Patents by Inventor Xiaodong Wang

Xiaodong Wang 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).

  • METHODS, SYSTEMS, AND MEDIA FOR PARTIAL DOWNLOADING IN WIRELESS DISTRIBUTED NETWORKS
    Publication number: 20140022970
    Abstract: Methods, systems, and media for partial downloading in wireless distributed networks are provided. In some embodiments, methods for selecting numbers of symbols to be transmitted on a plurality of channels are provided, the methods comprising: for each of the plurality of channels, calculating using a hardware processor an increase in power that will be used by that channel if it transmits a symbol; selecting one of the plurality of channels with the smallest increase in power using the hardware processor; and allocating the symbol to the one of the plurality of channels using the hardware processor.
    Type: Application
    Filed: July 22, 2013
    Publication date: January 23, 2014
    Inventors: Chen Gong, Xiaodong Wang
  • Methods and apparatuses for detecting deviations from legitimate operation on a wireless network
    Patent number: 8630308
    Abstract: Methods and apparatuses for detecting deviations from legitimate operation on a wireless network. The method includes detecting a sequence of observable events related to operation of an entity in the wireless network, and determining from the detected sequence of observable events for a particular entity in the wireless network what number of idle slots occurred between two consecutive observable events to provide a first output. The method further includes obtaining a second output corresponding to the number of idle slots between two consecutive observable events for legitimate operation of any entity in the wireless network using the network transmission protocol, and comparing a function of the first output with a function of the second output to determine whether or not the particular entity is deviating from legitimate operation of the network transmission protocol.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: January 14, 2014
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Xiaodong Wang, Alberto Lopez Toledo
  • PIPERIDINONE DERIVATIVES AS MDM2 INHIBITORS FOR THE TREATMENT OF CANCER
    Publication number: 20140011796
    Abstract: The present invention provides MDM2 inhibitor compounds of Formula I, wherein the variables are defined above, which compounds are useful as therapeutic agents, particularly for the treatment of cancers. The present invention also relates to pharmaceutical compositions that contain an MDM2 inhibitor.
    Type: Application
    Filed: September 12, 2013
    Publication date: January 9, 2014
    Applicant: AMGEN INC.
    Inventors: Michael David BARTBERGER, Ana Gonzalez Buenrostro, Hilary Plake Beck, Xiaoqi Chen, Richard Victor Connors, Jeffrey Deignan, Jason Duquette, John Eksterwicz, Benjamin Fisher, Brian Matthew Fox, Jiasheng Fu, Zice Fu, Felix Gonzalez Lopez De Turiso, Michael William Gribble, Dann James Gustin, Julie Anne Heath, Xin Huang, Xianyun Jiao, Michael Johnson, Frank Kayser, David John Kopecky, Sujen Lai, Yihong Li, Zhihong Li, Jiwen Liu, Jonathan Dante Low, Brian Stuart Lucas, Zhihua Ma, Lawrence R. McGee, Joel McIntosh, Dustin McMinn, Julio Cesar Medina, Jeffrey Thomas Mihalic, Steven Howard Olson, Yosup Rew, Philip Marley Roveto, Daqing Sun, Xiaodong Wang, Yingcai Wang, Xuelei Yan, Ming Yu, Jiang Zhu
  • METHOD AND APPARATUS FOR IDENTIFYING WIRELESS PERIPHERALS AND THEIR STATES AT A DOCKING HOST FOR WIRELESS DOCKING
    Publication number: 20140013014
    Abstract: Various aspects of the present disclosure enable a docking host that manages a docking environment to establish an initial connection between the docking host and one or more wireless peripheral devices to perform functionality determination of the wireless peripherals devices. The docking host may store the results of the functionality and, upon receiving a request from a dockee to access the functionality that the docking host may provide, will update the results. In one aspect of the disclosed approach, the docking host may determine the current state of the wireless peripheral devices before advertising any functionality information to the dockee. Other aspects, embodiments, and features are also claimed and described.
    Type: Application
    Filed: February 3, 2013
    Publication date: January 9, 2014
    Applicant: QUALCOMM INCORPORATED
    Inventors: Xiaolong HUANG, Xiaodong WANG, Vijayalakshmi R. RAVEENDRAN
  • APPARATUS FOR MIXED SIGNAL INTERFACE CIRCUITRY AND ASSOCIATED METHODS
    Publication number: 20140002184
    Abstract: An integrated circuit (IC) includes a plurality of pads adapted to send or receive signals, and a plurality of mixed signal interface blocks, each of which is coupled to a corresponding pad in the plurality of pads. Furthermore, each mixed signal interface block in the plurality of mixed signal interface blocks is adapted to be configurable to provide selected functionality independently of the other mixed signal interface blocks.
