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: 20220383887
    Abstract: Systems and methods are provided for generating and operating a speech enhancement model optimized for generating noise-suppressed speech outputs for improved human listening and live captioning. A computing system obtains a speech enhancement model trained on a first training dataset to generate noise-suppressed speech outputs and an automatic speech recognition model trained on a second training dataset to generate transcription labels for spoken language utterances. A third training dataset comprising a set of spoken language utterances is applied to the speech enhancement model to obtain a first noise-suppressed speech output which is applied to the automatic speech recognition model to generate a noise-suppressed transcription output for the set of spoken language utterances.
    Type: Application
    Filed: May 26, 2021
    Publication date: December 1, 2022
    Inventors: Xiaofei WANG, Sefik Emre ESKIMEZ, Min TANG, Hemin YANG, Zirun ZHU, Zhuo CHEN, Huaming WANG, Takuya YOSHIOKA
  • Patent number: 11516856
    Abstract: A method and apparatus for communication in a network of WLAN overlapping basic service set (OBSS) are disclosed. A station or an access point may indicate its interference reporting and inter-BSS coordination capabilities in a message. At least one of quality of service (QoS) settings, transmission opportunity (TXOP), restricted access window (RAW) or beacon subinterval schedules, or traffic indication map (TIM) or uplink access window assignment may be coordinated. The station may receive a request for interference measurements on the basic service set (BSS) of the station or neighboring BSSs that the station can overhear. The station may transmit an interference measurement report to an access point. The coordination may be performed based on the interference measurement report. Furthermore, STAs may transmit channel or sector preferences to APs and receive channel or sector assignments.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: November 29, 2022
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Guodong Zhang
  • Patent number: 11516701
    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: April 21, 2020
    Date of Patent: November 29, 2022
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei Wang, Lei Wang, Sudheer A. Grandhi, Guodong Zhang
  • Patent number: 11503613
    Abstract: Methods and apparatus for interference discovery for full-duplex data transmission are provided. In an embodiment, a station (STA) receives a full-duplex request message from an access point (AP). The STA transmits a first full-duplex response message to the AP. The STA listens for a second full-duplex response message transmitted from a second STA to the AP. The STA determines a received power of the second full-duplex response message from the second STA to the AP. The STA receives a first trigger message from the AP. The first trigger message includes information to perform full-duplex data transmission. The STA transmits data to the AP in response to the first trigger message. The STA transmits interference information to the AP. The interference information is based on the determined received power.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: November 15, 2022
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Hanging Lou, Alphan Sahin, Oghenekome Oteri, Li-Hsiang Sun, Xiaofei Wang, Rui Yang
  • Publication number: 20220353821
    Abstract: Methods and apparatuses are described herein for network discovery. A wireless transmit/receive unit (WTRU) may transmit, to a first access point (AP), via a Primary Connectivity Radio (PCR), a request indicating that on a condition that the WTRU is disassociated from the first AP, the WTRU will enter a wake-up radio (WUR) only discovery mode. The WTRU may receive, from the first AP, via the PCR, a management frame that has WUR discovery elements including an indication of at least one channel used by a second AP. The WTRU may perform disassociation from the first AP. The WTRU may activate a WUR and deactivate the PCR. On a condition that the WTRU is disassociated from the first AP, the WTRU may receive, from the second AP, via the WUR, a WUR frame over the at least one channel to enable the WTRU to activate the PCR to initiate association.
    Type: Application
    Filed: July 19, 2022
    Publication date: November 3, 2022
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei WANG, Li-Hsiang Sun, Hanqing Lou, Oghenekome Oteri, Joseph S. Levy, Rui Yang, Alphan Sahin
  • Publication number: 20220339857
    Abstract: A 3D printing device (100), comprising a melt extrusion module (102), a printing module (103), and a platform module (104). The melt extrusion module (102) comprises a processing chamber (121) consisting of a feed inlet (124) and a discharge outlet (125), as well as an extrusion means (122) and a heating means (123) disposed at the processing chamber; the melt extrusion module (102) is configured to receive an initial material from the feed inlet (124) of the processing chamber (121), and heat and extrude the initial material to convert the initial material into a molten body, which is extruded out of the discharge outlet (125) of the processing chamber (121). The printing module (103) is communicated with the discharge outlet (125) of the processing chamber (121) and is provided with a nozzle (131); the printing module (103) is configured to receive the molten body extruded from the discharge outlet (125) of the processing chamber (121) and guide the molten body to be extruded out of the nozzle (131).
