Patents by Inventor Hui Ling

Hui Ling 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: 10446688
    Abstract: An oxide semiconductor device includes a substrate, a first patterned oxide semiconductor layer, a source electrode, a drain electrode, and a sidewall spacer. The first patterned oxide semiconductor layer is disposed on the substrate. The source electrode and the drain electrode are disposed on the first patterned oxide semiconductor layer. The sidewall spacer is disposed on a sidewall of the first patterned oxide semiconductor layer. The sidewall spacer may be used to improve the performance of blocking impurities from entering the first patterned oxide semiconductor layer via the sidewall, and the electrical performance and the reliability of the oxide semiconductor device may be enhanced accordingly.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: October 15, 2019
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Jen-Po Huang, Chien-Ming Lai, Yen-Chen Chen, Sheng-Yao Huang, Hui-Ling Chen, Seng Wah Liau, Han Chuan Fang
  • Publication number: 20190313404
    Abstract: An access point generates a trigger frame to trigger an uplink multi-user (MU) transmission by multiple client stations. The access point generates the trigger frame to include a common information field and multiple per-station information fields. The access point generates the common information field to include (i) a subfield that indicates a bandwidth of the uplink MU transmission, and (ii) information that indicates a guard interval and a long training field (LTF) mode to be used by the multiple client stations for the uplink MU transmission, and generates each per-station field to include respective frequency allocation information that indicates respective frequency resources to be used by the respective client station for the uplink MU transmission. The access point transmits the trigger frame to the multiple client stations to trigger the uplink MU transmission by the multiple client stations.
    Type: Application
    Filed: June 21, 2019
    Publication date: October 10, 2019
    Inventors: Liwen CHU, Yakun Sun, Hongyuan Zhang, Lei Wang, Jinjing Jiang, Hui-Ling Lou
  • Patent number: 10440598
    Abstract: A first communication device generates a range measurement packet (or a packet that includes a probe response frame, a TIM frame, etc.) associated with a range measurement signal exchange session between the first communication device and a second communication device. The first communication device records a time value of a first timer corresponding to a time of transmission of the packet, and includes timing information corresponding to the recorded time value in the packet. The first communication device transmits the packet to the second communication device. The timing information in the packet is useable by a third communication device to adjust time values corresponding to a second timer, which the third communication device includes.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: October 8, 2019
    Assignee: Marvell World Trade Ltd.
    Inventors: Liwen Chu, Sagar Tamhane, Hongyuan Zhang, Hui-Ling Lou
  • Publication number: 20190306824
    Abstract: A communication device determines an identifier of a wireless network with which the communication device is not associated. While the communication device is not associated with the wireless network, the communication device participates in a ranging procedure with an access point (AP) of the wireless network. The ranging procedure is for estimating a distance between the communication device and the AP based on measuring times of flight of transmissions between the communication device and the AP. Participating in the ranging procedure includes: the communication device transmitting a packet to the AP as part of the ranging procedure. The packet includes a PHY preamble, and the PHY preamble includes a signal field. The signal field includes a wireless network identifier subfield set to the identifier of the wireless network.
    Type: Application
    Filed: July 31, 2018
    Publication date: October 3, 2019
    Inventors: Liwen CHU, Christian BERGER, Niranjan GRANDHE, Hongyuan ZHANG, Hui-Ling LOU
  • Patent number: 10433309
    Abstract: A communication device assigns i) a first orthogonal frequency division multiplex (OFDM) tone block for a communication channel to a first communication device, and ii) a second OFDM tone block to a second communication device. The first OFDM tone block and the second OFDM block each span less than or equal to 10 MHz, and are both within a subchannel that spans a 20 MHz. The communication device generates an orthogonal frequency division multiple access (OFDMA) physical layer (PHY) data unit for transmission in the communication channel. The OFDMA PHY data unit is generated to include: a legacy preamble portion having legacy signal field that spans the subchannel; and a data portion that includes i) first data for the first communication device modulated to the first OFDM tone block, and second data for the second communication device modulated to the second OFDM tone block.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: October 1, 2019
    Assignee: Marvell World Trade Ltd.
