Patents by Inventor Xiaofei Wang

Xiaofei 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).

  • Publication number: 20200178324
    Abstract: A method performed by an AP may comprise initializing a CCC and increasing the CCC upon a change of at least one of a plurality of parameters of the AP. The plurality of parameters may include at least a high throughput (HT) Operation element, one or more Enhanced Distributed Channel Access (EDCA) parameters, or one or more operational mode parameters. The method may further comprise transmitting a frame, to at least one STA, wherein the frame includes an indication of the CCC, and the frame indicates that the at least one STA return from a power saving mode.
    Type: Application
    Filed: February 6, 2020
    Publication date: June 4, 2020
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Lei Wang, Yousif Targali, Sudheer A. Grandhi, Xiaofei Wang, Guodong Zhang
  • Publication number: 20200178171
    Abstract: Procedures and mechanisms for narrowband multi-channel transmission for wakeup radio (WUR) operation are disclosed. A station (STA) operating in WUR mode may have its a primary connectivity radio (PCR) turned off and its WUR turned and operating according to previously negotiated WUR operating parameters. The STA may monitor, for WUR beacons and frames over a first WUR channel, and determine that the first WUR channel does not support reliable transmission based on no beacons being received within a first duration. The STA may turn off the WUR, and turn on the PCR to send a first short WUR frame including a wakeup reason, and receive a second short WUR frame with a WUR channel assignment. The STA may turn off the PCR, turn on the WUR, and monitor for WUR signals on a second WUR channel according to the WUR channel assignment and the previously negotiated WUR operating parameters.
    Type: Application
    Filed: May 7, 2018
    Publication date: June 4, 2020
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Hanqing Lou, Xiaofei Wang, Oghenekome Oteri, Alphan Sahin, Li-Hsiang Sun, Rui Yang
  • Patent number: 10667169
    Abstract: A method for receiving a backoff value at a wireless station is presented. A traffic indication map is received at the station, wherein a backoff number is implicitly assigned to the station based on a position of the station within the traffic indication map. The backoff value is determined by multiplying the backoff number by a predetermined time value.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: May 26, 2020
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei Wang, Lei Wang, Sudheer A. Grandhi, Guodong Zhang
  • Patent number: 10665151
    Abstract: A driver circuit carrier, a display panel, and a manufacturing method are provided. The driver circuit carrier includes a substrate, and a number of first pins arranged on at least one surface of the substrate. The first pins are arranged along a first reference line. An imaginary extending line of at least one of the first pins intersects with a second reference line perpendicular to the first reference line.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: May 26, 2020
    Assignees: KUNSHAN NEW FLAT PANEL DISPLAY TECHNOLOGY CENTER CO., LTD., KUNSHAN GO-VISIONOX OPTO-ELECTRONICS CO., LTD.
    Inventors: Xiuyu Zhang, Xiaofei Xue, Tao Xu, Xiangqian Wang, Zhan Sun
  • Publication number: 20200162135
    Abstract: A single input single output (SISO) data transmission may solicit a multiple input multiple output (MIMO) rank adaptation information. A number of transmit chain for transmission may be determined, e.g., by an access point (AP). A physical layer convergence procedure (PLCP) protocol data unit (PPDU) may be transmitted, e.g., to a station (STA). The PPDU may include data and training (TRN) sequences. The number of TRN sequences may be equal to the number of transmit chains. The PPDU may include information associated with the determined number of transmit chains for transmission. Feedback may be received, e.g., from the STA. The feedback may include information that identifies a transmit chain associated with the transmitted TRN sequences and/or a channel measurement associated with the identified transmit chain. A subsequent PPDU may be transmitted based on the channel measurement associated with the identified transmit chain from the received feedback.