    Type: Application
    Filed: May 24, 2022
    Publication date: October 27, 2022
    Inventors: Senping CHENG, Xiaoling LI, Feihuang DENG, Haohui LU, Haili LIU, Juan YAO, Xiaofei WANG, Wei WU
  • Publication number: 20220330344
    Abstract: Methods and system may be used for collision detection for orthogonal frequency division multiple access (OFDMA)-based random access. A wireless transmit/receive unit (WTRU) may receive, from an access point (AP), a first trigger frame triggering random access using OFDMA. The WTRU may transmit, to the AP, in response to the first trigger frame a trigger-based frame including user specific control information in a signal (SIG) field. The WTRU may receive an acknowledgment/negative acknowledgment (ACK/NAK) message indicating that the trigger-based frame was successfully detected at the AP or that the trigger-based frame was not successfully detected at the AP. The WTRU receive, from the AP, a scheduling retransmission frame including rescheduling information for STAs with corrupted UL transmissions.
    Type: Application
    Filed: May 4, 2020
    Publication date: October 13, 2022
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Hanqing Lou, Alphan Sahin, Li Hsiang Sun, Xiaofei Wang, Rui Yang, Frank La Sita
  • Publication number: 20220306622
    Abstract: Disclosed are a salt and a crystal form of an mTORC1/2 dual kinase inhibitor and a preparation method therefor. Also disclosed is use of the salt and crystal form in the preparation of a medicament related to the mTORC1/2 dual kinase inhibitor.
    Type: Application
    Filed: May 6, 2020
    Publication date: September 29, 2022
    Inventors: Kevin X CHEN, Zhaoguo CHEN, Li ZHANG, Yanxin YU, Kai ZHOU, Fen JIANG, Shanghua XIA, Xiaofei WANG
  • Patent number: 11456784
    Abstract: An AP/PCP may perform user selection/pairing/grouping based on a measurement of an analog transmission (e.g., signal to noise ratio (SNR) or signal to interference plus noise ratio (SINR)). The SNRs may be used, for example by the station, to determine best beams and/or beam pairs and/or worst beams and/or beam pairs. A station may feed back the best few beams and/or beam pairs for a Tx and Rx virtual antenna pair. A station may feed back the worst few beams for the Tx and Rx virtual antenna pair. The AP/PCP may receive the indication(s) and/or use the indication(s) to group the stations.
    Type: Grant
    Filed: May 18, 2021
    Date of Patent: September 27, 2022
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Hanging Lou, Alphan Sahin, Xiaofei Wang, Rui Yang, Oghenekome Oteri, Li-Hsiang Sun
  • Publication number: 20220303890
    Abstract: A method for beacon information provisioning, transmissions and protocol enhancements includes defining multiple level beacons based on the attributes of beacon information fields/elements. A short beacon may be used in addition to a primary beacon in space-time block code (STBC) modes, non-STBC modes and in multiple bandwidth modes. The short beacons may also be used for Fast Initial Link Setup (FILS) and to extend system coverage range. Beacon transmissions may use adaptive modulation and coding set/scheme (MCS).
    Type: Application
    Filed: June 7, 2022
    Publication date: September 22, 2022
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Sudheer A. Grandhi, Lei Wang, Guodong Zhang, Xiaofei Wang, Monisha Ghosh, Hanqing Lou
  • Publication number: 20220294722
    Abstract: An ingress device determines a service packet belonging to a target service flow, obtains transmission quality information based on a detection packet, and reports a flow identifier and the transmission quality information to a controller. The controller determines transmission quality of the target service flow based on the flow identifier and the transmission quality information. The detection packet is at least one service packet belonging to the target service flow, and meets any one or a combination of a plurality of the following conditions: the service packet is transmitted through a target transmission network, the service packet is transmitted on a target transmission path, the service packet is received through a target port of the ingress device, the service packet is transmitted through an egress device, and the service packet has a target priority.
    Type: Application
    Filed: May 31, 2022
    Publication date: September 15, 2022
    Inventors: Weidong Li, Fang Xin, Xiaofei Wang, Jie Zhang
  • Publication number: 20220287122
    Abstract: As disclosed herein, there may be systems, methods, and devices for enabling multi-link wireless local area networks (WLAN). One or more non-AP station (STA) multi-link devices (MLDs) and one or more Access Point (AP) MLD may establish a multi-link association between each other, thereby establishing a multi-link connection that enables improved and more efficient wireless communication.