    Inventors: Hongyuan Zhang, Yakun Sun, Hui-Ling Lou, Liwen Chu
  • Patent number: 10425908
    Abstract: The present disclosure describes methods and apparatus for enabling spontaneous location determination in a scheduled wireless communication environment. For example embodiments, a first wireless communication device includes a transceiver and a multiple recipient communication system. The transceiver is configured to receive from a second wireless communication device a request to participate in a location determination procedure (LDP) that is to occur at least partially during a communication period that is assigned to a third wireless communication device. The multiple recipient communication system is configured to generate a multiple recipient frame that encapsulates (i) data that is destined for the third wireless communication device and (ii) a response to the request to participate in the LDP.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: September 24, 2019
    Assignee: Marvell World Trade Ltd.
    Inventors: Sagar A. Tamhane, Sarang Shrikrishna Wagholikar, Liwen Chu, Hongyuan Zhang, Hui-Ling Lou
  • Publication number: 20190288798
    Abstract: A first communication device generates a media access control (MAC) frame that includes an indication of a change in a block acknowledgment (BA) session that was previously established between the first communication device and a second communication device. The first communication device transmits the MAC frame to the second communication device. The MAC frame is configured to cause the second communication device to adopt the change in the BA session in response to receiving the MAC frame.
    Type: Application
    Filed: July 31, 2018
    Publication date: September 19, 2019
    Inventors: Jinjing JIANG, Liwen CHU, Yi-Ling CHAO, Hongyuan ZHANG, Hui-Ling LOU
  • Publication number: 20190289495
    Abstract: A first communication device receives one or more aggregate medium access control (MAC) data units from respective one or more second communication devices, and generates one or more acknowledgement information fields. A first acknowledgement information field corresponds to a particular second communication device and includes a length indication that indicates a length of an acknowledgement field and the acknowledgment field of the indicated length. The length of the acknowledgement field is selected from a subset of predetermined lengths, among a set of predetermined lengths, the subset including multiple predetermined lengths that do not exceed a buffer size determined based on an acknowledgement setup procedure previously conducted between the first communication device and the particular second communication device.
    Type: Application
    Filed: June 3, 2019
    Publication date: September 19, 2019
    Inventors: Liwen CHU, Hongyuan ZHANG, Hui-Ling LOU
  • Publication number: 20190289548
    Abstract: Embodiments described herein provide a method for creating a low power wake-up radio frame. The method comprises generating, at an access point, a wake-up radio frame for transmission to one or more client stations, determining whether the wake-up radio frame is to be transmitted inside or outside a basic service set associated with the access point, the basic service set having a basic service set identifier that is used to identify the access point. And in response to determining that the wake-up radio frame is to be transmitted outside the basic service set, computing, a target frame check sequence for the wake-up radio frame without using the basic service set identifier associated with the basic service set, appending the target frame check sequence to the wake-up radio frame; and transmitting, to one or more client stations, the wake-up radio frame with the appended target frame check sequence.
    Type: Application
    Filed: January 31, 2019
    Publication date: September 19, 2019
    Inventors: Liwen Chu, Hongyuan Zhang, Hui-Ling Lou
  • Patent number: 10419143
    Abstract: The present disclosure includes systems and techniques relating to wireless local area network devices. Systems and techniques include multiplexing information for a single wireless communication device onto multiple radio pathways to produce a data packet, operating the multiple radio pathways to generate different portions of the data packet, and transmitting the data packet to the single wireless communication device by concurrent transmissions of the different portions of the data packet over different wireless channels.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: September 17, 2019
    Assignee: MARVELL INTERNATIONAL LTD.
