Patents by Inventor Xiaogang Chen
Xiaogang Chen 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: 11621753Abstract: An access point (AP) may operate as a master AP (AP1) to perform multi-AP coordinated beamforming (CBF). The AP1 may to initiate a first sounding sequence with one or more STAs associated with the AP1 (BSS STAs) and the one or more STAs associated with a second AP (AP2) (OBSS STAs). In these embodiments, initiation of the first sounding sequence triggers the AP2 to join the sounding sequence to initiate a second sound sequence with the BSS STAs and the OBSS STAs.Type: GrantFiled: May 13, 2020Date of Patent: April 4, 2023Assignee: Intel CorporationInventors: Feng Jiang, Qinghua Li, Xiaogang Chen, Po-Kai Huang, Arik Klein, Dmitry Akhmetov, Carlos Cordeiro, Chittabrata Ghosh, Ziv Avital, Dibakar Das, Cheng Chen
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Patent number: 11616615Abstract: This disclosure describes systems, methods, and devices related to adaptation of secure sounding signal. A device may determine a negotiated bandwidth to be used when communicating with a first station device. The device may determine a first bit stream used to generate a cyclic shift diversity (CSD) value based on the negotiated bandwidth, wherein a first number of bits is used for the first bit stream when a first negotiated bandwidth is used, and wherein a second number of bits is used for the first bit stream when a second negotiated bandwidth is used. The device may determine a second bit stream used to generate a random phase. The device may determine a secure a long training field (LTF) based on a combination of the first bit stream and the second bit stream. The device may cause to send a frame to the first station device, wherein the frame comprises the secure LTF.Type: GrantFiled: January 7, 2020Date of Patent: March 28, 2023Assignee: INTEL CORPORATIONInventors: Feng Jiang, Qinghua Li, Xiaogang Chen, Dibakar Das, Assaf Gurevitz, Jonathan Segev, Robert Stacey, Shlomi Vituri, Tzahi Weisman
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Patent number: 11582716Abstract: Embodiments of a station (STA) and method of communication are generally described herein. The STA may be included in a first plurality of STAs affiliated with a first multi-link logical entity (MLLE). A plurality of links may be established between the first MLLE and a second MLLE, wherein the second MLLE may be affiliated with a second plurality of STAs. The STA may receive a first subset of a sequence of MAC protocol data units (MPDUs). A second subset of the sequence of MPDUs may be transmitted by another STA of the first plurality of STAs. The STA may transmit a block acknowledgement (BA) frame that includes: a number of BA bitmaps, configurable to values greater than or equal to one; and BA control information for each of the BA bitmaps.Type: GrantFiled: March 26, 2021Date of Patent: February 14, 2023Assignee: Intel CorporationInventors: Po-Kai Huang, Robert J. Stacey, Daniel F. Bravo, Laurent Cariou, Arik Klein, Danny Ben-Ari, Ofer Schreiber, Shahrnaz Azizi, Thomas J. Kenney, Alexander W. Min, Yaron Alpert, Avi Mansour, Dave A. Cavalcanti, Jing Zhu, Ziv Avital, Xiaogang Chen, Juan Fang
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Patent number: 11569953Abstract: Methods, apparatuses, and computer readable media include an apparatus of an access point (AP) or station (STA) comprising processing circuitry configured to decode a legacy preamble of a physical layer (PHY) protocol data unit (PPDU), determine whether the legacy preamble comprises an indication that the PPDU is an extremely-high throughput (EHT) PPDU, and in response to the determination indicating the PPDU is the EHT PPDU, decode the EHT PPDU. Some embodiments determine a spatial stream resource allocation based on a row of a spatial configuration table, a row of a frequency resource unit table, a number of stations, and location of the station relative to the number of stations in user fields of an EHT-signal (SIG) field. To accommodate 16 spatial streams, some embodiments extend the length of the packet extension field, extend signaling of a number of spatial streams, and/or extend a number of EHT-SIG symbols.Type: GrantFiled: May 6, 2021Date of Patent: January 31, 2023Assignee: Intel CorporationInventors: Xiaogang Chen, Thomas J. Kenney, Shahrnaz Azizi, Robert J. Stacey, Laurent Cariou, Qinghua Li, Feng Jiang
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Publication number: 20230024519Abstract: This disclosure describes systems, methods, and devices related to an extreme high throughput (EHT) signaling structure. A device may establish a communication channel with one or more station devices (STAs). The device may generate an extreme high throughput signal field (EHT-SIG) of a header, wherein the EHT-SIG field comprises information associated with resource allocations (RUs). The device may generate a frame comprising the header. The device may assign a first RU to a first station device. The device may assign a second RU to the first station device, wherein the first RU or the second RU is an aggregation of a 26-tome RU and a neighboring RU. The device may cause to send the frame to the first station device.Type: ApplicationFiled: July 6, 2022Publication date: January 26, 2023Inventors: Xiaogang CHEN, Qinghua LI, Thomas J. KENNEY, Feng JIANG, Laurent CARIOU, Ziv AVITAL, Chen KOJOKARO, Robert STACEY