    Type: Application
    Filed: December 30, 2012
    Publication date: January 2, 2014
    Applicant: Silicon Laboratories Inc.
    Inventors: Jinwen Xiao, Pavel Konecny, Axel Thomsen, Clayton Daigle, Xiaodong Wang, John Khoury, Alan Westwick, Shahram Tadayon
  • APPARATUS FOR MIXED SIGNAL INTERFACE ACQUISITION CIRCUITRY AND ASSOCIATED METHODS
    Publication number: 20140002133
    Abstract: An integrated circuit (IC) includes a plurality of pads adapted to communicate signals with a circuit external to the IC, and a first mixed signal interface block coupled to a first pad in the plurality of pads, where the first mixed signal interface block is adapted to receive a first trigger signal from the circuit external to the IC and to provide a second trigger signal. The IC further includes a second mixed signal interface block coupled to a second pad in the plurality of pads, where the second mixed signal interface block is adapted to receive and track a first input signal from the circuit external to the IC in a first mode of operation of the IC.
    Type: Application
    Filed: March 13, 2013
    Publication date: January 2, 2014
    Inventors: Clayton Daigle, Jinwen Xiao, Axel Thomsen, Subrata Roy, Xiaodong Wang
  • Transmission for half-duplex relay in fading channel and rateless code configuration
    Patent number: 8588112
    Abstract: In one aspect of the invention, a method for transmission in a wireless communication system includes selecting by a signal destination one of a source-destination direct transmission, a decode-forward relay transmission, and a compress-forward transmission, responsive to channel gains between a signal source and a relay, between the signal source and the signal destination, and between the relay and the signal destination; informing a selected transmission mode from the selecting step to the signal source and the relay; and operating in the selected transmission mode by the relay.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: November 19, 2013
    Assignee: NEC Laboratories America, Inc.
    Inventors: Momin Uppal, Guosen Yue, Xiaodong Wang
  • Receiver with prefiltering for discrete fourier transform-spread-orthogonal frequency division multiplexing (DFT-S-OFDM) based systems
    Patent number: 8576959
    Abstract: A receiver for discrete Fourier transform-spread-orthogonal frequency division multiplexing (DFT-S-OFDM) based systems, including a prefilter for received signal codeword(s); and a log-likelihood ratio LLR module responsive to the prefilter; wherein the prefilter includes a pairing and whitening module that based on channel estimates and data rate enables the LLR module to perform either a Serial-In-Serial-Out (SISO) based log likelihood ratio processing of an output from the paring and whitening module or a two-symbol max-log soft output demodulator (MLSD) based log likelihood ratio processing of an output from the pairing and whitening module.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: November 5, 2013
    Assignee: NEC Laboratories America, Inc.
    Inventors: Narayan Prasad, Xiaodong Wang, Shuangquan Wang
  • Double tilt transmission electron microscope sample holder for in-situ measurement of microstructures
    Patent number: 8569714
    Abstract: A double tilt sample holder for in-situ measuring mechanical and electrical properties of microstructures in transmission electron microscope (TEM) is provided. The sample holder includes a home-made hollow sample holder body, a sensor for measuring mechanical/electrical properties, a pressing piece, a sample holder head, a sensor carrier. The sensor for measuring mechanical/electrical properties is fixed on the sensor carrier on the sample holder head by the pressing piece, while the sensor carrier is connected to the sample holder head through a pair of supporting shafts located on sides of the sample holder head. The sensor carrier can tilt within the plane perpendicular to the ample holder head by revolving around the supporting shafts (i.e. tilting along Y axis at an angle of ±30°). The sample holder also allows obtaining mechanical/electrical parameters concurrently.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: October 29, 2013
    Assignee: Beijing University of Technology
    Inventors: Xiaodong Han, Yonghai Yue, Yuefei Zhang, Pan Liu, Kun Zheng, Xiaodong Wang, Ze Zhang
  • Extensible WSE Hub to Support a Multi-Hop Tree of USB Hubs or Peripherals over a Wireless Link
    Publication number: 20130282938
    Abstract: An extensible hub is disclosed for providing multi-hop wireless communication among universal serial bus (USB) devices, for example, utilizing a WiGig Serial Extension (WSE) air interface. The extensible hub may include a device protocol adaptation layer (PAL), as well as a host PAL, and further a bridge for providing a data flow path between the device and host PALs. The bridge may be configured to distinguish between request messages and response messages in accordance with a header on those messages. Further, the extensible hub may include virtual ports and may map device handles and endpoint handles to provide for routing of messages to the correct downstream devices in a multi-hop network tree.
