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).
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Publication number: 20240007852Abstract: Using this described protocol an AP can control multiple STAs to allow them to utilize the same scrambling seed to scramble the data in identical data units being sent on the wireless network. The AP sends a scrambling seed indication within a frame communicated to other STAs on the network. These other STAs, then use this scrambling seed indication to scramble a data field of a data unit with an identical scrambling seed, and to transmit these packets using the same modulation and coding scheme (MCS).Type: ApplicationFiled: May 24, 2023Publication date: January 4, 2024Applicants: SONY GROUP CORPORATION, SONY CORPORATION OF AMERICAInventors: Liangxiao Xin, Li-Hsiang Sun, Qing Xia
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Publication number: 20240008086Abstract: Methods are described for overcoming contention issues during R-TWT SPs. In particular, enhanced mechanisms are defined in prioritizing transmissions of R-TWT TIDs during corresponding R-TWT SPs. In addition, enhanced access mechanisms are described for overcoming issues with stations accessing the channel after sensing an idle channel after a DIFS or AIFS time period.Type: ApplicationFiled: June 8, 2023Publication date: January 4, 2024Applicants: SONY GROUP CORPORATION, SONY CORPORATION OF AMERICAInventors: Liangxiao Xin, Li-Hsiang Sun, Qing Xia
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Publication number: 20240007860Abstract: Enhanced wireless protocols are described for stations (STAs) which are associated with Multiple-Link Devices (MLD). One embodiment describes overcoming replay attacks (with or without a modified Sequence Number (SN) even when protected by a Group Temporal Key (GTK) or similar. Other embodiments describe MLP operating enhancements associated with utilizing a Robust Security Network Element (RSNE), or NSTR Mobile AP MLD, or Target Beacon Transmission Time (TBTT) Information fields with Reduced Neighbor Reports (RNR), or Quiet Channel elements in an Association/Reassociation, or that use PPDU end alignment are all subject to specific shortcomings when applied to MLDs.Type: ApplicationFiled: June 7, 2023Publication date: January 4, 2024Applicants: SONY GROUP CORPORATION, SONY CORPORATION OF AMERICAInventors: Li-Hsiang Sun, Liangxiao Xin, Qing Xia
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Publication number: 20240008081Abstract: A wireless protocol allowing an AP to allocate time within a transmit opportunity (TXOP) to non-AP stations. The allocations are made under condition that the non-AP STA(s) will satisfy Access Class (AC) requirements communicated in a frame sent by the AP STA, such as within an MU RTS TXS Trigger frame. Upon receiving the frame, the non-AP responds on whether it can meet the conditions, such as within a Clear-To-Send (CTS) message. If the non-AP can meet the conditions, then it proceeds to transmit data (to the AP, or a peer non-AP). Otherwise, if it cannot meet the conditions, then the AP can communicate the allocation to another non-AP STA. There are also conditions for how the non-AP can aggregate data units into A-MSDUs.Type: ApplicationFiled: May 16, 2023Publication date: January 4, 2024Applicants: SONY GROUP CORPORATION, SONY CORPORATION OF AMERICAInventors: Qing Xia, Li-Hsiang Sun, Liangxiao Xin
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Publication number: 20230422297Abstract: 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: ApplicationFiled: September 8, 2023Publication date: December 28, 2023Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Hanqing Lou, Guodong Zhang, Li-Hsiang Sun, Oghenekome Oteri, Robert L. Olesen, Fengjun Xi, Rui Yang, Xiaofei Wang
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Patent number: 11855931Abstract: 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: GrantFiled: December 6, 2022Date of Patent: December 26, 2023Assignee: InterDigital Patent Holdings, Inc.Inventors: Oghenekome Oteri, Hanqing Lou, Li Hsiang Sun, Alphan Sahin, Robert L. Olesen, Xiaofei Wang, Rui Yang
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Publication number: 20230412217Abstract: 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: ApplicationFiled: August 21, 2023Publication date: December 21, 2023Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Hanqing Lou, Alphan Sahin, Xiaofei Wang, Rui Yang, Oghenekome Oteri, Li-Hsiang Sun