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Publication number: 20230028874Abstract: Embodiments disclosed herein are directed to communicating time-critical ultra-low latency (ULL) data using one or more dedicated resource units (RUs). A station (STA) decodes a trigger frame received from an access point station (AP) encoded to indicate resource units (RUs) of an UL PPDU for an uplink multi-user orthogonal frequency division multiple access (UL MU OFDMA) data transmission by a first and a second station STA. The trigger frame may also be encoded to indicate configuration information for a dedicated RU for time-critical ultra-low latency (ULL) UL data. The dedicated RU may be one RU of one or more RUs of the UL PPDU that are reserved for time-critical communications. The STA may encode time-critical ULL UL data for transmission to the AP on the dedicated RU during the uplink MU OFDMA data transmission by the first and second STAs. The time-critical ULL UL data may start at any time during transmission of the UL PPDU.Type: ApplicationFiled: August 26, 2022Publication date: January 26, 2023Inventors: Juan Fang, Laurent Cariou, Minyoung Park, Dave A. Cavalcanti, Xiaogang Chen, Dmitry Akhmetov
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Patent number: 11564109Abstract: An access point (AP) station (STA) (AP STA) may be configured to operate as a multi-AP controller in a multi-AP network. A multi-AP group formation message is encoded for transmission to other APs in the multi-AP network. The multi-AP group formation message is encoded to notify the APs of the formation of an extremely-high throughput (EHT) multi-AP group, to designate whether an AP is a member of an EHT multi-AP group, and whether an AP can take the role of a coordinator AP or coordinated AP within the EHT multi-AP group. For multi-AP joint processing, the AP STA is further configured to encode an AP trigger frame for transmission to the APs in the multi-AP network. The AP trigger frame is to trigger physical layer (PHY) and medium-access control layer (MAC) parameter synchronization. The AP trigger frame is to trigger transmission of aggregated MAC protocol data units (A-MPDUs) by the APs that include MAC parameters and PHY parameters.Type: GrantFiled: June 5, 2020Date of Patent: January 24, 2023Assignee: Intel CorporationInventors: Cheng Chen, Po-Kai Huang, Laurent Cariou, Carlos Cordeiro, Feng Jiang, Xiaogang Chen, Qinghua Li, Arik Klein, Daniel F. Bravo
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Patent number: 11558796Abstract: Various embodiments are generally directed to improved channel quality information feedback techniques. In one embodiment, for example, an evolved node B (eNB) may comprise a processor circuit, a communication component for execution by the processor circuit to receive a channel quality index for a physical downlink shared channel (PDSCH), the channel quality index associated with a defined reference resource, and a selection component for execution by the processor circuit to select a modulation and coding scheme (MCS) for transmission over the PDSCH of user equipment (UE) data in one or more resource blocks, the selection component to compensate for a difference between a cell-specific reference signal (CRS) overhead of the defined reference resource and a CRS overhead of the one or more resource blocks when selecting the MCS. Other embodiments are described and claimed.Type: GrantFiled: May 4, 2020Date of Patent: January 17, 2023Assignee: Apple Inc.Inventors: Alexei Davydov, Seunghee Han, Yuan Zhu, Xiaogang Chen, Alexander Maltsev, Gregory Morozov
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Patent number: 11546028Abstract: Various embodiments include an apparatus to be employed by an enhanced Node B (eNB), the apparatus comprising communication circuitry to receive, from a user equipment (UE), feedback information and control circuitry, coupled with the communication circuitry, to identify a codeword from a three-dimensional codebook based on the feedback information received from the UE, wherein the communication circuitry is further to precede data to be transmitted to the UE based on the codeword. An apparatus to be employed by a UE and additional methods are described.Type: GrantFiled: July 24, 2020Date of Patent: January 3, 2023Assignee: Apple Inc.Inventors: Yuan Zhu, Qinghua Li, Xiaogang Chen, Jong-Kae Fwu