    Type: Application
    Filed: May 3, 2018
    Publication date: May 21, 2020
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Li Hsiang Sun, Hanqing Lou, Alphan Sahin, Oghenekome Oteri, Rui Yang, Xiaofei Wang, Frank La Sita
  • Publication number: 20200162302
    Abstract: A wireless transmit/receive unit (WTRU) or access point (AP) may generate a protocol data unit (PDU) of a first 802.11 protocol and a preamble and data of a second 802.11 protocol. The preamble and data of the second 802.11 protocol may be arranged on resources of the PDU of the first 802.11 protocol with shaping sequences for concurrent transmission.
    Type: Application
    Filed: May 4, 2018
    Publication date: May 21, 2020
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Alphan Sahin, Oghenekome Oteri, Hanqing Lou, Xiaofei Wang, Li Hsiang Sun, Rui Yang, Frank La Sita
  • Publication number: 20200163099
    Abstract: Methods and apparatuses are related to multi-user parallel channel access (MU-PCA). For example, a wireless transmit/receive unit (WTRU) is provided that is one of the plurality of WTRUs operable to simultaneously communicate via a plurality of channels managed by an access point (AP). The WTRU includes a receiver configured to receive, from the AP, over at least one channel of the plurality of channels, a group poll (G-Poll) message that includes a resource allocation that indicates at least one allocated channel of the plurality of channels for the WTRU; and a transmitter configured to transmit an uplink request message, to the AP in response to the G-Poll message, over the at least one allocated channel of the plurality of channels, the uplink request message corresponding to uplink data the WTRU has for transmission to the AP.
    Type: Application
    Filed: January 20, 2020
    Publication date: May 21, 2020
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Nirav B. Shah, Guodong Zhang, Ronald Murias
  • Publication number: 20200145853
    Abstract: Devices, methods, and systems for scheduling of an enhanced sector level sweep (SLS). A wireless transmit/receive unit (WTRU) monitors beacon frames transmitted from one or more access points associated with the WTRU. The WTRU receive the beacon frames over multiple transmission sectors during a time interval. The WTRU then compiles the transmission sectors information in a list and ranks the sectors in the list, based on the sectors' characteristics. Then, the WTRU transmits the list over one sector of the list to the one or more access points.
    Type: Application
    Filed: March 9, 2018
    Publication date: May 7, 2020
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Hanqing Lou, Xiaofei Wang, Li-Hsiang Sun, Oghenekome Oteri, Rui Yang
  • Patent number: 10644760
    Abstract: A method and apparatus may be used in multi-AP and multi-wireless transmit/receive unit joint transmissions. The apparatus may be configured to transmit a joint transmission request on a first medium, and receive a joint transmission response on the first medium. In response, the apparatus my perform a joint transmission negotiation on a second medium and transmit data on the second medium based on the joint transmission negotiation. The apparatus may be configured to perform coordinated sectorized or beamformed transmissions through access point (AP)/PCP negotiations. The apparatus may provide an indication of support for joint transmission and coordinated sectorized or beamformed transmissions. The method and apparatus may also implement multi-AP/WTRU request-to-send (RTS)/clear-to-send (CTS) procedures. The apparatus may be configured to perform coordinated sectorized or beamforming grouping.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: May 5, 2020
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Guodong Zhang, Oghenekome Oteri, Pengfei Xia
  • Publication number: 20200131184
    Abstract: Provided are a compound represented by formula (I), an isomer or a pharmaceutically acceptable salt thereof, and an application of the same in preparing a drug for treating a disease related to A2A receptor. The R1, R2, R3, ring A, ring B, n, and m are as defined in the specification.
    Type: Application
    Filed: April 6, 2018
    Publication date: April 30, 2020
    Applicant: MEDSHINE DISCOVERY INC.
