Patents by Inventor Gang Gary Xu

Gang Gary Xu 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).

  • Patent number: 9729215
    Abstract: Methods and apparatuses for fronthaul signal compression and decompression. An apparatus for fronthaul signal compression includes a receiver, signal processing circuitry, and a fronthaul interface. The receiver is configured to receive one or more signals comprising complex samples. The signal processing circuitry is configured to construct vectors representing at least a portion of the complex samples; map the vectors to codeword indices in a vector quantization codebook; and process the codeword indices into an output signal. The fronthaul interface is configured to transmit the output signal via a fronthaul communication link of a wireless network. The vectors may be constructed according to the selected vectorization method. The vector quantization codebook may be selected from a set of vector quantization codebooks generated based on training signals and signaled.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: August 8, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Md. Saifur Rahman, Boon Loong Ng, Gang Gary Xu, Jianzhong Zhang, Hongbo Si
  • Patent number: 9356762
    Abstract: Electric Vehicle Service Equipment (EVSE) and Electric Vehicle (EV) are disclosed n. In an example embodiment, a modem is coupled to the pilot wire that couples the EVSE and the EV. The modem transmits both pulse width modulation (PWM) command signals and power line communication (PLC) signals to a remote device via the pilot wire. The modem interleaves the PWM and PLC signals on the pilot wire so that latency requirements for the PWM signals are maintained. The modem supports parallel protocol stacks in which PLC signals are processed in a first path and PWM signals are processed in a second path that bypasses the first path and provides the PWM signals directly to a MAC layer. The modem may create a modified frame for the PLC signals to maintain the latency requirements.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: May 31, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ramanuja Vedantham, Gang Gary Xu, Donald P. Shaver
  • Publication number: 20150372728
    Abstract: Methods and apparatuses for fronthaul signal compression and decompression. An apparatus for fronthaul signal compression includes a receiver, signal processing circuitry, and a fronthaul interface. The receiver is configured to receive one or more signals comprising complex samples. The signal processing circuitry is configured to construct vectors representing at least a portion of the complex samples; map the vectors to codeword indices in a vector quantization codebook; and process the codeword indices into an output signal. The fronthaul interface is configured to transmit the output signal via a fronthaul communication link of a wireless network. The vectors may be constructed according to the selected vectorization method. The vector quantization codebook may be selected from a set of vector quantization codebooks generated based on training signals and signaled.
    Type: Application
    Filed: June 19, 2015
    Publication date: December 24, 2015
    Inventors: Md. Saifur Rahman, Boon Loong Ng, Gang Gary Xu, Jianzhong Zhang, Hongbo Si
  • Publication number: 20150229458
    Abstract: Electric Vehicle Service Equipment (EVSE) and Electric Vehicle (EV) are disclosed n. In an example embodiment, a modem is coupled to the pilot wire that couples the EVSE and the EV. The modem transmits both pulse width modulation (PWM) command signals and power line communication (PLC) signals to a remote device via the pilot wire. The modem interleaves the PWM and PLC signals on the pilot wire so that latency requirements for the PWM signals are maintained. The modem supports parallel protocol stacks in which PLC signals are processed in a first path and PWM signals are processed in a second path that bypasses the first path and provides the PWM signals directly to a MAC layer. The modem may create a modified frame for the PLC signals to maintain the latency requirements.
    Type: Application
    Filed: April 21, 2015
    Publication date: August 13, 2015
    Inventors: Ramanuja Vedantham, Gang Gary Xu, Donald P. Shaver
  • Patent number: 9014247
    Abstract: Systems and methods are disclosed for communicating on a pilot wire between Electric Vehicle Service Equipment (EVSE) and an Electric Vehicle (EV). In an example embodiment, a modem is coupled to the pilot wire that couples the EVSE and the EV. The modem transmits both pulse width modulation (PWM) command signals and power line communication (PLC) signals to a remote device via the pilot wire. The modem interleaves the PWM and PLC signals on the pilot wire so that latency requirements for the PWM signals are maintained. The modem supports parallel protocol stacks in which PLC signals are processed in a first path and PWM signals are processed in a second path that bypasses the first path and provides the PWM signals directly to a MAC layer. The modem may create a modified frame for the PLC signals to maintain the latency requirements.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: April 21, 2015
    Assignee: Texas Instruments Incorporated
    Inventors: Ramanuja Vedantham, Gang Gary Xu, Donald P. Shaver