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Patent number: 11542266Abstract: Substituted piperidines as BTK inhibitors, a preparation method thereof and a pharmaceutical application thereof. The substituted piperidines is a compound represented by a general formula (I) or a stereoisomer or a pharmaceutically acceptable salt thereof, and the substituted piperidines is used to treat BTK-related diseases such as tumors or autoimmune system diseases.Type: GrantFiled: October 6, 2021Date of Patent: January 3, 2023Assignee: HAISCO PHARMACEUTICALS PTE. LTD.Inventors: Chen Zhang, Yuting Liao, Jianmin Wang, Guozhi Zhu, Fei Ye, Pingming Tang, Xiaogang Chen, Zhenggang Huang, Shoutao Wu, Yao Li, Pangke Yan
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Publication number: 20220416964Abstract: Embodiments disclosed herein are directed to communicating time-critical ultra-low latency (ULL) data. An access point station (AP) communicates time-critical ULL data using aggregated MAC Protocol Data Unit (A-MPDU) preemption. When time-critical ULL data for a second associated STA (STA2) becomes available at a medium access control (MAC) layer of the AP during transmission of a physical layer protocol data unit (PPDU) to a first associate station (STA1), the AP may encode the time-critical ULL data in a new A-MPDU subframe for insertion before one of the A-MPDU subframes of the PPDU that has not yet been transmitted. The new A-MPDU subframe may be encoded to include zero-padding to set a size of the new A-MPDU subframe equal to a size of the A-MPDU subframe that has been preempted. The A-MPDU subframes 606 for STA1 may be encoded include a MAC address of the STA1 and the new A-MPDU subframe 608 may be encoded include a MAC address of the STA2.Type: ApplicationFiled: August 31, 2022Publication date: December 29, 2022Inventors: Juan Fang, Minyoung Park, Laurent Cariou, Qinghua Li, Dmitry Vadimovich Akhmetov, Xiaogang Chen, Dave A. Cavalcanti
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Patent number: 11540317Abstract: This disclosure describes systems, methods, and devices related to uplink (UL) null data packet (NDP) format for passive location. A device may cause to send a trigger frame that solicits poll response to one or more anchor stations involved in a passive ranging measurement. The device may identify one or more polling response frames received from the one or more anchor stations. The device may cause to send a trigger frame that solicits uplink null data packet (NDP) to the one or more anchor stations, wherein the uplink NDP comprises an indication of a high efficiency (HE) single user (SU) frame type. The device may identify one or more uplink NDPs received from the one or more anchor stations.Type: GrantFiled: December 17, 2020Date of Patent: December 27, 2022Assignee: Intel CorporationInventors: Feng Jiang, Dibakar Das, Xiaogang Chen, Chittabrata Ghosh, Qinghua Li, Jonathan Segev, Robert Stacey, Ganesh Venkatesan
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Patent number: 11540314Abstract: A wireless communication device, system and method. The device comprises a memory and processing circuitry coupled to the memory, the memory storing instructions, the processing circuitry to execute the instructions to decode an access point (AP) trigger frame from a coordinator AP including information on respective resource allocations to a plurality of APs (AP resource allocations) for simultaneous downlink (DL) data transmissions to a plurality of wireless stations (scheduled STAs). The processing circuitry is to cause transmission of a wireless frame to a plurality of scheduled STAs associated with the corresponding AP (associated scheduled STAs). The wireless frame includes information on a resource allocation by the coordinator AP to the corresponding AP for the simultaneous DL transmissions, and information on respective resource allocations to the associated scheduled STAs for data transmission from the corresponding AP.Type: GrantFiled: September 28, 2017Date of Patent: December 27, 2022Assignee: Intel CorporationInventors: Qinghua Li, Po-Kai Huang, Laurent Cariou, Robert Stacey, Feng Jiang, Xiaogang Chen
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Patent number: 11539482Abstract: This disclosure describes systems, methods, and devices related to allocating non-continuous resource units (RUs). A device may determine a non-continuous RU allocation for one or more devices in a 80 MHz bandwidth including four 20 MHz channels, the non-continuous RU allocation including disabled tones of a 20 MHz channel of the four 20 MHz channels, and the disabled tones being a subset of tones within the 20 MHz channel. The device may determine a high efficiency wireless frame comprising an indication of the non-continuous RU allocation. The device may send the high efficiency wireless frame to one or more multiple devices.Type: GrantFiled: May 4, 2019Date of Patent: December 27, 2022Assignee: Intel CorporationInventors: Xiaogang Chen, Daniel Bravo, Laurent Cariou, Po-Kai Huang, Feng Jiang, Qinghua Li, Robert Stacey
