公开(公告)号：US20210083925A1

公开(公告)日：2021-03-18

申请号：US17105229

申请日：2020-11-25

Applicant: Huawei Technologies Co., Ltd. ,  University of Science and Technology of China

Inventor： Ping SONG ,  Qiang LING ,  RenAi CHEN ,  Weiliang JI

IPC: H04L12/24

Abstract: A network fault analysis method and apparatus are described for performing fault analysis on a network element device based on an NF service. The method includes a fault detection network element obtaining log data that is generated by a to-be-detected network element in a past specified duration. After obtaining the log data, the fault detection network element determines, based on the obtained log data, a log feature corresponding to the log data, and searches, in a fault relational database, for a fault type corresponding to the log feature. After detecting the fault type, the fault detection network element sends the found fault type to a policy control network element, so that the policy control network element can determine a corresponding recovery measure based on the fault type, and the to-be-detected network element can process, by using the recovery measure, a fault that occurs.

公开(公告)号：US20210036234A1

公开(公告)日：2021-02-04

申请号：US16945060

申请日：2020-07-31

Applicant: SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Xiaomeng Li ,  Jieshun Cui ,  Xianglin Wang ,  Zhaoyu Zhang

IPC: H01L51/00 ,  C07C217/80 ,  C07C213/04 ,  C09K11/06 ,  C07C229/52 ,  C07C227/26

Abstract: A white light emitting material having a chemical structural formula represented by formula (I), a preparation method thereof and application thereof. The preparation method comprises subjecting tris(4-iodophenyl)amine and 4-methoxyphenylacetylene or tris(4-iodophenyl)amine and methyl 4-ethynylbenzoate to a coupling reaction under protection of a protective gas and catalysis of a Pd/Cu mixed catalyst, to obtain the white light emitting material. A novel temperature-sensitive light emitting material is synthesized through a one-step method. The material is applied to the field of diode luminescence based on the temperature-sensitive characteristic. White light luminescence can be finally realized only by reasonably controlling the temperature and duration time during heating a substrate. Compared with the existing art, the method greatly saves raw material costs and manufacturing process costs, and provides a novel idea and strategy for use of a white organic light emitting diode.

公开(公告)号：US20210021270A1

公开(公告)日：2021-01-21

申请号：US16320129

申请日：2017-10-16

Applicant: SOUTHERN UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Chenchang Zhan ,  Yongxiong Ji ,  Guigang Cai ,  Shuangxing Zhao

IPC: H03L5/02

Abstract: A low dropout linear voltage regulator is provided. In the low dropout linear voltage regulator, a power transistor has a source connected to a power source, a gate connected to an output terminal of an error amplifier, a drain connected to an output terminal of the low dropout linear voltage regulator. A dynamic Miller compensation network has a first terminal connected to the output terminal of the error amplifier, a second terminal connected to the output terminal of the low dropout linear voltage regulator. A controller has a first terminal connected to the gate of the power transistor, and a second terminal connected to a third terminal of the Miller compensation network. The controller is configured to detect a current at the output terminal of the low dropout linear voltage regulator and generate control signals according to the current to control connection and disconnection of each second resistance-capacitance branch in the dynamic Miller compensation network.

公开(公告)号：US10862817B2

公开(公告)日：2020-12-08

申请号：US16357564

申请日：2019-03-19

Applicant: Huawei Technologies Co., Ltd. ,  University of Science and Technology of China

Inventor： Kaiping Xue ,  Wenjia Wei ,  Qing Xu

IPC: H04L12/891 ,  H04L12/801 ,  H04L12/707 ,  H04L12/807 ,  H04L12/851 ,  H04L12/26

Abstract: Embodiments of the present disclosure provide a congestion control method, an apparatus, and a system. The method includes receiving, by a first device, an acknowledgement packet that is from a second device and that includes an ECE identifier. Based on an indication of the ECE identifier the first device starts monitoring a plurality of sub streams on a plurality of transmission paths between the first device and the second device, and grouping, into one set, sub streams that meet a congestion control condition. Additionally, intra-set congestion control is performed on the sub streams in the set. Separately congestion control is performed on a sub stream that is not in the set. The congestion control method is applied to a scenario in which data transmission is performed between the first device and the second device by using the MPTCP.

公开(公告)号：US10785698B2

公开(公告)日：2020-09-22

申请号：US16215160

申请日：2018-12-10

Applicant: SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Zidong Han ,  Yi Gong ,  Chenghao Zheng

IPC: H04W40/10 ,  H04L29/08 ,  H04W52/02 ,  H04W84/20

Abstract: Disclosed is a control method for controlling data return in a passive sensor network comprising an aggregation node and sensor nodes. The control method comprises the following steps: controlling the aggregation node to broadcast energy to the entire passive sensor network; controlling the sensor nodes to collect the energy broadcast by the aggregation node; clustering, according to a predetermined clustering rule, the sensor nodes and selecting cluster heads; and controlling each of the sensor nodes of each cluster to transmit data to a corresponding cluster head and then to the aggregation node or one of the sensor nodes of a cluster closer to the aggregation node so as to eventually transmit the data to the aggregation node and closing the sensor node that completes data transmission. In addition, a control device is also disclosed.