    Type: Application
    Filed: July 13, 2020
    Publication date: September 8, 2022
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei Wang, Hanqing Lou, Li-Hsiang Sun, Joseph S. Levy
  • Patent number: 11438839
    Abstract: Methods, systems, and apparatuses are disclosed for operating a wireless transmit/receive unit (WTRU) in a wake-up radio (WUR) state and receiving a (WUR) frame from an access point (AP). A WUR frame may include a multicast counter (MC) field. A determination may be made whether a received MC value in a received MC field is a same value as a stored MC value. Where a received MC value is the same value as a stored MC value, the WTRU may operate in the WUR state. Where a received MC value is not the same value as a stored MC value, the WTRU may operate in a primary connectivity radio (PCR) state.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: September 6, 2022
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Hanqing Lou, Alphan Sahin, Xiaofei Wang, Oghenekome Oteri, Li Hsiang Sun, Rui Yang
  • Patent number: 11432300
    Abstract: A station (STA) may include an antenna and a processor operatively coupled to the antenna. The processor and the antenna may be configured to send, to an access point (AP), a first message including an indication of one or more secondary channels in an operating band. The operating band may include a primary channel and the one or more secondary channels. The processor and the antenna may be further configured to receive, from the AP, a second message including an indication of a channel of the one or more secondary channels to use in a scheduled transmission period.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: August 30, 2022
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Guodong Zhang
  • Publication number: 20220264548
    Abstract: A method, apparatus, and system for beamforming training using a wireless transmit receive unit (WTRU). A WTRU may receive an indication of a number of space time slots (STSs) from an access point (AP) within a beacon frame during a beamforming training allocation. The WTRU may send a response signal to the AP in a specific STS based on a function of the number of STSs. The WTRU may receive an acknowledgement (ACK) from the AP confirming the response was received. Alternatively, the AP may send a signal indicating that a collision occurred and alter the number of STSs, and the WTRU may try again in the next beamforming training allocation.
    Type: Application
    Filed: May 6, 2022
    Publication date: August 18, 2022
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Hanqing Lou, Xiaofei Wang, Li-Hsiang Sun, Rui Yang
  • Patent number: 11418553
    Abstract: The present disclosure relates to a video connection method and apparatus. The method includes: obtaining matched video connection requests from a plurality of video connection requests; creating a video connection room for the matched video connection requests; generating identification information of the video connection room; and informing a first client and a second client of entering the video connection room and making a video connection by sending the identification information of the video connection room to the first client and the second client corresponding to the matched video connection requests respectively.
    Type: Grant
    Filed: July 29, 2021
    Date of Patent: August 16, 2022
    Assignee: Beijing Dajia Internet Information Technology Co., Ltd.
    Inventors: Pengfei Pan, Shuifeng Lin, Haizhao Xu, Meikai Qu, Zechen Zhou, Miao Liu, Xiaofei Wang
  • Publication number: 20220255612
    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: Application
    Filed: April 27, 2022
    Publication date: August 11, 2022
    Inventors: Hanqing Lou, Xiaofei Wang, Oghenekome Oteri
  • Publication number: 20220255693
    Abstract: Methods and apparatuses are described herein for feedback based midamble adaptation. For example, a first station (STA) may transmit, to a second STA, a request frame that includes an indicator indicating a request for midamble information. The first STA may receive, from the second STA, a response frame that includes the midamble information determined by the second STA based on one or more channel measurements associated with the second STA. The midamble information may include a midamble report, a Doppler measurement report, or the like. The midamble report or the Doppler measurement report may include at least one of a midamble periodicity, a mobility/Doppler level, or the like. Based on the midamble information, the first STA may generate a physical layer convergence procedure (PLCP) protocol data unit (PPDU) that includes at least one midamble within a data portion of the PPDU.
    Type: Application
    Filed: July 10, 2020
    Publication date: August 11, 2022
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Hanqing Lou, Li-Hsiang Sun, Rui Yang, Joseph S. Levy, Xiaofei Wang
  • Publication number: 20220244974
    Abstract: Calls run through a virtual desktop infrastructure server are enhanced by testing communication network conditions and selecting, based on the test results, a media channel from a set of supported media channels, including a media channel that is routed through the virtual desktop infrastructure server and encapsulated in a protocol for exchanging data for virtual desktop applications and a more direct media channel that uses a network socket pair between a media server and a personal computing device and bypasses the virtual desktop infrastructure server. In some implementations, call data of multiple types and/or from multiple sources are merged into a single virtual channel of the protocol for exchanging data for virtual desktop applications.
    Type: Application
    Filed: March 3, 2021
    Publication date: August 4, 2022
    Inventors: Xingzhi Luo, Xiaofei Wang, Haibing Xu, Daoquan Ye
  • Publication number: 20220248457
    Abstract: Methods, devices and systems are provided for performing for multi-user (MU) transmission. A wireless transmit/receive unit (WTRU) may be configured to receive a frame, decode the received frame and determine whether the received frame is a null data packet (NDP) multi-user (MU) media access control (MAC) physical layer convergence protocol (PLCP) protocol data unit (PPDU) (NDP MU MAC PPDU) based on meeting an NDP condition. The NDP MU MAC PPDU may correspond to an MU transmission and may include a PLCP header which includes an NDP signal (SIG) field having MU control information. Based on the received frame meeting the NDP condition, the WTRU may be further configured to process the NDP SIG field, generate a response based on the NDP SIG field and the MU control information, and transmit the response.
    Type: Application
    Filed: April 25, 2022
    Publication date: August 4, 2022
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Hanqing Lou, Guodong Zhang, Robert L. Olesen, Xiaofei Wang