    Type: Application
    Filed: November 29, 2012
    Publication date: October 24, 2013
    Applicant: QUALCOMM INCORPORATED
    Inventors: Xiaolong HUANG, Xiaodong WANG, Vijayalakshmi R. RAVEENDRAN
  • Transmission of an Information Sequence
    Publication number: 20130272440
    Abstract: A method implemented in a mobile communications system for data transmission is disclosed. The method includes selecting a set of parallel channels, determining transmission rank, and determining a precoding matrix of the transmission rank for the set of parallel channels, wherein the precoding matrix is formed by applying householder transformation to a vector to make a matrix and selecting one or more columns from the matrix. Other methods and apparatuses also are disclosed.
    Type: Application
    Filed: June 10, 2013
    Publication date: October 17, 2013
    Inventors: Mohammad Ali Khojastepour, Xiaodong Wang, Mohammad Madihian
  • Apparatuses and Methods for Hybrid Automatic Repeat Request (HARQ) Buffering Optimization
    Publication number: 20130272192
    Abstract: A wireless communications device is provided with a first cache unit coupled to a memory unit, a wireless communications module, and a hybrid automatic repeat request (HARQ) combine component coupled to the first cache unit. The wireless communications module receives from a cellular network a wireless signal carrying first data corresponding to an HARQ process. The HARQ combine component reads second data corresponding to the HARQ process from the memory unit into the first cache unit, and combines the first data and the second data for an HARQ combining procedure.
    Type: Application
    Filed: January 7, 2011
    Publication date: October 17, 2013
    Inventors: Chiao-Chih Chang, Chia-Ping Chen, Xiaodong Wang
  • METHODS AND SYSTEMS FOR CONVEYING SCHEDULING INFORMATION OF OVERLAPPING CO-SCHEDULED USERS IN AN OFDMA-MU-MIMO SYSTEM
    Publication number: 20130242926
    Abstract: A method implemented in a base station for conveying scheduling information in an orthogonal frequency division multiple access (OFDMA) multi-user (MU)-multiple input multiple output (MIMO) system is disclosed. The method includes transmitting to a first user equipment (UE) the scheduling information including first scheduling information of the first UE and at least a portion of second scheduling information of at least one second UE, wherein the scheduling information includes a resource block (RB) assigned to the first UE, the number of streams, and an indication of one or more dedicated reference symbol (RS) layers assigned to the first UE. Other methods, systems, and apparatuses also are disclosed.
    Type: Application
    Filed: May 7, 2013
    Publication date: September 19, 2013
    Applicant: NEC Laboratories America, Inc.
    Inventors: Narayan Prasad, Mohammad Ali Khojastepour, Meilong Jiang, Xiaodong Wang, Sampath Rangarajan
  • DATA REDIRECTION FOR UNIVERSAL SERIAL BUS DEVICES
    Publication number: 20130246663
    Abstract: Aspects of this disclosure relate to data transfer. In an example, aspects of this disclosure include a method that includes generating, at a host device, a Universal Serial Bus (USB) redirect configuration request for establishing a connection between a first USB device connected to a USB hub and a second USB device connected to the USB hub, wherein the connection between the first USB device and the second USB device does not include the host device. The method also includes requesting, after the connection between the first USB device and the second USB device has been established, data to be routed from the first USB device to the second USB device via the USB hub.
