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: 20240430802
    Abstract: Methods for transmitting and receiving enhanced broadcast transmissions are provided herein. A method performed by a receiving station (STA) may include receiving, from a transmitting STA, a frame including a broadcast service element The broadcast service element includes one or more fields associated with enhanced broadcast service (eBCS) traffic streams that may be provided by the STA. At least one of the fields comprises an identifier associated with eBCS traffic streams, a field indicating whether negotiation with the transmitting STA is required to receive data of the eBCS traffic streams, and scheduling information for receiving a broadcast transmission including the data of the eBCS traffic streams. The method includes receiving, based on the scheduling information, the broadcast transmission including the identifier associated with the eBCS traffic streams and data of the eBCS traffic streams.
    Type: Application
    Filed: September 3, 2024
    Publication date: December 26, 2024
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Oghenekome Oteri, Joseph S. Levy, Hanqing Lou, Li-Hsiang Sun
  • Patent number: 12170631
    Abstract: A method performed by a STA may comprise transmitting a first negotiation message to an AP and receiving a second negotiation message from the AP. The first negotiation message and the second negotiation message may negotiate a block acknowledgement agreement. The method may further comprise receiving a data unit, from the AP, the data unit having a duration field indicating a duration of a block-ACK frame. The duration of the block-ACK frame may be determined based on the negotiated block ACK agreement. A block-ACK frame may be transmitted within the duration indicated by the duration field.
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: December 17, 2024
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Hanging Lou, Monisha Ghosh, Sudheer A. Grandhi
  • Publication number: 20240414755
    Abstract: Methods and apparatuses for enhancing random access procedures are described herein. A method performed by a station (STA) may include receiving, from an access point (AP), a physical layer convergence procedure (PLCP) protocol data unit (PPDU) in one of an upper frequency band or a lower frequency band. The PPDU may include a trigger frame. The trigger frame may include information indicating an allocation of a plurality of random access (RA) resource units (RA-RUs). Each of the RA-RUs may be associated with one of the upper frequency band or the lower frequency band. The method may include selecting one of the plurality of allocated RA-RUs and transmitting, to the AP, a message using the selected RA-RU.
    Type: Application
    Filed: August 20, 2024
    Publication date: December 12, 2024
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Li-Hsiang Sun, Hanqing Lou, Alphan Sahin, Xiaofei Wang, Rui Yang, Frank La Sita
  • Publication number: 20240414043
    Abstract: Methods and apparatuses for coexistence of signaling of different 802.11 protocols are provided herein. A station (STA) or access point (AP) may transmit a protocol data unit (PDU) of a first 802.11 protocol and a PDU of a second 802.11 protocol. The transmission of the PDU of the first 802.11 protocol and the transmission of the PDU of the second 802.11 protocol may be at least quasi-orthogonal.
    Type: Application
    Filed: August 22, 2024
    Publication date: December 12, 2024
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Alphan Sahin, Oghenekome Oteri, Hanqing Lou, Xiaofei Wang, Li-Hsiang Sun, Rui Yang, Frank La Sita
  • Patent number: 12155489
    Abstract: A method performed by a station (STA) for operating in a wireless local area network (WLAN) is provided. The method includes communicating, in an operation mode, with devices in the WLAN including another STA and transmitting, to the another STA, one or more of a data frame or a management frame including a medium access control (MAC) header. The MAC header includes an operation mode field indicating a change in one or more parameters of the operation mode. The method includes transmitting or receiving, based on a determination that the indicated change in the one or more parameters of the operation mode has taken effect, a frame to or from the another STA in accordance with the indicated change in the one or more parameters of the operation mode.
    Type: Grant
    Filed: June 30, 2023
    Date of Patent: November 26, 2024
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Guodong Zhang, Joseph S. Levy
  • Patent number: 12156264
    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: November 28, 2022
    Date of Patent: November 26, 2024
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Guodong Zhang
  • Patent number: 12156253
    Abstract: A STA may comprise a receiver configured to receive, from an AP, a first polling frame addressed to a broadcast address and sent to a plurality of STAs. The first polling frame may indicate a plurality of sub-channels. The STA may further comprise a transmitter configured to transmit, to the AP, a first PPDU indicating SNR information, on one or more sub-channels of the plurality of sub-channels, a SIFS after the first polling frame is received. The transmitter may be configured to transmit the first PPDU while a second PPDU is transmitted to the AP by another STA of the plurality of STAs, wherein the second PPDU is transmitted on one or more other sub-channels of the plurality of sub-channels.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: November 26, 2024
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Hanqing Lou, Xiaofei Wang, Oghenekome Oteri, Robert L. Olesen
  • Publication number: 20240387948
    Abstract: A separator for a lithium-sulfur battery, a method for preparing the same and a lithium-sulfur battery containing the same are provided. The separator includes a polymeric substrate film and a composite layer on one surface of the polymeric substrate film. The composite layer has a SCM molecular sieve and a conductive carbon material. The SCM molecular sieve is selected from SCM-14 and SCM-15. The SCM molecular sieve further contains cobalt. The separator in accordance can effectively suppress the shuttle of polysulfides in lithium-sulfur batteries, and thereby reduce side reactions within the batteries, lower the self-discharge rate of lithium-sulfur batteries, and improve the cycling performances, rate performances, and storage life of the batteries.
