Patents by Inventor Wei Xi

Wei Xi 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).

  • Publication number: 20180373600
    Abstract: Systems and methods are disclosed for accessing data on a storage system. An apparatus, such as a data storage device or a computing device, may include a memory configured to store data. The apparatus is configured to determine an importance level for a file to be stored in the storage system. The data storage system includes one or more private storage clouds and one or more public storage clouds. The apparatus is also configured to generate a set of recovery data chunks based on the file and the importance level. The apparatus is further configured to store the set of recovery data chunks in the set of public storage clouds. The apparatus is further configured to store at least a portion of the file in the private storage cloud.
    Type: Application
    Filed: June 27, 2017
    Publication date: December 27, 2018
    Inventors: Jun XU, Wei XI, Guoxiao GUO, Eric BJORNSON, Jie YU, Ling Chih WEI
  • Publication number: 20180373439
    Abstract: Systems and methods are disclosed for accessing data on a storage system. An apparatus, such as a data storage device or a computing device, may include a memory configured to store data. The apparatus is configured to receive a request for a file stored in a storage system. The storage system includes a private storage cloud and a set of public storage clouds. The apparatus is also configured to determine whether the file is retrievable from the set of public storage clouds. If the file is retrievable from the set of public storage clouds the apparatus may determine whether access to the set of public storage clouds is faster than access to the private storage cloud and may retrieve the file from one or more of the private storage cloud and the set of public storage clouds.
    Type: Application
    Filed: June 27, 2017
    Publication date: December 27, 2018
    Inventors: Jun XU, Wei XI, Guoxiao GUO, Eric BJORNSON, Jie YU, Ling Chih WEI
  • Publication number: 20180351622
    Abstract: A method and apparatus for feeding back channel state information, a method and apparatus for allocating resources and a communications system. The method for feeding back channel state information includes: a UE feeds back channel state information to a base station, the channel state information including a link ID of a link between the UE and a neighboring UE, and/or a UEID of the neighboring UE, so that the base station allocates resources for each UE according to channel state information fed back by each UE. Hence, resource collision is reduced, and signal quality is improved.
    Type: Application
    Filed: July 20, 2018
    Publication date: December 6, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Wei XI, Hua ZHOU
  • Publication number: 20180302949
    Abstract: A network message notification apparatus and method and a communication system. The method includes: receiving a network message transmitted by a network device; the network message including indication information indicating a user identity range; parsing the indication information and determining whether a user identity of the UE falls within the user identity range indicated by the indication information; and determining whether the UE is notified by the network message according to a determination result. Hence, a magnitude of a network message in the communication system may be greatly reduced, and more UEs may be notified by using relatively few resources.
    Type: Application
    Filed: June 19, 2018
    Publication date: October 18, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Yulong SHI, Wei XI, Haibo XU
  • Publication number: 20180270789
    Abstract: An updating apparatus and method for an access control parameter and a communication system. The updating method includes: determining by a UE access class barring information for performing access control and update period information for updating the access class barring information; and updating the access class barring information by the UE based on the update period information. The UE itself improves fairness of the access, and the network side updates the access control parameter only when the network payload is modified, which may lower power consumption of the UE in access, avoid frequent occurrence of paging and reduce use of broadcast resources of the system.
    Type: Application
    Filed: May 17, 2018
    Publication date: September 20, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Meiyi JIA, Haibo XU, Wei XI
  • Publication number: 20180270790
    Abstract: An apparatus and method for paging a UE and a communications system. The method includes: calculating a first-grade paging group index based on an inherent identity of the UE, or based on an inherent identity of the UE and a network configuration parameter; calculating a second-grade paging group index based on a network identity allocated by an MME; receiving indication information for indicating paging group indices transmitted by a base station; determining whether the information contained in the indication information is consistent with the first-grade paging group index and the second-grade paging group index; and decoding a downlink data channel to determine whether the UE is paged when it is consistent. Hence, different paging groups may have identical or approximate numbers of UEs, which may reduce a probability of “false paging” of the overall cell.
    Type: Application
    Filed: May 22, 2018
    Publication date: September 20, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Yulong SHI, Haibo XU, Wei XI
  • Publication number: 20180167184
    Abstract: A transmission method and apparatus for a demodulation reference signal and a communications system. The transmission method includes: transmitting a DMRS by a transmitting device to a receiving device; the number of symbols in each subframe for transmitting the DMRS is configured as 1 or more than 2. Hence, more than 2 symbols for transmitting the DMRS are configured in each subframe, which may increase a transmission density of DMRS, and satisfy a demand of a new traffic, such as V2X, for a moving speed; or a single symbol for transmitting the DMRS is configured in each subframe, which may satisfy a demand of a low-speed mobile traffic, such as the cellular IOT, and lower overhead.
