information and problem information, associated with the one or more problems, from a knowledge base and generating a first recommendation list comprising one or more recommendations, wherein each of the one or more recommendations comprises the contextual information or the problem information and at least one course of action. The processor(s) further effectuates operations including receiving a selection of a recommendation from the first recommendation list and updating the knowledge base to include information associated with the selection of the recommendation and generating, in response to a further query, a second recommendation list comprising one or more further recommendations that include further contextual information or further problem information retrieved from the knowledge base.

    METHOD AND APPARATUS FOR DECRYPTION OF ENCRYPTED SSL DATA FROM PACKET TRACES
    12.
    发明申请
    METHOD AND APPARATUS FOR DECRYPTION OF ENCRYPTED SSL DATA FROM PACKET TRACES 有权

    公开(公告)号：US20220109695A1

    公开(公告)日：2022-04-07

    申请号：US17553435

    申请日：2021-12-16

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

    Inventor： Feng Qian ,  Oliver Spatscheck ,  Subhabrata Sen

    IPC: H04L9/40

    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.

    Method and apparatus for closing a transmission control protocol connection for a wireless communications network
    13.
    发明授权
    Method and apparatus for closing a transmission control protocol connection for a wireless communications network 有权

    公开(公告)号：US10805981B2

    公开(公告)日：2020-10-13

    申请号：US16278624

    申请日：2019-02-18

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

    Inventor： Feng Qian ,  Subhabrata Sen ,  Oliver Spatscheck

    IPC: G06F15/16 ,  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.

    Method and system for scalable video streaming
    15.
    发明授权
    Method and system for scalable video streaming 审中-公开

    公开(公告)号：US10674166B2

    公开(公告)日：2020-06-02

    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: H04L29/06 ,  G06F15/16 ,  H04L29/08 ,  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.

    ADAPTIVE BITRATE VIDEO TESTING
    16.
    发明申请
    ADAPTIVE BITRATE VIDEO TESTING 审中-公开

    公开(公告)号：US20200169736A1

    公开(公告)日：2020-05-28

    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: H04N19/154 ,  H04N19/115 ,  H04N19/172

    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.

    METHOD AND APPARATUS FOR SELECTIVE SEGMENT REPLACEMENT IN HAS VIDEO STREAMING ADAPTATION
    17.
    发明申请
    METHOD AND APPARATUS FOR SELECTIVE SEGMENT REPLACEMENT IN HAS VIDEO STREAMING ADAPTATION 审中-公开

    公开(公告)号：US20190312797A1

    公开(公告)日：2019-10-10

    申请号：US15949735

    申请日：2018-04-10

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

    Inventor： Subhabrata Sen ,  Zhuoqing Morley Mao ,  Shichang Xu

    IPC: H04L12/26 ,  H04W24/08 ,  H04L29/06

    Abstract: Aspects of the subject disclosure may include, for example, upon receiving a request for media content, a first signal quality may be determined, a first quality level may be selected based on the first signal quality, and segments of the first quality level may be retrieved, stored in a buffer, and played from the buffer. When the buffer is sufficiently occupied first inferior segments stored in the buffer may be replaced by determining a second signal quality selecting a second quality level based on the second signal quality, identifying the first inferior segment based on the second quality level, and replacing the first inferior segment with a first replacement segment, the first replacement segment corresponding to the first inferior segment. These processes may be performed iteratively. Other embodiments are disclosed.

    CONTROLLING TRAFFIC TRANSMISSIONS TO MANAGE CELLULAR RADIO RESOURCE UTILIZATION
    19.
    发明申请
    CONTROLLING TRAFFIC TRANSMISSIONS TO MANAGE CELLULAR RADIO RESOURCE UTILIZATION 审中-公开

    公开(公告)号：US20170238322A1

    公开(公告)日：2017-08-17

    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

    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.

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