    Inventors: KEVIN X CHEN, Yanxin YU, Xinde CHEN, Li ZHANG, Zhaoguo CHEN, Cheng XIE, Xiaofei WANG, Linghui WU, Guoping HU, Jian LI, Shuhui CHEN
  • Publication number: 20200136758
    Abstract: A method and apparatus are disclosed for identifying different types of reception failures of a packet. A station (STA) may receive a packet from a transmitting STA and determine whether it is properly received by performing at least one check of a plurality of checks. The STA may determine that reception of the packet was not properly received due to a reception failure based on the at least one check and may generate a negative acknowledgement signal (NACK) signal including an indication of the reception failure cause to enable the transmitting STA to remediate the reception failure cause. The least one check includes determining whether a frame check sequence (FCS) passes, whether a CSMA wireless medium remains busy immediately after an expected packet transmission time, whether there is a power spike during reception of the signal, or whether there are Short training field (STF) and Long Training Field (MT) correlations.
    Type: Application
    Filed: December 23, 2019
    Publication date: April 30, 2020
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Guodong Zhang, Hanqing Lou, Oghenekome Oteri, Monisha Ghosh, Robert L. Olesen
  • Patent number: 10631252
    Abstract: Methods and apparatuses are described herein for determining a transmit power based on clear channel assessment (CCA) thresholds. A station (STA) associated with a first Basic Service Set (BSS) may receive, from an access point (AP) associated with the first BSS, a clear channel assessment (CCA) value for a group of STAs associated with a second BSS. The CCA value may indicate a minimum CCA threshold for a packet received from the second BSS. The STA may then determine, based on the CCA value, a STA specific CCA parameter and a target CCA parameter. The target CCA parameter may be greater than or equal to the STA specific CCA parameter. Based on the STA specific CCA parameter and the target CCA parameter, the STA may determine a target transmit power control (TPC) parameter of the STA, wherein the sum of target TPC parameter and target CCA parameter is constant.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: April 21, 2020
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Pengfei Xia, Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Robert L Olesen, Nirav B. Shah, Frank La Sita
  • Publication number: 20200119859
    Abstract: Systems, methods, and instrumentalities are provided to implement a method of communicating a feedback in a wireless local area network (WLAN). A WLAN device may receive a data frame with a hybrid automatic repeat request (HARQ) data indicator in a frame header. The WLAN device may send an acknowledgement frame when the data frame is correctly received and decoded. The WLAN device may send a negative acknowledgement frame when the data frame is not correctly received and decoded.
    Type: Application
    Filed: December 13, 2019
    Publication date: April 16, 2020
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Guodong Zhang, Robert L. Olesen, Hanqing Lou, Monisha Ghosh, Pengfei Xia, Nirav B. Shah, Oghenekome Oteri
  • Patent number: 10610874
    Abstract: A handheld shower head includes a shower head body, a water inlet assembly and a water outlet assembly mounted on the shower head body. The water inlet assembly includes a water inlet body and a flow control device. The flow control device includes a gasket, a return spring, a control valve shaft, and a control button. The control valve shaft passes through the flow control chamber of the water inlet body. A lower portion of the control valve shaft is connected with the gasket. The control button is connected with an upper portion of the control valve shaft. The handheld shower head can control the flow rate of water discharge and is user-friendly.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: April 7, 2020
    Assignees: XIAMEN LOTA INTERNATIONAL CO., LTD., LOTA XIAMEN INDUSTRY CO., LTD.
