Patents by Inventor Hanqing Lou

Hanqing Lou 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: 11916622
    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: Grant
    Filed: March 21, 2022
    Date of Patent: February 27, 2024
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Hanqing Lou, Li-Hsiang Sun, Oghenekome Oteri, Xiaofei Wang, Rui Yang
  • Publication number: 20240064634
    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: November 3, 2023
    Publication date: February 22, 2024
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Hanqing Lou, Xiaofei J. Wang, Oghenekome Oteri, Alphan Sahin, Li-Hsiang Sun, Rui Yang
  • Publication number: 20240064646
    Abstract: Methods and apparatuses are described herein for rediscovery and medium access for wake-up radios. For example, a wireless transmit receive unit (WTRU) may receive, via a first transceiver, a frame that includes a wake-up radio (WUR) operation element having a first counter value. The WTRU may deactivate the first transceiver and activate a second transceiver, wherein the first transceiver enters into a doze state and the second transceiver is in an awake state. The WTRU may then receive, via the second transceiver in the awake state, a WUR frame that includes a second counter value indicating an update of a plurality of basic server set (BSS) parameters associated with the first transceiver. On a condition that the second counter value is different than the first counter value, the WTRU may activate the first transceiver to update the plurality of BSS parameters, wherein the first transceiver enters into an awake state.
    Type: Application
    Filed: August 29, 2023
    Publication date: February 22, 2024
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei Wang, Hanqing Lou, Joseph S. Levy
  • Patent number: 11909530
    Abstract: A method for use in a wireless transmit/receive unit (WTRU). The method comprises: receiving LRRE information from an AP; determining whether a first condition is satisfied by the WTRU, wherein the first condition is satisfied by the WTRU, on a condition that the first condition is satisfied, sending a mode change request to the AP to change an operation mode to a LRRE HARQ mode; receiving a response regarding the mode change request from the AP; and communicating with the AP using a plurality of PPDUs, each of the PPDUs comprising at least one field enabling transmissions between the WTRU and the AP under the first condition and a LRRE HARQ mode indication.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: February 20, 2024
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Hanqing Lou, Oghenekome Oteri, Li-Hsiang Sun
  • Patent number: 11901981
    Abstract: A method implemented by an apparatus having multiple antennas includes determining information that is associated with a baseband channel. The information indicating any of: measurement information and channel information. The apparatus transmits a signal for requesting baseband beam tracking. The signal transmission is based on a determination that system performance is degraded in a beamforming transmission and re-estimation of the baseband channel is part of a current link adaptation procedure.
    Type: Grant
    Filed: December 5, 2022
    Date of Patent: February 13, 2024
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Rui Yang, Alphan Sahin, Hanqing Lou, Li Hsiang Sun
  • Patent number: 11895517
    Abstract: An enhanced sector level sweep procedure is provided herein. A method may include transmitting a plurality of beacon frames in a corresponding plurality of transmit sectors, wherein the plurality of beacon frames are transmitted within a beacon interval. The method may include receiving, from a second communication device, a first transmission including information indicating a first ranking. The first ranking is based on a characteristic of at least a first subset of the transmit sectors. The first transmission is received in a sector corresponding to one of the first subset of transmit sectors. The method may include receiving, from a third communication device, a second transmission including information indicating a second ranking. The second ranking is based on a characteristic of at least a second subset of the transmit sectors. The second transmission is received in a sector corresponding to one of the second subset of transmit sectors.
    Type: Grant
    Filed: January 27, 2022
    Date of Patent: February 6, 2024
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Hanqing Lou, Xiaofei Wang, Li-Hsiang Sun, Oghenekome Oteri, Rui Yang
  • Publication number: 20240040531
    Abstract: Methods and apparatuses are described herein for multiple AP coordination in wireless local area networks (WLANs). For example, a station (STA) may receive, from a first access points (APs), a probe response frame that includes one or more indicators indicating multiple AP operation capabilities of the first AP and a second AP. The STA may transmit, to at least one of the first AP or the second AP, a multiple AP association request frame that enables the first AP to be associated with the second AP for a multiple AP operation. The STA may receive, from the first AP, a first multiple AP association response frame indicating acceptance or rejection of the multiple AP operation with the first AP. The STA may receive, from the second AP, a second multiple AP association response frame indicating acceptance or rejection of the multiple AP operation with the second AP.
