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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Patent number: 11770854Abstract: 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: GrantFiled: September 13, 2022Date of Patent: September 26, 2023Assignee: InterDigital Patent Holdings, Inc.Inventors: Oghenekome Oteri, Guodong Zhang, Li-Hsiang Sun, Robert L. Olesen
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Patent number: 11758584Abstract: 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: GrantFiled: April 5, 2021Date of Patent: September 12, 2023Assignee: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Hanqing Lou, Oghenekome Oteri, Li-Hsiang Sun, Xiaofei Wang, Rui Yang
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Patent number: 11751116Abstract: 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: GrantFiled: June 23, 2022Date of Patent: September 5, 2023Assignee: InterDigital Patent Holdings, Inc.Inventors: Saad Ahmad, Li-Hsiang Sun
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Patent number: 11750251Abstract: Methods and apparatus are described herein for dynamic allocation of multiple channels and data streams for multi-channel transmission and multiple-input and multiple-output (MIMO). For example, a station (STA) may receive an enhanced poll (EPoll) frame that includes a time offset, a channel offset and antenna/sector settings from an access point (AP). The STA may transmit, based on the received EPoll frame, an enhanced service period request (ESPR) frame that includes a MIMO control field and a multi-channel control field. The MIMO control field may indicate whether the STA supports MIMO transmission. The multi-channel control field may indicate whether the STA supports multi-channel transmission. Upon transmitting the ESPR frame, the STA may receive an enhanced grant frame from the AP. The enhanced grant frame may include an antenna configuration and a multi-channel allocation to enable the STA to perform the MIMO transmission and the multi-channel transmission.Type: GrantFiled: August 18, 2022Date of Patent: September 5, 2023Assignee: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Hanging Lou, Li Hsiang Sun, Oghenekome Oteri, Rui Yang
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Publication number: 20230275642Abstract: Systems and methods for multidimensional beam refinement procedures and signaling for millimeter wave WLANs. In some embodiments, there are multi-dimensional enhanced beam refinement protocol MAC and PHY frame designs that extend the MAC packet and the PPDU format with or without backwards compatibility. The multiple dimensions may be supported jointly or separately. In other embodiments, the increased data signaled in the eBRP frame designs may be more efficiently signaled with reduced BRP frame sizes, such as through a training type dependent BRP minimum duration selection procedure or use of null data packet BRP frames. In further embodiments, the maximum duration of the interframe spacing between BPR packets may be varied to improve the efficiency of BRP operation.Type: ApplicationFiled: May 9, 2023Publication date: August 31, 2023Applicant: InterDigital Patent Holdings, Inc.Inventors: Oghenekome Oteri, Hanqing Lou, Alphan Sahin, Rui Yang, Cen Lin, Xiaofei Wang, Li Hsiang Sun
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Publication number: 20230269788Abstract: An adaptive set of RTA Adaptive EDCA rules and structures are provided to allow non-AP STAs to transmit RTA packets inside a R-TWT SP. The RTA Adaptive EDCA Parameter Set can be selected in response to receiving a trigger from the associated AP, or by pre-configuration. Non-AP STAs, as R-TWT member or non-member of the current R-TWT SP, can switch from using the regular EDCA parameters to the new RTA Adaptive EDCA parameters inside the R-TWT SP. Various rules are described for duration of use, while the AP can prevent STAs from using the new RTA Adaptive EDCA at any time inside of the R-TWT SP.Type: ApplicationFiled: February 15, 2023Publication date: August 24, 2023Applicants: SONY GROUP CORPORATION, SONY CORPORATION OF AMERICAInventors: Qing Xia, Mohamed Abouelseoud, Li-Hsiang Sun, Liangxiao Xin
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Patent number: 11736158Abstract: 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: GrantFiled: September 26, 2022Date of Patent: August 22, 2023Assignee: InterDigital Patent Holdings, Inc.Inventors: Hanqing Lou, Alphan Sahin, Xiaofei Wang, Rui Yang, Oghenekome Oteri, Li-Hsiang Sun
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Publication number: 20230262769Abstract: In a MU-RTS TXS based P2P access allocation, there can be frames sent in legacy format (such as control frames in non-HT format) that do not carry a Basic Service Set Identification (BSSID) in its address fields. The Duration setting of the frames may cause a next station to be scheduled to set the basic NAV because the next station categorizes these frames as inter-BSS PPDUs. To prevent the next station from not responding to the AP's next allocation, the Duration setting of the frames are set so that they are not greater than the end time of the P2P allocation that occurs prior to the next allocation.Type: ApplicationFiled: February 7, 2023Publication date: August 17, 2023Applicants: SONY GROUP CORPORATION, SONY CORPORATION OF AMERICAInventors: Li-Hsiang Sun, Mohamed Abouelseoud, Liangxiao Xin, Qing Xia
