Patents by Inventor Li-Hsiang Sun

Li-Hsiang Sun 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: 12273920
    Abstract: A preamble-based collision detection mechanism for use in wireless local area networks (WLANS), having one or more full-duplex (FD) stations. In addition, a new collision resolution estimation and scheduling mechanism is described for prioritized communication. These techniques can allow for more rapid collision detection and resolution, without the need of performing self-interference (SI) estimation. The techniques includes use of orthogonal preambles, in the time domain and/or frequency domain, into which FD stations embed priority information.
    Type: Grant
    Filed: August 11, 2022
    Date of Patent: April 8, 2025
    Assignees: SONY GROUP CORPORATION, SONY CORPORATION OF AMERICA
    Inventors: Qing Xia, Li-Hsiang Sun, Mohamed Abouelseoud, Liangxiao Xin
  • Patent number: 12273157
    Abstract: A method for multiple access point (AP) transmission is disclosed. The method comprises receiving a repetition beacon from each of a plurality of APs, each received repetition beacon comprising a common information part and an AP-specific information part; decoding at least a subset of the received common information parts to obtain a first parameter; decoding the received AP-specific information parts to obtain a second parameter for each of the plurality of APs; performing a calculation based on the first parameter, the obtained second parameters and a number of the plurality of APs to obtain a calculation result; and transmitting a feedback based on the calculation result to the plurality of AP.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: April 8, 2025
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Hanqing Lou, Xiaofei Wang, Li-Hsiang Sun, Oghenekome Oteri, Rui Yang, Joseph S. Levy, Frank La Sita
  • Patent number: 12256392
    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: Grant
    Filed: May 1, 2020
    Date of Patent: March 18, 2025
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Hanqing Lou, Alphan Sahin, Li-Hsiang Sun, Joseph S. Levy, Rui Yang
  • Patent number: 12250053
    Abstract: Methods for multiple input-multiple output (MIMO) transmission are provided herein. A method may include sensing, using at least one of a plurality of antenna chains, radio frequency (RF) energy on a channel in a first time duration and may indicate the channel is busy. RF energy may be sensed on the channel using the at least one of the plurality of antenna chains in a second time duration and may indicate the channel is not busy. A method may include sending energy level sensed during the second time duration, a frame using the at least one of the plurality of antenna chains. The frame may indicate timing information associated with a MIMO transmission. The MIMO transmission may be sent using the indicated timing information and the at least one of the plurality of antenna chains.
    Type: Grant
    Filed: August 15, 2023
    Date of Patent: March 11, 2025
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Alphan Sahin, Hanqing Lou, Li-Hsiang Sun, Rui Yang
  • Patent number: 12237885
    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: August 21, 2023
    Date of Patent: February 25, 2025
    Inventors: Hanqing Lou, Alphan Sahin, Xiaofei Wang, Rui Yang, Oghenekome Oteri, Li-Hsiang Sun
  • Patent number: 12231374
    Abstract: A wireless transmit/receive unit (WTRU) may monitor a common physical downlink control channel (PDCCH) search space for a downlink control information (DCI) signal and a first radio network terminal identifier (RNTI). In an example, the DCI signal may include an uplink (UL)/downlink (DL) configuration indication. In a further example, the first RNTI may be associated with UL/DL configuration information. The WTRU may transmit UL data or receive DL data based on the received UL/DL configuration indication. In another example, the DCI may include a plurality of UL/DL configuration indications. In an additional example, a plurality of WTRUs may monitor the common PDCCH search space for the first RNTI. Also, the UL/DL configuration indication may indicate UL/DL configuration information on a symbol basis. Further, the WTRU may receive a second RNTI which is associated with the UL/DL configuration indication.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: February 18, 2025
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Janet A. Stern-Berkowitz, Pouriya Sadeghi, Nobuyuki Tamaki, Moon-il Lee, Ghyslain Pelletier, Li-Hsiang Sun, Marian Rudolf
  • Patent number: 12225584
    Abstract: A wireless protocol performing Restricted Target Wait Time (R-TWT) signaling and its parameters to reduce latency, such as for real-time application traffic. Further control of traffic flow is provided during the R-TWT Service Period (SP), including whether: R-TWT SP can be extended, multiple overlapped R-TWT SPs on different links can be started, spatial reuse is required during R-TWT SP, allowance of transmission outside R-TWT SP, or use of Quiet element to protect R-TWT SP, whereby R-TWT operation (mode) is described with enhanced operations. Protocol is applicable to Wireless Local Area Networks (WLANs), and is especially well suited for 802.11be 802.11ax, Real-Time Application (RTA) traffic such as on time sensitive networks, Wi-Fi and on Multi-Link Devices (MLDs).
    Type: Grant
    Filed: February 24, 2022
    Date of Patent: February 11, 2025
    Assignees: SONY GROUP CORPORATION, SONY CORPORATION OF AMERICA
    Inventors: Liangxiao Xin, Mohamed Abouelseoud, Li-Hsiang Sun, Qing Xia
  • Patent number: 12225494
    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: Grant
    Filed: June 19, 2023
    Date of Patent: February 11, 2025
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Oghenekome Oteri, Alphan Sahin, Xiaofei Wang, Hanqing Lou, Li-Hsiang Sun, Rui Yang, Frank La Sita
  • Publication number: 20250048174
    Abstract: Methods and apparatus for multi-link (ML) steering and control in wireless local area network (WLAN) are disclosed. A station (STA) multi-link device (MLD) may communicate over a plurality of links. The STA MLD may receive, from an access point (AP) MLD, on a first link of the plurality of links, a first frame comprising a ML element, where the ML element includes pausing information indicating a period of time during which the STA MLD will pause transmission and reception on the first link. The STA MLD may send, to the AP MLD, on a second link of the plurality of links and during the indicated period of time, uplink (UL) traffic, wherein the first link and the second link are multi-directional links. The STA MLD may be non-simultaneous transmit and receive (non-STR), and the AP MLD may be capable of STR.