    Type: Application
    Filed: June 19, 2023
    Publication date: February 1, 2024
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Oghenekome Oteri, Alphan Sahin, Xiaofei Wang, Hanqing Lou, Li-Hsiang Sun, Rui Yang, Frank La Sita
  • Publication number: 20240031064
    Abstract: Methods, apparatus, systems, architectures and interfaces for compressing hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback bits performed by a wireless transmit/receive unit (WTRU) receiving a transmit block (TB) including code block group (CBG) data are provided. The method includes receiving, by the WTRU, information associated with transmitting compressed HARQ-ACK feedback information, receiving, by the WTRU, a TB; determining, by the WTRU, a countdown downlink assignment index (CD_DAI) associated with the received TB; generating, by the WTRU, the compressed HARQ-ACK feedback information by compressing HARQ-ACK feedback bits associated with the received TB; and on condition that: (1) the CD_DAI is equal to zero or (2) the WTRU determines to provide feedback information, transmitting the compressed HARQ-ACK feedback information.
    Type: Application
    Filed: September 29, 2023
    Publication date: January 25, 2024
    Inventors: Hanqing Lou, Chunxuan Ye, Fengjun Xi, Kyle Pan
  • Publication number: 20240022352
    Abstract: A method performed by a STA may comprise receiving data of a MU-HE-PPDU, from an AP. The MU-HE-PPDU may comprise a HE-SIG-A field, a first HE-SIG-B portion and a second HE-SIG-B portion. The first HE-SIG-B portion may be received on a first channel and the second HE-SIG-B portion may be received on a second channel which is different than the first channel. The first HE-SIG-B portion may include one or more STA identifiers.
    Type: Application
    Filed: July 19, 2023
    Publication date: January 18, 2024
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Hanqing LOU, Oghenekome OTERI, Rui YANG, Robert OLESEN, Guodong ZHANG
  • Patent number: 11877264
    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: Grant
    Filed: May 6, 2022
    Date of Patent: January 16, 2024
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Hanqing Lou, Xiaofei Wang, Li-Hsiang Sun, Rui Yang
  • Patent number: 11871414
    Abstract: A method of multi-access point (multi-AP) communication performed by a wireless transmit/receive unit (WTRU) comprises: receiving (1510) a first trigger frame from a first access point (AP) of a plurality of APs, the first trigger frame comprising first information; receiving (1520) a second trigger frame from a second AP of the plurality of APs at a predetermined time duration after receiving the first trigger frame, the second trigger frame also comprising the first information of the first trigger frame; generating (1530) a synchronization frame based on the first trigger frame and the second trigger frame, the synchronization frame comprising synchronization information; transmitting the synchronization frame to at least the first AP and the second AP; and receiving (1540) a data transmission based on the synchronization information from each of the first AP and the second AP.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: January 9, 2024
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Oghenekome Oteri, Hanqing Lou, Li-Hsiang Sun, Xiaofei Wang, Alphan Sahin, Rui Yang, Frank La Sita
  • Publication number: 20230422303
    Abstract: A station may receive a frame transmitted to a plurality of STAs. The frame may indicate a first frequency resource allocated for the STA and a second frequency resource allocated for another STA of the plurality of STAs. The STA may transmit a data frame using the first frequency resource and receive an acknowledgement frame that acknowledges receipt of the data frame. The STA may receive a MU RTS frame transmitted to the plurality of STAs and may subsequently transmit a CTS frame in response to receipt of the MU RTS frame. The RTS/CTS transmissions may occur prior to transmission of the data frame.
    Type: Application
    Filed: September 7, 2023
    Publication date: December 28, 2023
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Hanqing Lou, Guodong Zhang, Xiaofei Wang, Juan Fang, Oghenekome Oteri, Pengfei Xia, Monisha Ghosh, Robert L. Olesen
  • Publication number: 20230422297
    Abstract: Methods and apparatus are described. A station includes a transceiver and a processor, which receive a trigger frame for an uplink (UL) transmission. The trigger frame includes an indication of resource units (RUs) for random access in an upcoming UL high efficiency trigger based packet data convergence protocol data unit and an indication that the trigger frame is a poll for a buffer status report of the STA. The processor and the transceiver transmit a buffer status of the STA using a selected one of the indicated RUs.
