Patents by Inventor Zhehui Zhang
Zhehui Zhang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12096270Abstract: To meet the stringent 5G radio access network (RAN) service requirements, layers one and two need to be processed in essentially real time. Thus, prompt anomaly detection is important to prevent negative impacts on customer experience, which is critical for mobile networks to meet the stringent service requirements. However, monitoring networks for anomalies is difficult due at least to (1) the resource constrained edge deployments in which the vRAN resides, (2) the variety of anomaly types and fault locations making anomalies difficult to detect, and (3) the low frequency of anomalies leading to unbalanced data sets for training, among others. The present application addresses these issues by decoupling anomaly detection at the infrastructure layer (servers, NICs, switches, etc.) from anomaly detection at the VNF layer (L1, high-DU, CU). This enables different techniques for identifying anomalies and for reducing the monitoring overhead that is tailored to each layer.Type: GrantFiled: January 18, 2022Date of Patent: September 17, 2024Assignee: Microsoft Technology Licensing, LLCInventors: Xenofon Foukas, Zhehui Zhang, Bozidar Radunovic
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Patent number: 11659238Abstract: Aspects of the subject disclosure may include, for example, receiving, over a communication network, a plurality of requests for frames of video content to provide to a mobile device. Further embodiments can include determining a first portion of the plurality of requests are for pre-fetch frames of the video content, and providing, over the communication network, the pre-fetch frames to the mobile device over a default bearer path. Additional embodiments can include determining a second portion of the plurality of requests are for emergent frames of the video content, and providing, over the communication network, the emergent frames to the mobile device over a dedicated bearer path. Other embodiments are disclosed.Type: GrantFiled: September 15, 2022Date of Patent: May 23, 2023Assignee: AT&T Intellectual Property I, L.P.Inventors: Zhehui Zhang, Shu Shi, Rittwik Jana, Varun Gupta
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Publication number: 20230136356Abstract: To meet the stringent 5G radio access network (RAN) service requirements, layers one and two need to be processed in essentially real time. Thus, prompt anomaly detection is important to prevent negative impacts on customer experience, which is critical for mobile networks to meet the stringent service requirements. However, monitoring networks for anomalies is difficult due at least to (1) the resource constrained edge deployments in which the vRAN resides, (2) the variety of anomaly types and fault locations making anomalies difficult to detect, and (3) the low frequency of anomalies leading to unbalanced data sets for training, among others. The present application addresses these issues by decoupling anomaly detection at the infrastructure layer (servers, NICs, switches, etc.) from anomaly detection at the VNF layer (L1, high-DU, CU). This enables different techniques for identifying anomalies and for reducing the monitoring overhead that is tailored to each layer.Type: ApplicationFiled: January 18, 2022Publication date: May 4, 2023Applicant: Microsoft Technology Licensing, LLCInventors: Xenofon FOUKAS, Zhehui ZHANG, Bozidar RADUNOVIC
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Publication number: 20230013625Abstract: Aspects of the subject disclosure may include, for example, receiving, over a communication network, a plurality of requests for frames of video content to provide to a mobile device. Further embodiments can include determining a first portion of the plurality of requests are for pre-fetch frames of the video content, and providing, over the communication network, the pre-fetch frames to the mobile device over a default bearer path. Additional embodiments can include determining a second portion of the plurality of requests are for emergent frames of the video content, and providing, over the communication network, the emergent frames to the mobile device over a dedicated bearer path. Other embodiments are disclosed.Type: ApplicationFiled: September 15, 2022Publication date: January 19, 2023Applicant: AT&T Intellectual Property I, L.P.Inventors: Zhehui Zhang, Shu Shi, Rittwik Jana, Varun Gupta
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Patent number: 11490158Abstract: Aspects of the subject disclosure may include, for example, receiving, over a communication network, a plurality of requests for frames of video content to provide to a mobile device. Further embodiments can include determining a first portion of the plurality of requests are for pre-fetch frames of the video content, and providing, over the communication network, the pre-fetch frames to the mobile device over a default bearer path. Additional embodiments can include determining a second portion of the plurality of requests are for emergent frames of the video content, and providing, over the communication network, the emergent frames to the mobile device over a dedicated bearer path. Other embodiments are disclosed.Type: GrantFiled: October 1, 2021Date of Patent: November 1, 2022Assignee: AT&T Intellectual Property I, L.P.Inventors: Zhehui Zhang, Shu Shi, Rittwik Jana, Varun Gupta
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Patent number: 11394814Abstract: One embodiment described herein provides a system and method for path control in a network. During operation, in response to determining that a path-control condition is met, an end host in the network can determine an offset value to be applied to a packet header of a packet, modify the packet header by applying the determined offset value, and forward the packet based on the modified packet header.Type: GrantFiled: May 20, 2020Date of Patent: July 19, 2022Assignee: Alibaba Group Holding LimitedInventors: Zhehui Zhang, Xiangning Yu, Haiyong Wang, Haiyang Zheng, Jiayao Hu, Guohui Wang