    Type: Application
    Filed: February 6, 2018
    Publication date: June 14, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Hua Zhou, Wei XI
  • Patent number: 9979138
    Abstract: The disclosure relates to a USB function-type magnetic cable, comprising a USB cable main body and a USB moveable plug; an end B of the USB cable main body is in moveable connection with the USB moveable plug; an end A of the USB cable main body is in connection with a computer or charger, the end B of the USB cable main body is in connection with a mobile device through the USB moveable plug; the end B of the USB cable main body comprises a first PCB board, and the first PCB board is configured to output a control signal to cut off a power supply circuit when detecting a temperature abnormity of the USB moveable plug or a supply voltage abnormity.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: May 22, 2018
    Inventor: Wei Xi Chen
  • Publication number: 20180131472
    Abstract: Embodiments of this disclosure provide a method and apparatus for performing multiuser superposition transmission over repetition-based transmission and a system. In this embodiment, the method includes: an eNB transmits repetition configuration information or repetition configuration information and modulation scheme information of second UE utilizing a repetition-based transmission technique to first UE paired with the second UE for performing MUST transmission, so that the first UE detects data of the second UE and performs interference cancellation according to the repetition configuration information or the repetition configuration information and the modulation scheme information of the second UE, so as to obtain data of the first UE. With the embodiments of this disclosure, unnecessary signaling overhead and repeated detection may be avoided, thereby improving performance and efficiency of MUST transmission.
    Type: Application
    Filed: January 5, 2018
    Publication date: May 10, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Wei XI, Hua ZHOU, Timothy J. MOULSLEY
  • Publication number: 20180123669
    Abstract: Embodiments of this disclosure provide a method and apparatus for feeding back channel state information, a user pairing method and apparatus, a data transmitting method and apparatus and a system. In one embodiment, the apparatus for feeding back channel state information includes: a feedback unit configured to feed back channel state information to an eNB, the channel state information including a precoding matrix index (PMI); a first channel quality indicator (CQI1) corresponding to the PMI; and azimuth angle reference information. With a new CSI feedback mechanism of the embodiments of this disclosure, an eNB may avoid selecting UEs with a relatively large azimuth angle for pairing, and may only select or preferentially select UEs with a relatively small azimuth angle for pairing, thereby preventing loss of gains of beamforming of paired UEs, and improving performance of MUST transmission.
    Type: Application
    Filed: December 27, 2017
    Publication date: May 3, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Wei XI, Hua ZHOU, Jianming WU
  • Patent number: 9959052
    Abstract: Write commands are received for a Data Storage Device (DSD) to store write data in a plurality of corresponding write locations on at least one disk of the DSD. At least a portion of the write data is cached in at least one Media Based Cache (MBC) region of the at least one disk based on a write cache policy for determining which write data is eligible for caching in the at least one MBC region. The at least one MBC region is used to cache data to be stored in other locations on the at least one disk. During an active time period when host commands are performed on the at least one disk, a portion of an I/O bandwidth for performing commands is used to copy the at least a portion of the write data to corresponding write locations of the plurality of corresponding write locations.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: May 1, 2018
    Assignee: Western Digital Technologies, Inc.
    Inventors: Jun Xu, Wei Xi, Guoxiao Guo, Jianyi Wang, Junpeng Niu
  • Patent number: 9667334
    Abstract: The present disclosure provides a method and apparatus for transmitting a common signal in hybrid beamforming. The method includes: acquiring an analog common signal to be transmitted; selecting a different codeword for each RF chain from a codebook for analog beamforming and obtaining an analog beamformer; beamforming the analog common signal to be transmitted in each RF chain according to the analog beamformer; and transmitting the beamformed analog common signal in each RF chain.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: May 30, 2017
    Assignee: NTT DoCoMo, Inc.
    Inventors: Wei Xi, Xiaolin Hou, Huiling Jiang
  • Publication number: 20170092151
    Abstract: A second language instruction system enabling a user to learn a second language through one or more life-like scenarios in a virtual world. The second language instruction system includes a computing device in electrical communication with a server via a network, the computing device is configured to assess the second language abilities of the user, receive one or more scenario preferences of the user, and generate a customized learning syllabus at least partially based on the assessed second language abilities of the user and the received one or more scenario preferences of the user, portions of the customized learning syllabus are downloaded for use and deleted after completion to minimize the amount of data stored on the computing device.