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Patent number: 11849392Abstract: 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: GrantFiled: May 7, 2018Date of Patent: December 19, 2023Assignee: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Hanqing Lou, Xiaofei Wang, Oghenekome Oteri, Alphan Sahin, Li-Hsiang Sun, Rui Yang
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Publication number: 20230403741Abstract: An enhanced protocol for addressing communication issues arising from using a Remote Radio Head (RRH). An Access Point (AP), denoted as Remote Radio Head (RRH) AP, consists of a Central Unit (CU) and at least one RRH that can be located remotely. The functionalities of the Medium Access Control (MAC) and the Physical (PHY) layers of the RRH AP are split between the CU and RRH; with the CU exchanging frames between the MAC layers, and the RRH transmitting and receiving the physical signals through the channel.Type: ApplicationFiled: May 16, 2023Publication date: December 14, 2023Applicants: SONY GROUP CORPORATION, SONY CORPORATION OF AMERICAInventors: Liangxiao Xin, Li-Hsiang Sun, Qing Xia
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Patent number: 11843428Abstract: 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: GrantFiled: February 8, 2022Date of Patent: December 12, 2023Assignee: InterDigital Patent Holdings, Inc.Inventors: Li-Hsiang Sun, Hanqing Lou, Alphan Sahin, Oghenekome Oteri, Rui Yang, Xiaofei Wang, Frank La Sita
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Publication number: 20230388753Abstract: Systems, methods, and devices for broadcast service negotiation and non-simultaneous transmit-receive (STR) channel blindness recovery are provided herein. Some methods performed by a Wireless Transmit/Receive Unit (WTRU), may comprise operating over a first link; operating over a second link; receiving a frame including a Network Allocation Vector (NAV) setting associated with the second link, the NAV setting indicating a time duration; and sending a transmission over the first link, wherein a duration of the transmission over the first link is shorter than or equal to the time duration indicated by the NAV setting. The frame including the NAV setting indicates that the time duration may not be extended or modified. The method may further comprise sending, by the WTRU, an indication that it the WTRU is capable of performing a multi-link restricted transmission. The WTRU may enter a sleep mode on the first link after sending the transmission over the first link.Type: ApplicationFiled: October 19, 2021Publication date: November 30, 2023Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Xiaofei Wang, Hanqing Lou, Li Hsiang Sun, Joseph Levy
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Publication number: 20230388000Abstract: 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: ApplicationFiled: August 15, 2023Publication date: November 30, 2023Applicant: InterDigital Patent Holdings, Inc.Inventors: Oghenekome Oteri, Alphan Sahin, Hanqing Lou, Li-Hsiang Sun, Rui Yang
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Publication number: 20230371075Abstract: Methods and apparatus for protection of multi-user (MU) transmission are described herein. An apparatus includes a receiver, a transmitter and a processor. The receiver and the processor detect a trigger frame for an uplink (UL) multi-user (MU) transmission. The processor and the transmitter generate and send a frame in response to the trigger frame and transmit channel availability information for a plurality of channels in response to the trigger frame. The receiver and the processor detect data in a resource unit (RU) of a downlink (DL) MU physical layer (PHY) protocol data unit (PPDU) on one of the plurality of channels. The one of the plurality of channels is based on the transmitted channel availability information.Type: ApplicationFiled: July 27, 2023Publication date: November 16, 2023Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Hanqing Lou, Oghenekome Oteri, Li-Hsiang Sun, Xiaofei Wang, Rui Yang
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Publication number: 20230362994Abstract: Methods and apparatuses for operating in multi-access point (AP) wireless networks are described herein. A method performed by an AP may include transmitting, using a set of resources, a multi-AP ready-to-send (RTS) frame to at least one other AP and a plurality of stations (STAs). The method may include transmitting another frame using a portion of the set of resources. The method may include receiving, using the portion of the set of resources, a clear-to-send (CTS) frame from at least one STA of the plurality of STAs in response to the another frame. The method may include transmitting, using the portion of the set of resources, a data frame to the at least one STA. The multi-AP RTS frame may include resource allocation information for the at least one other AP and the plurality of STAs.Type: ApplicationFiled: March 16, 2021Publication date: November 9, 2023Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Xiaofei Wang, Hanqing Lou, Li Hsiang Sun, Rui Yang