    Inventors: Hongyuan Zhang, Hui-Ling Lou, Rohit U. Nabar
  • Publication number: 20190280831
    Abstract: A client station of a wireless local area network (WLAN) determines respective availabilities at the client station of a plurality of subchannels for a multi-user (MU) transmission, and generates a media access control (MAC) data unit (MPDU) that includes a MAC header. The MAC header includes a control field, and the control field includes a subfield having i) an identification (ID) that indicates the subfield includes subchannel availability information, and ii) a bitmap that indicates the respective availabilities at the client station of the plurality of subchannels. The client station transmits the MPDU to an access point of the WLAN for a subsequent allocation by the access point of wireless bandwidth for the MU transmission.
    Type: Application
    Filed: May 24, 2019
    Publication date: September 12, 2019
    Inventors: Liwen CHU, Lei WANG, Jinjing JIANG, Hongyuan ZHANG, Yakun SUN, Hui-Ling LOU
  • Publication number: 20190281658
    Abstract: Aspects of the disclosure provide an apparatus for wireless communication. The apparatus includes a transceiver and a processing circuit. The transceiver is configured to transmit and receive wireless signals. The processing circuit is configured to detect an error of a previous scheduled transmission of data units from the apparatus to another apparatus. The other apparatus provides scheduled resources for transmission between the two apparatuses. Further, the processing circuit is configured to determine resources that are scheduled by the other apparatus for the apparatus to perform retransmission, and provide one or more of the data units in the previous scheduled transmission to the transceiver for retransmission using the scheduled resources.
    Type: Application
    Filed: May 23, 2019
    Publication date: September 12, 2019
    Applicant: Marvell International Ltd.
    Inventors: Lei Wang, Liwen Chu, Jinjin Jiang, Hongyuan Zhang, Hui-Ling Lou
  • Patent number: 10411937
    Abstract: A communication device generates a first portion of a physical layer (PHY) preamble of a PHY data unit to include a first plurality of orthogonal frequency division multiplexing (OFDM) symbols. Each OFDM symbol of the first plurality of OFDM symbols is generated with a first OFDM tone spacing. The communication device generate a second portion of the PHY preamble to include a second plurality of OFDM symbols. Each OFDM symbol of the second plurality of OFDM symbols is generated with a second OFDM tone spacing that is a fraction 1/N of the first OFDM tone spacing, where N is a positive integer greater than one. The communication device generates a PHY data portion of the PHY data unit to include one or more third OFDM symbols. Each third OFDM symbol is generated with the second OFDM tone spacing.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: September 10, 2019
    Assignee: Marvell World Trade Ltd.
    Inventors: Hongyuan Zhang, Yakun Sun, Mingguang Xu, Rui Cao, Hui-Ling Lou
  • Patent number: 10411846
    Abstract: The present disclosure includes systems and techniques relating to wireless local area network devices. A described technique include accessing a data stream intended for transmission to a single wireless communication device; multiplexing the data stream to two or more radio pathways to produce a data packet; generating, via the two or more radio pathways, two or more different portions of the data packet based on an aggregated capacity of two or more wireless channels that are associated with the two or more radio pathways, the two or more radio pathways being respectively configured to use two or more groups of orthogonal frequency division multiplexing (OFDM) subcarriers to generate the two or more different portions of the data packet; and transmitting the data packet to the single wireless communication device by concurrent transmissions of the two or more different portions via the two or more wireless channels.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: September 10, 2019
    Assignee: MARVELL INTERNATIONAL LTD.
    Inventors: Hongyuan Zhang, Hui-Ling Lou, Rohit U. Nabar
  • Patent number: 10405265
    Abstract: The present disclosure includes systems and techniques relating to controlling access to a shared communication medium in a wireless communication system. In some implementations, a first communication device associated with a first basic service set (BSS) identified by a first BSS indicator receives a data unit transmitted by a second communication device. The data unit includes (i) a second BSS indicator indicating a second BSS associated with the second communication device and (ii) a duration indicator indicating a duration of time for which the shared communication medium is expected to be busy. An inter-BSS channel access counter is set based on the duration of time indicated by the duration indicator if the second BSS is different from the first BSS. An intra-BSS channel access counter is set based on the duration of time indicated by the duration indicator if the second BSS is the same as the first BSS.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: September 3, 2019
    Assignee: MARVELL INTERNATIONAL LTD.