    Inventors: Xuedong Wang, Jiangcheng Zhang, Xiaofei Guo, Zheng Chen
  • Patent number: 10608726
    Abstract: Presently disclosed are systems and methods for beamforming training in WLANs. In various embodiments, there are unified MIMO beamforming training procedure, which includes a training period in which an initiator transmits multiple unified training frames for performing a transmit-beamforming training of the initiator and a receive-beamforming training of one or more responders; a feedback period in which each responder replies with a beamforming-feedback response; and an acknowledgement period during which the initiator transmits respective acknowledgement frames to the one or more responders from which responses were received. Rules for restricted random access in various slots of the feedback period may be implemented, to address response contention between multiple qualifying responders.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: March 31, 2020
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Hanqing Lou, Xiaofei Wang, Oghenekome Oteri
  • Patent number: 10588028
    Abstract: A method and apparatus may be used for WiFi sectorization medium access control enhancement (WiSE MAC). An IEEE 802.11 STA may receive an omni-directional indication of a first sectorized transmission opportunity (TXOP) associated with a second STA. The omni-directional indication may include an identifier (ID) of a first sector associated with the first sectorized TXOP. The STA may transmit a directional indication of a second sectorized TXOP a condition that a second sector associated with the second sectorized TXOP does not interfere with the first sector associated with the first sectorized TXOP.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: March 10, 2020
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei Wang, Guodong Zhang
  • Publication number: 20200076568
    Abstract: A wireless communication device may include a reference signal detector configured to detect a first synchronization block in a received signal and to determine a position of the synchronization block within a pattern of synchronization blocks, a controller configured to identify, based on the position, one or more additional synchronization blocks including payloads that are related to a payload of the first synchronization block, a combiner configured to combine the payload of the first synchronization block with the payloads of the one or more additional synchronization blocks to obtain a combined payload, and a decoder configured to decode the combined payload to obtain payload data.
    Type: Application
    Filed: August 31, 2018
    Publication date: March 5, 2020
    Inventors: Hoang Nguyen, Yuanye Wang, Herbert Dawid, Chuxiang Li, Xiaofei Song, Gwang-Hyun Gho
  • Publication number: 20200059342
    Abstract: A wireless transmit/receive unit (WTRU) may be configured to perform wake up radio (WUR) for one or more WUR receivers. For example, the WTRU may transmit a common preamble to a first WUR receiver using a first frequency range. The WTRU may transmit a first WUR packet to the WUR receiver, after the common preamble. The WTRU may transmit the common preamble to a second WUR receiver using a second frequency range. The WTRU may transmit a second WUR packet after the common preamble, The bandwidth associated with the second WUR packet and the bandwidth associated with the first WUR packet may be smaller than the bandwidth associated with the common preamble, which may avoid interference from other transmitters {e.g., 802.11 transmitters, 802.11 stations, and 802.11 radios). The bandwidth associated with the first WUR packet and the bandwidth associated with the second WUR packet may not be coextensive with one another.
    Type: Application
    Filed: April 30, 2018
    Publication date: February 20, 2020
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Alphan Sahin, Oghenekome Oteri, Hanqing Lou, Xiaofei Wang, Li Hsiang Sun, Rui Yang
  • Publication number: 20200056170
    Abstract: Provided is a nucleic acid aptamer screening method based on the localized surface plasmon resonance technology, falling within the fields of molecular recognition and nucleic acid aptamer screening. The method screens out a nucleic acid aptamer that can specifically bind to a target mainly with the aid of a localized surface plasmon resonance personal molecular interaction analyzer. The screening method comprises: taking a nano-gold chip as a medium, fixing the target on the medium, and then carrying out the visualized screening of the nucleic acid aptamer by taking the nucleic acid aptamer as a recognition element. With the aid of the LSPR-SELEX technique, the method does not require any marker during the process of detection by using a solid chip, and maintains the spatial structure and biological activity of the nucleic acid aptamer at the maximum.
    Type: Application
    Filed: December 12, 2016
    Publication date: February 20, 2020
    Inventors: Gaiping ZHANG, Fangyu WANG, Ruiguang DENG, Guangxu XING, Junfang HAO, Xiaofei HU, Qiuying YU, Jing WANG, Yubao ZHI, Dong ZHAO, Xibao SHI, Man TENG
  • Patent number: 10568152
    Abstract: A method performed by a STA may comprise transmitting a first ANQP message to an AP and receiving a second ANQP message in response. The second ANQP message may comprise a CCC value representing a configuration instance of the AP which is incremented by one upon a configuration change. The CCC value may wrap around once a maximum value is reached. The first ANQP message may comprise the CCC value or may comprise another CCC value which is different than the CCC value.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: February 18, 2020
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Lei Wang, Yousif Targali, Sudheer A. Grandhi, Xiaofei Wang, Guodong Zhang