Patents by Inventor Pengkai Zhao

Pengkai Zhao 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: 20190281504
    Abstract: This disclosure relates to techniques for a wireless device to indicate a preferred bandwidth part and duty cycle in a cellular communication system. A wireless device and a cellular base station may establish a radio resource control connection. The wireless device may transmit an indication of a preferred bandwidth part, or a preferred communication duty cycle, or both, to the cellular base station. The cellular base station may select a bandwidth part, or communication duty cycle, or both, based at least in part on the indication provided by the wireless device, and may transmit an indication of the selected bandwidth part, communication duty cycle, or both, to the wireless device. The cellular base station and the wireless device may perform cellular communication using the selected bandwidth part, communication duty cycle, or both.
    Type: Application
    Filed: February 27, 2019
    Publication date: September 12, 2019
    Inventors: Yi Su, Yuchul Kim, Pengkai Zhao, Wei Zhang, Sami M. Almalfouh, Wei Zeng, Haitong Sun, Dawei Zhang, Yu Zhang, Tianyan Pu, Zhu Ji, Johnson O. Sebeni, Yang Li
  • Publication number: 20190280413
    Abstract: The present disclosure provides a connector which is a combination of at least one power pin, one plastic member, and one signal pin, wherein the power pin includes a columnar metal block, each plastic member is connected to the columnar metal block at side surface, each signal pin is attached to a side surface of the plastic member, and extends to two bottom surfaces of the plastic member to form contact surfaces with predetermined areas on the two bottom surfaces; wherein, the contact surface on first bottom surface of the plastic member is flush with first bottom surface of the metal block, and the contact surface on second bottom surface of the plastic member is flush with second bottom surface of the metal block.
    Type: Application
    Filed: December 28, 2018
    Publication date: September 12, 2019
    Applicant: Delta Electronics,Inc.
    Inventors: Shouyu HONG, Qingdong CHEN, Ganyu ZHOU, Pengkai JI, Yiqing YE, Zhenqing ZHAO
  • Publication number: 20190253229
    Abstract: Systems, apparatuses, and methods for computing transport block size (TB S) for channels with shortened transmission time interval (sTTI). An initial size may be determined based on one or more TBS tables. The initial size may be scaled by a factor associated with an sTTI channel. A TBS table is selected based on the one or more TBS tables. The scaled size may be rounded based on the selected TBS table to generate a TBS for the sTTI channel.
    Type: Application
    Filed: February 7, 2019
    Publication date: August 15, 2019
    Inventors: Seyedkianoush HOSSEINI, Amir FARAJIDANA, Ahmed Omar Desouky ALI, Thiagarajan SIVANADYAN, Wenshu ZHANG, Pengkai ZHAO
  • Patent number: 10356755
    Abstract: Certain aspects of the present disclosure relate to methods and apparatus relating to intelligent resource assignment to increase throughput in LTE multiple input multiple output (MIMO) and carrier aggregation (CA) capable devices. In certain aspects, a MIMO and CA capable wireless communication device communicates with a base station (BS) on multiple component carriers (CCs) through multiple radio frequency (RF) chains. In such aspects, the device tentatively switches one or more first RF chains, not assigned to a first CC of the multiple CCs, to the first CC for evaluating a rank of the first CC. The device then determines that the first CC has a higher rank indication (RI) with the one or more RF chains. The device subsequently evaluates one or more performance factors, in conjunction with the higher rank, based on which the device then additionally assigns one or more second RF chains to the first CC.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: July 16, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Akash Kumar, Pengkai Zhao, Narayanan Pazhedath Illath, Hargovind Prasad Bansal, Vijayvaradharaj Tirucherai Muralidharan, Ahmed Khan, Mridul Agarwal, Aritra Ukil
  • Publication number: 20190166608
    Abstract: Certain aspects of the present disclosure relate to methods and apparatus relating to intelligent resource assignment to increase throughput in LTE multiple input multiple output (MIMO) and carrier aggregation (CA) capable devices. In certain aspects, a MIMO and CA capable wireless communication device communicates with a base station (BS) on multiple component carriers (CCs) through multiple radio frequency (RF) chains. In such aspects, the device tentatively switches one or more first RF chains, not assigned to a first CC of the multiple CCs, to the first CC for evaluating a rank of the first CC. The device then determines that the first CC has a higher rank indication (RI) with the one or more RF chains. The device subsequently evaluates one or more performance factors, in conjunction with the higher rank, based on which the device then additionally assigns one or more second RF chains to the first CC.
    Type: Application
    Filed: November 27, 2017
    Publication date: May 30, 2019
    Inventors: Akash KUMAR, Pengkai ZHAO, Narayanan PAZHEDATH ILLATH, Hargovind Prasad BANSAL, Vijayvaradharaj TIRUCHERAI MURALIDHARAN, Ahmed KHAN, Mridul AGARWAL, Aritra UKIL
  • Publication number: 20190157175
    Abstract: The present invention provides a power module and a manufacturing method thereof. The power module includes a carrier board and a lead component stacked relative to the carrier board. The lead component includes an initial plane, plural first pins and plural second pin. The initial plane includes a vertical projection overlapping with the carrier board. The first pins are electrically connected to the carrier board and vertical to the initial plane. The second pins are electrically connected to the carrier board and vertical to the initial plane. An isolation gap is disposed in the initial plane and located between the first pins and the second pins. The initial plane is separated into a first plane and a second plane by the isolation gap, so as to electrically isolate the first pins and the second pins from each other.