    Type: Application
    Filed: September 28, 2022
    Publication date: November 21, 2024
    Inventors: Weimin YANG, Jun LI, Zhendong WANG, Xiaofei WANG, Dawei LAN, Daoming ZHANG, Haoliang XUE, Sifei ZHOU
  • Publication number: 20240381465
    Abstract: A method performed by a multi-multi-link device (MMLD) architecture comprising a plurality of access points (APs) may comprise transmitting a frame, by an AP of the MMLD, wherein the frame may include a multi-multi-link device (MMLD) frame element which indicates that the AP is part of a multi-link device (MLD) that is a MMLD. The frame may comprise a beacon, short beacon, probe response, fast initial link setup (FILS) discovery frame, association response frame, or the like, or any appropriate combination thereof. The MMLD element may comprise one or more of an element identifier, length, MMLD identifier, MMLD media access control (MAC) address, partial reporting field, number of reported MLDs field and/or an MLD info field. The MLD may communicate with other MLDs of the multiple MLDs during a transmit wake time (TWT) service period (SP). The MLD may be in a doze state during non-TWT SPs.
    Type: Application
    Filed: October 6, 2022
    Publication date: November 14, 2024
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Hanqing Lou, Zinan Lin, Joseph Levy
  • Publication number: 20240365393
    Abstract: Systems, methods, and instrumentalities are disclosed for concurrent link setup and downlink data retrieval, e.g., for high efficiency WLAN. An access point (AP) may send a trigger element that allocates a resource for pre-association transmissions with the AP. The trigger element may allocate the resource for random access and/or deterministic access. The AP may receive, from an unassociated STA, a first frame via one or more resource units (RUs) allocated in the trigger element. The AP may determine a pre-association identifier (PID) that identifies the unassociated STA. The AP may send the PID to the unassociated STA, for example, in the trigger element or in the multi-STA ACK. The AP may send a second frame associated with a multi-user (MU) transmission that includes the PID. The AP may send a trigger frame that includes the PID.
    Type: Application
    Filed: July 3, 2024
    Publication date: October 31, 2024
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei WANG, Hanqing LOU, Guodong ZHANG
  • Publication number: 20240364397
    Abstract: A station (STA) may receive a first wireless signal including a preamble of a packet from a first access point (AP). An energy level of the signal received may exceed a clear channel assessment (CCA) threshold. The STA may issue a primitive to stop reception of the packet. Further, the STA may return to a receive state based on the primitive. Additionally, the STA may determine, using a carrier sense multiple access (CSMA) protocol, to ignore a payload portion of the packet based on information contained in the preamble and adjust the CCA threshold to account for the payload portion of the packet. The STA may then access a wireless medium using the CSMA protocol during the payload portion of the packet using the adjusted CCA threshold. Using the adjusted CCA threshold, the STA may receive a second wireless signal from a second AP.
    Type: Application
    Filed: July 3, 2024
    Publication date: October 31, 2024
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Guodong Zhang, Hanqing Lou, Xiaofei Wang
  • Publication number: 20240356817
    Abstract: A federated learning (FL) and/or a distributed machine learning (ML) model sharing process may be implemented in a wireless network. An access point (AP), station (STA), or the like may provide a FL announcement message indicating that a FL or ML process is in being utilized. A STA receiving the announcement message may provide a FL/ML support frame indicating its participation in FL model sharing. The STA may comprise a local FL model executable on the STA. The STA may update its local FL model based on information in the FL announcement message. The STA may update its local FL model based on information received from other STAs in the network. The FL announcement message may comprise a schedule, and the STA may be configured to train its local FL model in accordance with the schedule. The sharing model process may be implemented in a wireless local area network.
    Type: Application
    Filed: October 4, 2022
    Publication date: October 24, 2024
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Zinan Lin, Hanqing Lou, Mahmoud Saad, Rui Yang
  • Publication number: 20240349190
    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: June 3, 2024
    Publication date: October 17, 2024
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei Wang, Li-Hsiang Sun, Hanqing Lou, Oghenekome Oteri, Joseph Levy, Rui Yang, Alphan Sahin
  • Publication number: 20240349398
    Abstract: Disclosed herein are apparatus and methods for enhancing broadcast services in wireless local area networks (WLAN). Embodiments provide systems, apparatus and methods that ensure a mobile transceiver (STA) receiving a broadcast stream, receives the stream in a continuous and seamless manner as the STA moves from an area covered by a first AP into an area covered by a second AP. Further embodiments provide systems, apparatus and methods by which an Access Point acquires channel sounding information from one or more sensor devices comprising transceiver stations (STA) to provide enhanced broadcast channel condition services to STA operating within the AP coverage area.
