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: 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
  • Publication number: 20220275611
    Abstract: The present disclosure discloses a water outlet device comprising an inlet passage, a first outlet passage, a second outlet passage, a third outlet passage, a first valve chamber, a second valve chamber, a first sealing member, a second sealing member, and a first resetting member. When the second sealing member is controlled to move and to be changed from blocking the second outlet passage to blocking the third outlet passage, the first sealing member is correspondingly changed from blocking the second valve chamber to blocking the first outlet passage, and the first sealing member continues blocking the first outlet passage due to water pressure. When the inlet passage is blocked, the first sealing member is biased by the first resetting member to move to block the second valve chamber.
    Type: Application
    Filed: June 28, 2021
    Publication date: September 1, 2022
    Inventors: Xuedong WANG, Xiaofei GUO, Chuanbao ZHU
  • 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: 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
  • 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
  • Patent number: 11395335
    Abstract: A wireless transmit/receive unit (WTRU) may perform listen before talk (LBT) on a channel prior to uplink transmission on the channel. The WTRU may adjust an amount of time that the WTRU performs LBT. For example, WTRU may receive a set of transmission opportunities. The WTRU may receive a contention window size (CWS) sequence including a CWS for each transmission opportunity. The CWS sequence may be unique and may be based on the identity of the WTRU. For a given transmission opportunity, the WTRU may select a random number between zero and the CWS for that transmission opportunity. If the channel is clear for at least an amount of time associated with the random number, the WTRU may transmit in the transmission opportunity. If the channel is not clear for at least an amount of time associated with the random number, the WTRU may not transmit in the transmission opportunity.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: July 19, 2022
    Assignee: IDAC Holdings, Inc.
    Inventors: Hanqing Lou, Oghenekome Oteri, Xiaofei Wang, Ahmad Reza Hedayat, Alphan Sahin, Rui Yang, Kyle Jung-Lin Pan
  • Patent number: 11395231
    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: Grant
    Filed: March 4, 2019
    Date of Patent: July 19, 2022
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Li-Hsiang Sun, Hanqing Lou, Oghenekome Oteri, Joseph S. Levy, Rui Yang, Alphan Sahin
  • Publication number: 20220225323
    Abstract: Techniques, devices and systems are disclosed for generating a resource request poll comprising at least one response criteria, transmitting the resource request poll, receiving a resource request report from STAs that meet at least one response criteria. A trigger frame may be transmitted to the at least one STA based on the resource request report from the at least one STA. The response criteria may include at least one of a NFRP, a UL access type, a delay bound, an NDP feedback report AC, a number of indicated AID bits, an AID range, an information requested, a number of bits to be included in NDP feedback report or preamble, number of LTFs to be included in the NDP feedback report or preamble, and a number of bits to be included in NDP feedback report or preamble per LTF or per N LTF symbol.
    Type: Application
    Filed: May 1, 2020
    Publication date: July 14, 2022
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei Wang, Hanqing Lou, Alphan Sahin, Li-Hsiang Sun, Joseph S. Levy, Rui Yang
  • Patent number: 11387551
    Abstract: The present invention discloses a triple-resonant null frequency scanning antenna, which belongs to the technical fields of the Internet of Things and microwave. The triple-resonant null frequency scanning antenna comprises a circular sector magnetic dipole arranged on a medium substrate, and rectangular notches are symmetrically arranged on a sector patch of the circular sector magnetic dipole. The circular sector magnetic dipole is fixed on the medium substrate by a second shorting pin and third shorting pins, an flared angle of the circular sector magnetic dipole is a first central angle, and two third shorting pins are present and are symmetrically arranged on both sides of the angular bisector of the first central angle.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: July 12, 2022
    Assignee: NANJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS
    Inventors: Wenjun Lv, Sijie Li, Yun Shao, Jianyuan Wang, Han Wu, Zhibin Zhao, Zhifang Wu, Xiaohui Li, Hongbo Zhu, Xiaofei Li
  • Publication number: 20220217770
    Abstract: Methods and apparatuses for enhancing random access procedures are described herein. A method performed by an access point (AP) may comprise allocating a plurality of random access (RA) resource units (RA-RUs) for transmitting a message from a station (STA) to the AP over an upper or lower frequency band. The method may comprise transmitting, to a station (STA), one or more physical layer convergence procedure (PLCP) protocol data unit (PPDU) over the upper or lower frequency bands. Each of the one or more PPDUs may include a trigger frame, and the trigger frame may include an indication of the plurality of RA-RUs and a target received signal strength indicator (TRSSI) associated with at least one of the upper or lower frequency bands. The method may comprise receiving, in response to the trigger frame, the message from the STA in one of the plurality of RA-RUs.
    Type: Application
    Filed: May 8, 2020
    Publication date: July 7, 2022
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Li Hsiang Sun, Hanqing Lou, Alphan Sahin, Xiaofei Wang, Rui Yang, Frank La Sita
  • Publication number: 20220216898
    Abstract: Systems, methods, and devices for beamforming (BF) training are disclosed. In some examples, a receiver is configured to receive sector sweep (SSW) training frames from an initiator device that each indicate an antenna sector of the initiator device. A transmitter is configured to transmit sector sweep (SSW) training frames to the initiator device that indicate a best received antenna sector of the initiator device. The receiver receives a sector sweep feedback (SSW FB) frame from the initiator device, and the transmitter transmits transmit a sector sweep acknowledgement (SSW ACK) frame to the initiator device that indicates an antenna sector of the initiator device that is different from the antenna sector indicated by the SSW FB frame, if the SSW FB frame was best received by an antenna not corresponding to the best received antenna sector of the initiator device.
    Type: Application
    Filed: March 21, 2022
    Publication date: July 7, 2022
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Hanqing Lou, Li Hsiang Sun, Oghenekome Oteri, Xiaofei Wang, Rui Yang