    Type: Application
    Filed: January 29, 2019
    Publication date: May 23, 2019
    Inventors: Pengkai Ji, Shouyu Hong, Zhenqing Zhao, Jianhong Zeng
  • Publication number: 20190124586
    Abstract: Methods, systems, and devices for wireless communications are described. An exemplary method includes receiving a signal corresponding to a frequency band, scanning for communications activity within the frequency band, wherein scanning for communications activity within the frequency band comprises performing a correlation calculation on samples of the signal, and determining whether to attempt a connection establishment within the frequency band based at least in part on the correlation calculation on samples of the signal. When the scanning identifies an indication of activity, a scanning device may attempt to establish a connection with a base station within the frequency band. When the scanning identifies an indication of no activity, a scanning device may refrain from attempting to establish a connection with a base station within the frequency band, and may perform the correlation-enhanced frequency scanning on a different frequency band.
    Type: Application
    Filed: October 24, 2017
    Publication date: April 25, 2019
    Inventors: Mustafa Emin Sahin, Raghu Challa, Pengkai Zhao, Parisa Cheraghi, Supratik Bhattacharjee, Yongle Wu
  • Publication number: 20180176040
    Abstract: Certain aspects of the present disclosure relate to techniques for estimating a channel using soft-windowing. A user equipment (UE) may determine, based on a cyclic prefix (CP) length of a channel, a timing window for sampling reference signals transmitted on the channel, determine a set of weights to apply to samples obtained within the determined timing window, wherein each weight corresponds to a sample obtained within the determined window, and estimate the channel by applying the weights to the samples.
    Type: Application
    Filed: December 14, 2017
    Publication date: June 21, 2018
    Inventors: Yongle WU, Pengkai ZHAO, Supratik BHATTACHARJEE, Amir FARAJIDANA, Wenshu ZHANG, Michael Lee MCCLOUD
  • Publication number: 20180091108
    Abstract: A method, a computer-readable medium, and an apparatus are disclosed for energy efficient multichannel communications. In one aspect, the apparatus may communicate using a plurality of channels working in parallel where the plurality of channels may share an LNA. Additionally, the apparatus may determine a set of parameters for the plurality of channels to maximize energy efficiency. The apparatus may therefore configure the plurality of channels based on the set of parameters. As such, the apparatus supports multichannel communications with a common LNA structure while providing energy optimization for the multichannel communications. Accordingly, multichannel communications can be provided using a shared LNA structure that reduces implementation cost and more efficiently utilizes available power resources.
    Type: Application
    Filed: September 22, 2017
    Publication date: March 29, 2018
    Inventors: Pengkai ZHAO, Supratik BHATTACHARJEE, Jong Hyeon PARK, Parvathanathan SUBRAHMANYA, Brian Clarke BANISTER, Madihally NARASIMHA
  • Patent number: 9338668
    Abstract: In a wireless communication system, carrier aggregation may be used to provide desired amounts of bandwidth, where a primary carrier and one or more secondary carriers are aggregated. At the receive side of a system in which the aggregated carriers are in a single frequency band, an amplifier may be used to apply a common gain to the aggregated carriers in the single frequency band, and the common gain may be determined as a function of indications of received signal quality associated with groups of aggregated carriers containing one or more of the aggregated carriers, where one group contains the primary carrier and possible one or more secondary carriers and another group contains only secondary carriers.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: May 10, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Mariam Motamed, Wesley A. Sampson, Alexei Yurievitch Gorokhov, Pengkai Zhao
  • Publication number: 20150049651
    Abstract: Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to dynamically updating filtering configuration in modem baseband processing. A method is provided for wireless communications. The method may be performed, for example, by a user equipment (UE). The method generally includes detecting one or more conditions regarding one or more metrics of a received signal and updating, based on the detection, a configuration of one or more filters designed to mitigate an effect of spurious signals associated with (e.g., that fall within) a bandwidth of the received signal.
    Type: Application
    Filed: August 13, 2014
    Publication date: February 19, 2015
    Inventors: Gautham HARIHARAN, Pengkai ZHAO, Levent AYDIN, Mariam MOTAMED, Alexei Yurievitch GOROKHOV
  • Publication number: 20140126401
    Abstract: In a wireless communication system, carrier aggregation may be used to provide desired amounts of bandwidth, where a primary carrier and one or more secondary carriers are aggregated. At the receive side of a system in which the aggregated carriers are in a single frequency band, an amplifier may be used to apply a common gain to the aggregated carriers in the single frequency band, and the common gain may be determined as a function of indications of received signal quality associated with groups of aggregated carriers containing one or more of the aggregated carriers, where one group contains the primary carrier and possible one or more secondary carriers and another group contains only secondary carriers.
    Type: Application
    Filed: October 24, 2013
    Publication date: May 8, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Mariam Motamed, Wesley A. Sampson, Alexei Yurievitch Gorokhov, Pengkai Zhao