    Type: Application
    Filed: October 21, 2024
    Publication date: February 6, 2025
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Li Hsiang Sun, Hanqing Lou, Xiaofei Wang
  • Publication number: 20250048217
    Abstract: Coordinated P-GW change for SIPTO may be provided. A WTRU may send and/or receive one or more flows via a first PDN connection and via a first P-GW. The WTRU may send an indication to the network that at least one flow of the first PDN connection is available for SIPTO. The indication may include one or more SIPTO preferences. The WTRU may receive a message from a MME. The message may trigger establishment of a second PDN connection via a second P-GW. The WTRU may move, while maintaining the first PDN connection, the at least one flow from the first PDN connection to the second PDN connection. The WTRU may deactivate the first PDN connection when the one or more flows have been moved to the second PDN connection and/or when no information has been received via the first PDN connection after a predetermined duration.
    Type: Application
    Filed: October 21, 2024
    Publication date: February 6, 2025
    Inventors: Saad Ahmad, Li-Hsiang Sun
  • Patent number: 12219555
    Abstract: A wireless communications protocol for enabling legacy (non-EHT) stations (STAs) to operate on the conditional link of the Soft AP MLD. Legacy devices can connect and setup link connections on the conditional link, and the scheduler is configured to allow legacy STAs to use the conditional link if there is no IDC interference issue at the soft AP MLD. This enhanced protocol utilizes either a cooperative HCCA schedule created for simultaneous transmission and reception over the basic link and conditional link, or an adaptive polling-based scheduling performed for the conditional link in response to the link status of the basic link.
    Type: Grant
    Filed: May 5, 2022
    Date of Patent: February 4, 2025
    Assignees: SONY GROUP CORPORATION, SONY CORPORATION OF AMERICA
    Inventors: Qing Xia, Mohamed Abouelseoud, Li-Hsiang Sun, Liangxiao Xin
  • Patent number: 12218763
    Abstract: Methods and apparatuses are described herein for HARQ signaling and communications in wireless networks. For example, a method implemented in a STA comprises receiving a first MU transmission including a first set of HARQ bits, a first set of user data for STAs including the STA, a preamble including information indicating that the MU transmission includes the first set of HARQ bits, and a first set of HARQ Process IDs associated with the first set of HARQ bits; determining a subset of HARQ bits of the first set of HARQ bits; transmitting a response message indicating a reception status of the subset of HARQ bits; and receiving a second MU transmission including a second set of HARQ bits, a second set of user data for the plurality of STAs, and a second set of HARQ Process IDs associated with the second set of HARQ bits.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: February 4, 2025
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei Wang, Oghenekome Oteri, Hanqing Lou, Li Hsiang Sun, Joseph Levy, Alphan Sahin, Frank LaSita
  • Patent number: 12207304
    Abstract: Methods and apparatuses are described herein for full-duplex transmission opportunity discovery and transmission in a wireless 802.11 network. A station (STA) may receive a transmission opportunity (TxOP) setup frame from an access point (AP), the TxOP setup frame including information enabling the STA to transmit a first measurement frame and another STA to transmit a second measurement frame. The STA may transmit the first measurement frame to the other STA, receive the second measurement frame from the other STA, and transmit feedback to the AP based on the received second measurement frame. The STA may receive, based on the feedback, a trigger frame from the AP to communicate during a TxOP and receive, during the TxOP, downlink data from the AP.
    Type: Grant
    Filed: September 26, 2023
    Date of Patent: January 21, 2025
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Guodong Zhang, Li-Hsiang Sun, Robert L. Olesen
  • Publication number: 20250024370
    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: September 30, 2024
    Publication date: January 16, 2025
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Hanqing Lou, Xiaofei J. Wang, Oghenekome Oteri, Alphan Sahin, Li-Hsiang Sun, Rui Yang
  • Patent number: 12199721
    Abstract: An access point (AP) may transmit a null data packet announcement (NDPA) with an indication of a resource unit of a bandwidth that feedback is requested. The AP may transmit a null data packet (NDP) for measurement of a channel quality for a resource unit of a bandwidth. The AP may transmit, based on a response, another feedback request for resource units of the bandwidth.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: January 14, 2025
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Hanqing Lou, Rui Yang, Robert L. Olesen, Alphan Sahin, Li-Hsiang Sun
  • Patent number: 12192154
    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 19, 2023
    Date of Patent: January 7, 2025
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Hanqing Lou, Li Hsiang Sun, Alphan Sahin, Robert L. Olesen, Xiaofei Wang, Rui Yang
  • Patent number: 12185248
    Abstract: Exemplary embodiments disclosed herein provide procedures for power efficient and rapid access point (AP) discovery using wake up radios. Additional embodiments provide procedures for securely waking up stations (STAs) using wake up radios (WURs). Methods are further described herein for coverage range detection and STA roaming for wake up radios. Further embodiments relate to procedures for coexistence for wake up radios and primary connectivity radios.
    Type: Grant
    Filed: July 26, 2021
    Date of Patent: December 31, 2024
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei Wang, Li-Hsiang Sun, Oghenekome Oteri
  • 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
  • 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