公开(公告)号：US20200152849A1

公开(公告)日：2020-05-14

申请号：US16657080

申请日：2019-10-18

Applicant: SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Jiaqing HE ,  Yi ZHOU ,  Liangwei FU ,  Yuexing CHEN ,  Dan FENG

IPC: H01L35/12 ,  H01L35/04 ,  H01L35/32

Abstract: Disclosed are a high performance thermoelectric device and a method of manufacturing the same at ultra-high speed. The high performance thermoelectric device includes segmented structures which may provide an optimal match between the thermoelectric materials and the environmental temperature difference; blocking layers and stress-buffering layers which can reduce interface element migration and longitudinal contact thermal expansion stress and increase bonding strength; phonon scattering layers and negative thermal expansion buffering layers inserted and fixing the thermoelectric leg, thereby increasing internal thermal resistance and improving transverse thermo-match for the high performance thermoelectric device; an inner package and an outer package, thus avoiding sublimation and oxidation of the thermoelectric materials and providing the thermoelectric device with enhanced impact resistance from outside.

公开(公告)号：US20200072915A1

公开(公告)日：2020-03-05

申请号：US16491702

申请日：2017-11-14

Applicant: University of Science and Technology of China

Inventor： Zongquan Zhou ,  Yu Ma ,  Tao Tu ,  Chuanfeng Li ,  Guangcan Guo

IPC: G01R33/12 ,  G01R33/032 ,  G01N21/65 ,  H01S3/16

Abstract: Provided is a quantum sensor based on a rare-earth-ion doped optical crystal, having: a rare-earth-ion doped optical crystal; a low temperature providing unit, which provides a low temperature operating environment to the rare-earth-ion doped optical crystal; a constant magnetic field generation unit, which applies a constant magnetic field to the rare-earth-ion doped optical crystal; a light field generation unit, which provides a light field performing optical pumping on the rare-earth-ion doped optical crystal to prepare the rare-earth-ions in an initial spin state, and a light field for exciting Raman scattering of the rare-earth-ion doped optical crystal; a pulsed magnetic field generation unit, which applies a pulsed magnetic field perpendicular to the constant magnetic field to the rare-earth-ion doped optical crystal to make the rare-earth-ion doped optical crystal generate a spin echo; and a heterodyne Raman scattering light field detection and analysis unit, which detects and analyzes a Raman scattering light field radiated from the rare-earth-ion doped optical crystal. Further provided are uses of this quantum sensor for magnetic field sensing and electric field sensing as well as a sensing method.

公开(公告)号：US10560719B2

公开(公告)日：2020-02-11

申请号：US15882346

申请日：2018-01-29

Applicant: Huawei Technologies Co., Ltd. ,  University of Science and Technology of China

Inventor： Fangdong Chen ,  Sixin Lin ,  Houqiang Li ,  Li Li

IPC: H04N19/58 ,  H04N19/124 ,  H04N19/172

Abstract: A video encoding and decoding method and apparatus are provided. The video encoding method includes: obtaining a first statistical characteristic of previous K frames of images of a video sequence; determining a first background frame; determining, according to the first statistical characteristic, a QP used for encoding the first background frame; encoding the first background frame according to the QP, to obtain a first background long-term reference frame; and encoding the (K+1)th frame of image of the video sequence to the (K+L)th frame of image of the video sequence according to the first background long-term reference frame. When encoding is performed on the (K+1)th frame of image of the video sequence to the (K+L)th frame of image of the video sequence, the used QP for encoding the background long-term reference frame is determined according to the first statistical characteristic related to video content of the previous K frames of images.

公开(公告)号：US10450529B2

公开(公告)日：2019-10-22

申请号：US15310828

申请日：2014-09-23

Applicant: SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Huaisong Yong ,  Dazhi Sun

IPC: C10M141/06 ,  C10M171/00 ,  C10M141/08 ,  C10M161/00 ,  C10M177/00 ,  B01F17/00

Abstract: Provided are a method for simultaneously and stably dispersing spherical nanoparticles in an oil medium by using layered nanosheets and an application thereof. The method comprises: (1) mixing the layered nanosheets and oil-soluble alkylamines to obtain a first mixture containing intercalated/exfoliated nano sheets; (2) mixing spherical nanoparticles and the oil medium to obtain a second mixture; and (3) mixing the first mixture, the second mixture and the oil medium to obtain a third mixture.

公开(公告)号：US10436722B2

公开(公告)日：2019-10-08

申请号：US15311879

申请日：2014-05-22

Applicant: University Of Science And Technology Of China

Inventor： Kun Gao ,  Jian Chen ,  Renfang Hu ,  Zhili Wang ,  Dajiang Wang ,  Zhiyun Pan ,  Wangsheng Chu ,  Shiqiang Wei

IPC: G02B27/00 ,  G01N23/083 ,  G02B5/18 ,  B05D1/00 ,  C23F1/00 ,  G21K1/06 ,  G02B27/44 ,  G21K7/00

Abstract: The invention provides a positive/negative phase shift bimetallic zone plate and production method thereof, wherein the positive/negative phase shift bimetallic zone plate comprises: a first metallic material having a positive phase shift; a second metallic material having a negative phase shift at a working energy point; wherein the first metallic material and the second metallic material are alternately arranged, so that the second metallic material replaces the blank portion in a cycle of a traditional zone plate.