    Type: Application
    Filed: December 10, 2012
    Publication date: September 19, 2013
    Applicant: QUALCOMM Incorporated
    Inventors: Vijayalakshmi R. Raveendran, Xiaodong Wang, Xiaolong Huang, Jeffree S. Froelicher
  • Message-wise unequal error protection
    Patent number: 8539301
    Abstract: Message-wise unequal error protection is provided using codeword flipping to separate special and ordinary codewords without discarding any codewords. Special messages are encoded to ensure the codeword weight is less than a certain threshold weight. Ordinary messages are encoded to ensure the codeword weight is greater than the threshold weight. The bits of the codeword are flipped to enforce the weight criterion. Ordinary and special messages are encoded using different encodings to provide different levels of error protection. Upon receipt, codewords are separated into special and ordinary codewords for appropriate decoding. If a codeword is of indeterminate type, it is iteratively processed as both a special codeword and an ordinary codeword. The decoding result of each process is periodically checked to determine which decoding result satisfies decoding criteria.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: September 17, 2013
    Assignee: NEC Laboratories America, Inc.
    Inventors: Chen Gong, Guosen Yue, Xiaodong Wang
  • Multi-resolution precoding codebook
    Patent number: 8537914
    Abstract: Systems and methods are for generating a codebook by: generating a multi-resolution codebook by selecting a common precoder index from a low resolution codebook for a group of adjacent resource blocks (RB)s and for each RB within the group, selecting a high-resolution codebook to fine-tune each RB precoder; and generating feedback for the multi-resolution codebook by quantizing channel state variations.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: September 17, 2013
    Assignee: NEC Laboratories America, Inc.
    Inventors: Mohammad Ali Khojastepour, Xiaodong Wang
  • LT decoding and retransmission for wireless broadcast
    Patent number: 8539299
    Abstract: Methods and systems for doped rateless retransmission include receiving ratelessly coded symbols. An attempt is made to decode the coded symbols using a processor by creating an associated code graph that represents the structure of the rateless code used by the symbols. If the decoding attempt fails, an input node is selected from the code graph using a metric that gauges the number and degree of connections to the input node based on the code graph structure. The selected input node is then requested for retransmission of the selected input node by a feedback channel.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: September 17, 2013
    Assignee: NEC Laboratories America, Inc.
    Inventors: Guosen Yue, Momin A. Uppal, Xiaodong Wang
  • Methods and systems for providing feedback for beamforming and power control
    Patent number: 8537922
    Abstract: Methods and systems for providing feedback for beamforming and power control are provided. In some embodiments, the methods comprise: calculating a threshold associated with a subcarrier; receiving the subcarrier containing an information symbol at the receiver; determining a channel estimate of the subcarrier and a weighting vector for the information symbol; based at least on the channel estimate and the weighting vector, determining a power level of the subcarrier; comparing the power level to the threshold; generating a feedback signal indicating a first energy level to be used for the subcarrier based on the comparison; subsequent to generating the feedback signal, determining a second power level of the subcarrier; comparing the second power level to the threshold; and generating a second feedback signal to the transmitter indicating a second energy level to be used for the subcarrier.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: September 17, 2013
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Xiaodong Wang, Filippo Zuccardi Merli
  • Method and systems for conveying scheduling information of overlapping co-scheduled users in an OFDMA-MU-MIMO system
    Patent number: 8532051
    Abstract: Methods and systems for conveying or transmitting to any given user in an OFDMA-MU-MIMO system scheduling information of other co-scheduled users to permit the user to perform error-correction on received data and/or interference reduction on its received signals. The scheduling information can include resource block assignment, modulation constellations employed, coding rates employed, power levels utilized and precoder matrix indices used. Further, the scheduling information can be conveyed in part through dedicated reference symbol layers or pilot streams. Moreover, a base station may transmit a preliminary estimate of the total number of users the base station expects to schedule, or an upper-bound on the total number of users, to the MU-MIMO users to permit the MU-MIMO users to determine preferred precoder matrix indices and indications of channel quality indices.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: September 10, 2013
    Assignee: NEC Laboratories America, Inc.
    Inventors: Narayan Prasad, Mohammad Ali Khojastepour, Meilong Jiang, Xiaodong Wang, Sampath Rangarajan
  • MULTI-RESOLUTION PRECODING CODEBOOK
    Publication number: 20130230116
    Abstract: Systems and methods are for generating a codebook by: generating a multi-resolution codebook by selecting a common precoder index from a low resolution codebook for a group of adjacent resource blocks (RB)s and for each RB within the group, selecting a high-resolution codebook to fine-tune each RB precoder; and generating feedback for the multi-resolution codebook by quantizing channel state variations.
    Type: Application
    Filed: July 13, 2012
    Publication date: September 5, 2013
    Applicant: NEC LABORATORIES AMERICA, INC.
    Inventors: Mohammad Ali Khojastepour, Xiaodong Wang