    Type: Application
    Filed: August 18, 2022
    Publication date: October 17, 2024
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei Wang, Hanqing Lou, Rui Yang
  • Publication number: 20240349185
    Abstract: An access point (AP) that supports the IEEE 802.11ba protocol may transmit a frame including a physical layer (PHY) preamble to one or more stations (STAs) over a channel. The PHY preamble may include a plurality of repeated modulated legacy signal (L-SIG) fields to spoof a recipient of the frame and protect a wake up signal (WUS) to be subsequently transmitted by the AP. The AP may transmit the WUS to at least a first STA of the one or more STAs, wherein the at least the first STA is a IEEE 802.11ba compliant STA.
    Type: Application
    Filed: June 28, 2024
    Publication date: October 17, 2024
    Applicant: Interdigital Patent Holdings, INC.
    Inventors: Alphan Sahin, Rui Yang, Frank La Sita, Hanqing Lou, Xiaofei Wang, Li Hsiang Sun
  • Publication number: 20240346077
    Abstract: Aspects described herein may relate to methods, systems, and apparatuses that determine one or more categories associated with a dataset, or a portion thereof. The determination may be performed based on one or more tags associated with the dataset and/or a description associated with the dataset. Further, the determination may be performed by searching an ontology based on the one or more tags and/or the description. The determination may be performed by using a machine-learning model based on the one or more tags and/or the description. Once the one or more categories associated with the dataset are determined, the one or more categories may be used as a basis for modifying the dataset and/or validating the dataset.
    Type: Application
    Filed: June 25, 2024
    Publication date: October 17, 2024
    Inventors: Kai-Wen Chen, Brian Donohue, Xuemei Pan, Nirmal Kumar Raajan, Bethany Sehon, Naresh Singh, Xiaofei Wang, Albert T. Zellers, Weidan Zhou
  • Patent number: 12120742
    Abstract: Methods, systems, and devices for channel access and listen-before-talk approaches for new radio operation in unlicensed bands and/or licensed bands. A gNB and a wireless transmit/receive unit (WTRU) may operate in unlicensed spectrum. The gNB may perform listen-before-talk operation, and when successful, may send a downlink control channel with a slot format indication (SFI) to the WTRU. There may also be a handshaking procedure with an exchange of a request to transmit (RTT) and a request to receive (RTR). Prior to receiving the downlink channel, the WTRU may monitor search spaces at a first level, and once the downlink channel is received the WTRU may monitor search spaces at a second level. At the end of transmission, the WTRU may revert back to monitoring search spaces at the first level. In one example, the first level may be a mini-slot level and the second level may be a slot level.
    Type: Grant
    Filed: January 3, 2023
    Date of Patent: October 15, 2024
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Ahmad Reza Hedayat, Oghenekome Oteri, Hanqing Lou, Mahmoud Taherzadeh Boroujeni, Xiaofei Wang, Rui Yang, Shahrokh Nayeb Nazar
  • Patent number: 12112490
    Abstract: Disclosed are apparatus, electronic device, and method for stitching dual-camera images. The method includes collecting two images having overlapping photographic content. The method includes extracting and matching feature points of the two images. The method includes roughly aligning the two images by using a homography matrix. The method includes accurately aligning the two images by using a least squares method to complete stitching the two images.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: October 8, 2024
    Assignees: State Grid Zhejiang Electric Power Co., Ltd. Taizhou Power Supply Company, Taizhou Economic Development Zone Transportation Inspection Branch of Taizhou Hongda Electric Power Construction Co., Ltd.
    Inventors: Jiandong Si, Jian Yang, Chen Zhou, Jianhua Lv, Guode Ying, Qian Yu, Qian Zhang, Huang Zhang, Huanghao Ying, Xiaofei Wang, Xi Yang, Weizhong Chen, Dongqi Lu, Ge Zhou, Jieli Bao, Huiyong Qiu
  • Publication number: 20240323653
    Abstract: A method for use in a non-access point (AP) multi-link device (MLD), and a non-AP MLD are disclosed. In the method, the non-AP MLD transmits, by a first station (STA) affiliated with the non-AP MLD to a first access point (AP) affiliated with an AP MLD, on a first link, a request for AP assistance, including information regarding a second link for which assistance data is requested. Then, the non-AP MLD receives, by a second STA affiliated with the non-AP MLD from a second AP affiliated with the AP MLD, on the second link, a trigger frame.
    Type: Application
    Filed: May 31, 2024
    Publication date: September 26, 2024
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei Wang, Hanqing Lou, Li Hsiang Sun, Joseph Levy
  • Publication number: 20240322962
    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: June 3, 2024
    Publication date: September 26, 2024
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Hanqing Lou, Li-Hsiang Sun, Rui Yang, Joseph S. Levy, Xiaofei Wang