    Type: Application
    Filed: September 8, 2023
    Publication date: December 28, 2023
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Hanqing Lou, Guodong Zhang, Li-Hsiang Sun, Oghenekome Oteri, Robert L. Olesen, Fengjun Xi, Rui Yang, Xiaofei Wang
  • Patent number: 11855931
    Abstract: Methods and apparatuses are described herein for multiple access schemes for Wireless Local Area Network (WLAN) with full-duplex radios. For example, an access point (AP), in response to receiving a request to send (RTS) from a first station (STA), may transmit a full-duplex clear to send (FD CTS) to the first STA and a full-duplex request to send (FD RTS) to a second STA. In response to transmitting the FD RTS to the second STA, the AP may receive a clear to send (CTS) from the second STA. The AP may transmit, to both the first STA and the second STA, a FD trigger frame that includes scheduling information to enables FD communication with the first STA for uplink (UL) data and the second STA for downlink (DL) data at a same time. The scheduling information may include timing information and channel information for the FD communication.
    Type: Grant
    Filed: December 6, 2022
    Date of Patent: December 26, 2023
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Hanqing Lou, Li Hsiang Sun, Alphan Sahin, Robert L. Olesen, Xiaofei Wang, Rui Yang
  • Publication number: 20230412344
    Abstract: Systems, methods, and instrumentalities are disclosed for range extension, basic service set (B SS) color labeling, and multi-user (MU) fragmentation and control in WLANs. A range extension notification/enablement scheme, a clear channel assessment (CCA), a headroom indication, and/or power scaling may be provided for a range extension mode. BSS color may be provided for multiple-BSSs under an access point (AP). Uplink (UL) transmission may be provided with different fragmentation capabilities. A high-efficiency (HE) trigger-based UL NDP physical layer convergence protocol (PLCP) protocol data unit (PPDU) frame may be provided. A station (STA) may receive a trigger frame comprising a null data packet (NDP) indication and a trigger type. The STA may determine that the STA is an intended recipient of the trigger frame. The STA may prepare an NDP PPDU for a control frame and/or a management frame based on the trigger type.
    Type: Application
    Filed: April 24, 2023
    Publication date: December 21, 2023
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Oghenekome OTERI, Hanqing LOU, Frank LA SITA, Fengjun XI
  • Publication number: 20230412217
    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: Application
    Filed: August 21, 2023
    Publication date: December 21, 2023
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Hanqing Lou, Alphan Sahin, Xiaofei Wang, Rui Yang, Oghenekome Oteri, Li-Hsiang Sun
  • Patent number: 11849392
    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: Grant
    Filed: May 7, 2018
    Date of Patent: December 19, 2023
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Hanqing Lou, Xiaofei Wang, Oghenekome Oteri, Alphan Sahin, Li-Hsiang Sun, Rui Yang
  • Patent number: 11843428
    Abstract: Methods and apparatuses for multiple input-multiple output (MIMO) channel access are provided herein. A method performed by a station may include receiving, from an access point (AP), a frame including information indicating a broadcast address. The frame may further include a control trailer including information indicating that a multi-user multiple input-multiple output (MU-MIMO) frame is to be transmitted by the AP and information indicative of a designation of a plurality of STAs, the plurality of STAs including the STA. The frame may solicit response frames from at least the designated plurality of STAs. The method may further include transmitting a response frame to the indicated broadcast address and receiving the MU-MIMO frame from the AP.
    Type: Grant
    Filed: February 8, 2022
    Date of Patent: December 12, 2023
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Li-Hsiang Sun, Hanqing Lou, Alphan Sahin, Oghenekome Oteri, Rui Yang, Xiaofei Wang, Frank La Sita
  • Publication number: 20230397186
    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: August 22, 2023
    Publication date: December 7, 2023
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Nirav B. Shah, Guodong Zhang, Ronald Murias
  • Patent number: 11838938
    Abstract: A wireless transmit/receive unit (WTRU) may receive configuration information for a first set of resources and a second set of resources for a grantless physical uplink shared channel (PUSCH) transmission. The WTRU may determine data for transmission using the grantless PUSCH transmission. Based on the data, the WTRU may select resources from the first set or the second set for the grantless PUSCH transmission. Further, the WTRU may send the grantless PUSCH transmission including the data using the selected resources. In an example, the sending of the grantless PUSCH transmission may be part of a random access procedure. The random access procedure may be a two-step random access procedure. The random access procedure may be a random access channel (RACH) procedure. The random access procedure may depend upon a double contention pool setting, and the setting may address at least one of a data pool or a control pool.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: December 5, 2023
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Hanqing Lou, Xiaofei Wang, Rui Yang, Mihaela C. Beluri, Janet A. Stern-Berkowitz