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Publication number: 20220021932Abstract: Aspects of the subject disclosure may include, for example, receiving, over a communication network, a plurality of requests for frames of video content to provide to a mobile device. Further embodiments can include determining a first portion of the plurality of requests are for pre-fetch frames of the video content, and providing, over the communication network, the pre-fetch frames to the mobile device over a default bearer path. Additional embodiments can include determining a second portion of the plurality of requests are for emergent frames of the video content, and providing, over the communication network, the emergent frames to the mobile device over a dedicated bearer path. Other embodiments are disclosed.Type: ApplicationFiled: October 1, 2021Publication date: January 20, 2022Applicant: AT&T Intellectual Property I, L.P.Inventors: Zhehui Zhang, Shu Shi, Rittwik Jana, Varun Gupta
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Publication number: 20210368029Abstract: One embodiment described herein provides a system and method for path control in a network. During operation, in response to determining that a path-control condition is met, an end host in the network can determine an offset value to be applied to a packet header of a packet, modify the packet header by applying the determined offset value, and forward the packet based on the modified packet header.Type: ApplicationFiled: May 20, 2020Publication date: November 25, 2021Applicant: Alibaba Group Holding LimitedInventors: Zhehui Zhang, Xiangning Yu, Haiyong Wang, Haiyang Zheng, Jiayao Hu, Guohui Wang
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Patent number: 11166068Abstract: Aspects of the subject disclosure may include, for example, receiving, over a communication network, a plurality of requests for frames of video content to provide to a mobile device. Further embodiments can include determining a first portion of the plurality of requests are for pre-fetch frames of the video content, and providing, over the communication network, the pre-fetch frames to the mobile device over a default bearer path. Additional embodiments can include determining a second portion of the plurality of requests are for emergent frames of the video content, and providing, over the communication network, the emergent frames to the mobile device over a dedicated bearer path. Other embodiments are disclosed.Type: GrantFiled: March 2, 2021Date of Patent: November 2, 2021Assignee: AT&T Intellectual Property I, L.P.Inventors: Zhehui Zhang, Shu Shi, Rittwik Jana, Varun Gupta
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Publication number: 20210185394Abstract: Aspects of the subject disclosure may include, for example, receiving, over a communication network, a plurality of requests for frames of video content to provide to a mobile device. Further embodiments can include determining a first portion of the plurality of requests are for pre-fetch frames of the video content, and providing, over the communication network, the pre-fetch frames to the mobile device over a default bearer path. Additional embodiments can include determining a second portion of the plurality of requests are for emergent frames of the video content, and providing, over the communication network, the emergent frames to the mobile device over a dedicated bearer path. Other embodiments are disclosed.Type: ApplicationFiled: March 2, 2021Publication date: June 17, 2021Applicant: AT&T Intellectual Property I, L.P.Inventors: Zhehui Zhang, Shu Shi, Rittwik Jana, Varun Gupta
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Patent number: 10972789Abstract: Aspects of the subject disclosure may include, for example, receiving, over a communication network, a plurality of requests for frames of video content to provide to a mobile device. Further embodiments can include determining a first portion of the plurality of requests are for pre-fetch frames of the video content, and providing, over the communication network, the pre-fetch frames to the mobile device over a default bearer path. Additional embodiments can include determining a second portion of the plurality of requests are for emergent frames of the video content, and providing, over the communication network, the emergent frames to the mobile device over a dedicated bearer path. Other embodiments are disclosed.Type: GrantFiled: June 3, 2019Date of Patent: April 6, 2021Assignee: AT&T Intellectual Property I, L.P.Inventors: Zhehui Zhang, Shu Shi, Rittwik Jana, Varun Gupta
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Publication number: 20200382835Abstract: Aspects of the subject disclosure may include, for example, receiving, over a communication network, a plurality of requests for frames of video content to provide to a mobile device. Further embodiments can include determining a first portion of the plurality of requests are for pre-fetch frames of the video content, and providing, over the communication network, the pre-fetch frames to the mobile device over a default bearer path. Additional embodiments can include determining a second portion of the plurality of requests are for emergent frames of the video content, and providing, over the communication network, the emergent frames to the mobile device over a dedicated bearer path. Other embodiments are disclosed.Type: ApplicationFiled: June 3, 2019Publication date: December 3, 2020Applicant: AT&T Intellectual Property I, L.P.Inventors: Zhehui Zhang, Shu Shi, Rittwik Jana, Varun Gupta