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Publication number: 20230262770Abstract: Wireless IEEE 802.11 communication mechanisms are described for a member STA of a R-TWT SP to gain TXOP channel access before the R-TWT SP, which does not need to end before the start time of the R-TWT SP. On trigger based R-TWT SP, the TXOP time is shared to overlap the R-TWT SP; allowing the AP to behave as the TXOP holder for the frame exchange of latency sensitive traffic during the R-TWT SP. Thus, the R-TWT scheduling AP and member STAs of a R-TWT SP can contend for the channel together before the scheduled start time of the R-TWT SP. When one of these STAs gains channel access, it can reserve a TXOP until the scheduled end time of the R-TWT SP, which may extend beyond the normal TXOP limit.Type: ApplicationFiled: February 7, 2023Publication date: August 17, 2023Applicants: SONY GROUP CORPORATION, SONY CORPORATION OF AMERICAInventors: Liangxiao Xin, Li-Hsiang Sun, Mohamed Abouelseoud, Qing Xia
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Publication number: 20230254897Abstract: An enhanced method of handling block Acks, such as for latency sensitive traffic streams, for which a separate block Ack mechanism is established, which is separate from other traffic in the same TID. With this separate block Ack mechanism the recipient STA can have an independent receive reordering buffer control for latency sensitive traffic, so that the MSDU or A-MSDU of latency sensitive traffic can be passed to the next MAC process in order of increasing sequence number of the MSDUs or A-MSDUs since those MSDUs and A-MSDUs have the same QoS requirement, such as the latency time. This mechanism reduces the chances of latency sensitive traffic being stuck in a receive reordering buffer behind other traffic in the TID and having its traffic expire.Type: ApplicationFiled: January 6, 2023Publication date: August 10, 2023Applicants: SONY GROUP CORPORATION, SONY CORPORATION OF AMERICAInventors: Liangxiao Xin, Li-Hsiang Sun, Mohamed Abouelseoud, Qing Xia
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Patent number: 11722191Abstract: Multiple channel transmission in mmW Wireless Local Area Network (WLAN) systems may be provided. Multi-channel aggregation and channel bonding may include, for example, multi-channel aggregation for a single transmitter/receiver pair or multi-channel aggregation and bonding for multiple transmitter/receiver pairs with frequency and space based multiple access. Multi-channel beamforming may include, for example, one analog beam across two channels and analog circuits on each channel or a single analog circuit on both channels, one analog beam across two channels and separate digital precoding schemes on each channel, one analog beam across a primary channel and separate digital precoding schemes on each channel or two analog beams on two channels and separate digital precoding on each channel. Preamble signaling may be provided.Type: GrantFiled: April 12, 2021Date of Patent: August 8, 2023Assignee: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Oghenekome Oteri, Hanqing Lou, Rui Yang, Li-Hsiang Sun
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Patent number: 11716687Abstract: 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: GrantFiled: March 22, 2019Date of Patent: August 1, 2023Assignee: 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: 11689272Abstract: Systems and methods for multidimensional beam refinement procedures and signaling for millimeter wave WLANs. In some embodiments, there are multi-dimensional enhanced beam refinement protocol MAC and PHY frame designs that extend the MAC packet and the PPDU format with or without backwards compatibility. The multiple dimensions may be supported jointly or separately. In other embodiments, the increased data signaled in the eBRP frame designs may be more efficiently signaled with reduced BRP frame sizes, such as through a training type dependent BRP minimum duration selection procedure or use of null data packet BRP frames. In further embodiments, the maximum duration of the interframe spacing between BPR packets may be varied to improve the efficiency of BRP operation.Type: GrantFiled: April 14, 2021Date of Patent: June 27, 2023Assignee: InterDigital Patent Holdings, Inc.Inventors: Oghenekome Oteri, Hanqing Lou, Alphan Sahin, Rui Yang, Cen Lin, Xiaofei Wang, Li Hsiang Sun
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Publication number: 20230199846Abstract: A wireless communication apparatus, method or protocol for wireless STAs using CSMA/CA on a wireless local area network (WLAN). A receiver STA receives MSDUs or A-MSDUs which include an expiration time, from a transmitter STA. The receiver STA stores the MSDUs or A-MSDUs with expiration time in its receive reordering buffer of the corresponding high-throughput (HT)-immediate block acknowledgement (Ack) agreement. The receiver STA passes the MSDU or A-MSDU to a next MAC process before an expiration time of the MSDU or A-MSDU. Thus, the percentage of latency sensitive traffic packets being communicated prior to expiration is increased.Type: ApplicationFiled: December 19, 2022Publication date: June 22, 2023Applicants: SONY GROUP CORPORATION, SONY CORPORATION OF AMERICAInventors: Liangxiao Xin, Mohamed Abouelseoud, Li-Hsiang Sun, Qing Xia