    Type: Application
    Filed: September 24, 2015
    Publication date: March 30, 2017
    Inventors: Wei Xi, Rui Huang
  • Publication number: 20170011763
    Abstract: A data storage device includes a disk, a head, a microactuator, a coarse actuator, and a servo controller. The microactuator is configured to position the head relative to the disk. The coarse actuator is configured to position the microactuator relative to the disk. The servo controller is configured to generate an adjusted position error signal based on a position error signal and an estimated microactuator position signal. The servo controller is also configured to filter the adjusted position error signal with a shaping filter to generate a filtered position error signal, and to provide sliding mode control of the coarse actuator based at least partially on the filtered position error signal.
    Type: Application
    Filed: August 17, 2015
    Publication date: January 12, 2017
    Applicants: Western Digital Technologies, Inc., The Regents of the University of California
    Inventors: Minghui Zheng, Masayoshi Tomizuka, Xu Chen, Wei Xi, Guoxiao Guo
  • Patent number: 9542966
    Abstract: A data storage device includes a disk, a head, a microactuator, a coarse actuator, and a servo controller. The microactuator is configured to position the head relative to the disk. The coarse actuator is configured to position the microactuator relative to the disk. The servo controller is configured to generate an adjusted position error signal based on a position error signal and an estimated microactuator position signal. The servo controller is also configured to filter the adjusted position error signal with a shaping filter to generate a filtered position error signal, and to provide sliding mode control of the coarse actuator based at least partially on the filtered position error signal.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: January 10, 2017
    Assignees: Western Digital Technologies, Inc., The Regents of the University of California
    Inventors: Minghui Zheng, Masayoshi Tomizuka, Xu Chen, Wei Xi, Guoxiao Guo
  • Publication number: 20160315682
    Abstract: Robust crowd counting is an important yet challenging task of interest in a number of applications and is compounded by the fact that crowd behavior is unpredictable. Traditional approaches that tackle these issues are mainly classified into two categories: video based recognition and non-image based localization. However, both suffer inherent drawbacks such as being limited to line-of-sight or requiring people to carry specific electronic devices which limit them even within relatively well controlled environments without considering public locations or rapidly emerging events. Accordingly, it would be beneficial to provide a system that implements a device free crowd counting methodology with no impact on network capacity and/or performance.
    Type: Application
    Filed: April 20, 2016
    Publication date: October 27, 2016
    Inventors: XUE LIU, WEI XI, JIZHONG ZHAO, XIANG-YANG LI
  • Patent number: 9424868
    Abstract: A data storage device is disclosed comprising a spindle motor configured to rotate a disk, wherein the spindle motor comprises a plurality of windings, and a head actuated over the disk. The windings of the spindle motor are commutated based on a commutation sequence while applying a periodic driving voltage to each winding. During a seek operation to seek the head a seek length, an amplitude of the periodic driving voltage is adjusted according to a driving profile corresponding to the seek length, wherein the driving profile compensates for a power disturbance during the seek operation.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: August 23, 2016
    Assignee: Western Digital Technologies, Inc.
    Inventors: Michael Troy Nicholls, Wei Xi, Jie Wan, Jie Yu, Jun Xu, Danny J. Kastler
  • Publication number: 20160182138
    Abstract: The present disclosure provides a method and apparatus for transmitting a common signal in hybrid beamforming. The method includes: acquiring an analog common signal to be transmitted; selecting a different codeword for each RF chain from a codebook for analog beamforming and obtaining an analog beamformer; beamforming the analog common signal to be transmitted in each RF chain according to the analog beamformer; and transmitting the beamformed analog common signal in each RF chain.
    Type: Application
    Filed: December 18, 2015
    Publication date: June 23, 2016
    Applicant: NTT DoCoMo, Inc.
    Inventors: Wei XI, Xiaolin HOU, Huiling JIANG
  • Patent number: 9369890
    Abstract: To increase the number of CSI-RSs for interference measurement to improve interference measurement accuracy, a first reference signal for channel state measurement and a second reference signal for interference measurement are assigned to reference signal resources defined for transmission of the first reference signal, and a mobile terminal apparatus that supports both the first reference signal and the second reference signal is notified of pattern information to identify an assignment pattern of the first reference signal and the second reference signal. A second mobile terminal apparatus that supports the first reference signal and that does not support the second reference signal is notified of pattern information to identify an assignment pattern of the first reference signal, and of assignment information indicating that resources assigned the second reference signal are assigned a third reference signal of zero power for channel state measurement.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: June 14, 2016
    Assignee: NTT DOCOMO, INC.
    Inventors: Satoshi Nagata, Yoshihisa Kishiyama, Anass Benjebbour, Wei Xi
  • Patent number: D832263
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: October 30, 2018
    Inventor: Wei Xi Chen