    Inventors: Liwen Chu, Lei Wang, Jinjing Jiang, Hongyuan Zhang, Hui-Ling Lou
  • Patent number: 10404653
    Abstract: A communication device of a first wireless network determines that a first value of a first basic service set (BSS) color identifier is the same as a value of a second BSS color identifier corresponding to a neighboring second wireless network. In response, the communication device determines a second value of the first BSS color identifier. The communication device transmits one or more packets that each include i) an indication that the first BSS color identifier is changing, ii) the second value of the first BSS color identifier, and iii) a respective integer number of remaining beacon intervals corresponding to a start time when the second value of the first BSS color identifier will supersede the first value of the first BSS color identifier. Based on the start time, the communication device begins to use the second value of the first BSS color identifier with communications in the first wireless network.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: September 3, 2019
    Assignee: Marvell International Ltd.
    Inventors: Liwen Chu, Hongyuan Zhang, Lei Wang, Jinjing Jiang, Hui-Ling Lou
  • Publication number: 20190268099
    Abstract: A first communication device generates and transmits a first communication frame corresponding to a request to participate in a block acknowledgment procedure. The first communication frame includes: a first field indicating a number of buffers requested to be allocated at a second communication device for buffering data units to be transmitted by the first communication device, and a second field indicating a first maximum bitmap length supported by the first communication device. The first communication device receives a second communication frame corresponding to a response to the first communication frame. The second communication frame includes: a third field indicating a number of buffers allocated at the second communication device for buffering the data units transmitted by the first communication device, and a fourth field indicating a second maximum bitmap length supported by the second communication device.
    Type: Application
    Filed: July 31, 2018
    Publication date: August 29, 2019
    Inventors: Liwen CHU, Ken Kinwah HO, Hongyuan ZHANG, Hui-Ling LOU
  • Patent number: 10396292
    Abstract: Provided are a novel compound and an organic electronic device using the same.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: August 27, 2019
    Assignee: SHANGHAI NICHEM FINE CHEMICAL CO., LTD.
    Inventors: Hui-Ling Wu, Liang-Di Liao, Shwu-Ju Shieh, Chi-Chung Chen
  • Patent number: 10397193
    Abstract: Systems and methods for blind data leak prevention are provided. A first computer can determine if encrypted data matches a rule even without the encryption key used to encrypt the data. The first computer may encrypt the rule with a second encryption key and send the encrypted rule to a second computer, which may then encrypt the rule with the first encryption key—that is inaccessible to the first computer—and send the doubly encrypted rule back to the first computer. The first computer can then partially decrypt the rule using the second encryption key. The second computer can then encrypt data with the first encryption key and send to the first computer. The first computer can then determine if the partially encrypted rule matches the encrypted data.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: August 27, 2019
    Assignee: SONICWALL INC.
    Inventors: Hui Ling, Zhong Chen
  • Publication number: 20190261418
    Abstract: A client station receives from an access point (AP) a downlink packet that includes a trigger frame that is configured to prompt the client station to transmit an uplink packet to the AP. The trigger frame includes an indication of whether the client station is required to perform a channel sensing procedure to determine if one or more subchannels are not idle prior to transmitting the uplink packet. In response to the trigger frame indicating that the client station is required to perform the channel sensing procedure: the client station does not transmit the uplink packet in response to determining that the one or more subchannels are not idle. In response to the trigger frame indicating that the client station is not required to perform the channel sensing procedure, the client station transmits the uplink packet without measuring the one or more energy levels in the one or more subchannels.
    Type: Application
    Filed: May 6, 2019
    Publication date: August 22, 2019
    Inventors: Liwen CHU, Lei Wang, Jinjing Jiang, Yakun Sun, Hongyuan Zhang, Hui-Ling Lou