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Publication number: 20230362772Abstract: 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: ApplicationFiled: July 19, 2023Publication date: November 9, 2023Inventors: Saad Ahmad, Li-Hsiang Sun
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Publication number: 20230362814Abstract: 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: ApplicationFiled: June 8, 2023Publication date: November 9, 2023Applicant: Interdigital Patent Holdings, Inc.Inventors: Alphan Sahin, Rui Yang, Frank La Sita, Hanqing Lou, Xiaofei Wang, Li -Hsiang Sun
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Patent number: 11792846Abstract: Methods and apparatus are described. A station includes a transceiver and a processor, which detect a trigger frame for an uplink (UL) multi-user (MU) transmission. The trigger frame includes a user information field with an allocation of one or more random access resource units (RUs) and a common information field with information to set high efficiency (HE) SIGNAL-A (HE-SIG-A) fields in the UL MU transmission. The transceiver and the processor generate an HE trigger-based (TB) physical layer protocol data unit (PPDU) and set an HE-SIG-A field in the HE TB PPDU using the information in the trigger frame. The transceiver and the processor select one of the one or more random access RUs and transmit the HE TB PPDU, using the selected one of the one or more random access RUs, a short inter-frame space after the trigger frame.Type: GrantFiled: December 14, 2021Date of Patent: October 17, 2023Assignee: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Hanqing Lou, Guodong Zhang, Li-Hsiang Sun, Oghenekome Oteri, Robert L. Olesen, Fengjun Xi, Rui Yang, Xiaofei Wang
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Publication number: 20230319620Abstract: Enhanced TID-to-UP mapping is performed which allows multiple TIDs to be mapped to the UPs of the same AC. Thus, a first STA can set TID-to-UP mapping for a second STA, whereby TID-to-UP mapping can differentiate the MSDUs or A-MSDUs that are transmitted. In addition, an MSDU / A-MSDU can be classified by TID first, then use TID-to-UP mapping to map it to the corresponding UP. In addition, an SCS traffic stream can assign a TID and a UP to that SCS traffic stream. The use of these enhanced mechanism can enhance low latency performance.Type: ApplicationFiled: March 6, 2023Publication date: October 5, 2023Applicants: SONY GROUP CORPORATION, SONY CORPORATION OF AMERICAInventors: Liangxiao Xin, Mohamed Abouelseoud, Li-Hsiang Sun, Qing Xia
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Publication number: 20230319886Abstract: Methods and apparatuses are described herein for multiple-access point (multi-AP) sounding procedures in a wireless local area network (WLAN). A coordinating AP (CAP) may receive, from one or more member APs in a multi-AP set (MAPS), one or more indications indicating that the one or more member APs are capable of multi-AP sounding during a transmission opportunity (TXOP). The CAP may transmit a CAP TXOP indication (CTI) frame indicating that the multi-AP sounding is to be performed during a TXOP acquired by the CAP. The CAP may receive a CAP TXOP request (CTR) frame indicating that the one or more member APs of the MAP are willing to perform multi-AP sounding during the TXOP. The CAP may transmit a CAP TXOP AP schedule (CTAS) frame indicating a transmission schedule for one or more sounding frames to be transmitted by the one or more member APs during the TXOP.Type: ApplicationFiled: September 1, 2021Publication date: October 5, 2023Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Xiaofei Wang, Hanqing Lou, Li Hsiang Sun, Mahmoud Saad, Rui Yang, Ushasi Ghosh
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Publication number: 20230308938Abstract: 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: ApplicationFiled: August 6, 2021Publication date: September 28, 2023Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Li Hsiang Sun, Hanqing Lou, Xiaofei Wang