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Publication number: 20230199845Abstract: A wireless communication protocol which operates with multi-link devices (MLDs) having simultaneous transmit and receive (STR) link pairs to allow transmitting a long MU PPDU by an originator on a first link, which is acknowledged (Ack) by a recipient on a second link. The Ack on the second link may be on a single resource unit (RU) which may be shared by multiple stations. The Ack may be received during the MP PPDU on the first link, making it a quick Ack. In many cases this allows the originator to perform a retransmission within the same PPDU, thus especially benefitting real-time traffic which is latency sensitive.Type: ApplicationFiled: December 19, 2022Publication date: June 22, 2023Applicants: SONY GROUP CORPORATION, SONY CORPORATION OF AMERICAInventors: Li-Hsiang Sun, Mohamed Abouelseoud, Liangxiao Xin, Qing Xia
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Publication number: 20230199844Abstract: A wireless IEEE 802.11 communication protocol under CSMA/CA for enhanced full duplex (FD) station (STA) operations. PPDU preambles are configured to incorporate STA identification and corresponding resource unit (RU) or multiple resource unit (MRU) information. An FD AP indicates STA identification and corresponding RU/MRU index of a transmission destination in the FD preamble of a downlink (DL) PPDU; while a FD non-AP STA indicates its own STA identification and corresponding RU/MRU index in the FD preamble of a uplink (UL) PPDU. The disclosed technology mitigates many issues in regard to fake collisions, partial RU fake collisions, and real collisions, toward improving communications and efficiency and reducing latencies.Type: ApplicationFiled: December 12, 2022Publication date: June 22, 2023Applicants: SONY GROUP CORPORATION, SONY CORPORATION OF AMERICAInventors: Qing Xia, Mohamed Abouelseoud, Li-Hsiang Sun, Liangxiao Xin
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Publication number: 20230199847Abstract: Enhanced R-TWT scheduling is performed in which the R-TWT scheduling AP can perform scheduling quickly to react quickly to changes in the network environment and optimize R-TWT scheduling for efficiency and stability. The R-TWT scheduling AP transmits R-TWT trigger frames and is able to collect information from R-TWT scheduled STAs which may affect R-TWT scheduling. The scheduling can take into account that some member STAs may be dozing (asleep) for several beacon intervals and do not wake up for the beacon, then the R-TWT scheduling AP initiates the update of parameters when needed to check on those STAs to determine if any updates are needed. The R-TWT trigger frame can allocate resource units (RU) for R-TWT scheduled STAs to communicate back to the R-TWT scheduling AP.Type: ApplicationFiled: December 19, 2022Publication date: June 22, 2023Applicants: SONY GROUP CORPORATION, SONY CORPORATION OF AMERICAInventors: Liangxiao Xin, Mohamed Abouelseoud, Li-Hsiang Sun, Qing Xia
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Publication number: 20230199647Abstract: New reverse direction (RD) protocols for EHT devices during reserved target wait time (R-TWT) service periods (SPs). In this protocol the R-TWT scheduling AP does not have to trigger the RD initiator when it performs as the RD responder, and can trigger TB PPDU(s). In addition, the RD initiator is enabled to inform the RD initiator to inform its non-AP peer STA about the R-TWT information in the transmitted RD PPDU. The RD initiator is enabled to send a new MU RD PPDU to both the R-TWT scheduling AP and the non-AP peer STA, which allows the AP to quickly takeover scheduling if the non-AP peer STA is a non-RTWT member and has limited access the in current ongoing R-TWT SP.Type: ApplicationFiled: November 17, 2022Publication date: June 22, 2023Applicants: SONY GROUP CORPORATION, SONY CORPORATION OF AMERICAInventors: Qing Xia, Mohamed Abouelseoud, Li-Hsiang Sun, Liangxiao Xin
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Patent number: 11683774Abstract: 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: GrantFiled: November 8, 2019Date of Patent: June 20, 2023Assignee: InterDigital Patent Holdings, Inc.Inventors: Oghenekome Oteri, Alphan Sahin, Xiaofei Wang, Hanging Lou, Li-Hsiang Sun, Rui Yang, Frank La Sita
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Patent number: 11671233Abstract: 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: GrantFiled: December 2, 2019Date of Patent: June 6, 2023Assignee: InterDigital Patent Holdings, Inc.Inventors: Janet A. Stern-Berkowitz, Pouriya Sadeghi, Nobuyuki Tamaki, Moon-il Lee, Ghyslain Pelletier, Li-Hsiang Sun, Marian Rudolf