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Publication number: 20220407844Abstract: The disclosure provides some embodiments for securing long training field (LTF) sequence. A responding station (RSTA) configures a location management report (LMR) frame. The LMR frame is configured to include an LMR in respect of a previous measurement, and data to be used to generate a null data packet (NDP) for a current measurement that is to be performed following the previous measurement. The RSTA further encrypts the LMR frame using protected management frames (PMF) scheme, and transmits the encrypted LMR frame to an initiating station (ISTA) for generating an LTF sequence for the current measurement. In response to receiving an NDP announcement (NDPA) and an NDP for the current measurement from the ISTA, the RSTA generates an NDP for the current measurement based on the NDPA and the data using CCMP, and transmits the NDP to the ISTA.Type: ApplicationFiled: May 16, 2022Publication date: December 22, 2022Inventors: Qinghua Li, Jonathan Segev, Benny Abramovsky, Danny Alexander, Xiaogang Chen, Chittabrata Ghosh, Feng Jiang, Ido Ouzieli, Robert Stacey
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Patent number: 11533757Abstract: This disclosure describes systems, methods, and devices related to scrambler initialization for multi-user (MU) clear to send (CTS) transmission. A first device may identify a MU request to send (RTS) frame received from a second device. The first device may determine an initial state of a scrambler based on the first 7 bits of a service field of the MU-RTS frame. The first device may cause first data to be scrambled, using the initial state of the scrambler, resulting in second data. The first device may cause to send a MU-CTS frame that comprises the second data to the second device.Type: GrantFiled: December 8, 2020Date of Patent: December 20, 2022Assignee: Intel CorporationInventors: Xiaogang Chen, Qinghua Li, Feng Jiang, Po-Kai Huang, Assaf Gurevitz
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Patent number: 11528606Abstract: This disclosure describes systems, methods, and devices related to long training field (LTF) sequence security protection. A device may determine a null data packet (NDP) frame comprising one or more fields. The device may determine a first long training field (LTF) and a second LTF, the first LTF and the second LTF being associated with a first frequency band of the NDP frame, wherein time domain LTF symbols of first LTF and the second LTF are generated using different LTF sequences. The device may determine a third LTF and a fourth LTF, the third LTF and the fourth LTF being associated with the a second frequency band of the NDP frame, wherein time domain LTF symbols of third LTF and the fourth LTF are generated using different LTF sequences. The device may cause to send the NDP frame to an initiating or a responding device.Type: GrantFiled: March 15, 2021Date of Patent: December 13, 2022Assignee: Intel CorporationInventors: Feng Jiang, Qinghua Li, Jonathan Segev, Xiaogang Chen, Po-Kai Huang, Huaning Niu
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Publication number: 20220390589Abstract: This disclosure describes systems, methods, and devices related to passive location measurement in wireless communications. A device may perform a ranging measurement with a first device and a second device. The device may identify a first uplink (UL) location measurement report (LMR) received from the first device. The device may identify a second UL LMR received from the second device. The device may cause to send a first broadcast LMR comprising information associated with the ranging determination of the first device and the second device. The device may cause to send a second broadcast LMR comprising the measurement information carried in the first UL LMR and the second UL LMR.Type: ApplicationFiled: May 9, 2022Publication date: December 8, 2022Inventors: Feng JIANG, Qinghua LI, Jonathan SEGEV, Xiaogang CHEN, Robert STACEY
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Patent number: 11509413Abstract: For example, an apparatus may include a segment parser to parse scrambled data bits of a PPDU into a first plurality of data bits and a second plurality of data bits, the PPDU to be transmitted in an OFDM transmission over an aggregated bandwidth comprising a first channel in a first frequency band and a second channel in a second frequency band; a first baseband processing block to encode and modulate the first plurality of data bits according to a first OFDM MCS for transmission over the first channel in the first frequency band; and a second baseband block to encode and modulate the second plurality of data bits according to a second OFDM MCS for transmission over the second channel in the second frequency band.Type: GrantFiled: June 28, 2018Date of Patent: November 22, 2022Assignee: INTEL CORPORATIONInventors: Alexander W. Min, Thomas J. Kenney, Laurent Cariou, Shahrnaz Azizi, Xiaogang Chen, Robert J. Stacey, Qinghua Li
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Patent number: 11510098Abstract: Methods, computer readable media, and apparatus for determining a receive (Rx) number of spatial streams (NSS) for different bandwidths (BWs) and modulation and control schemes (MCSs) are disclosed. An apparatus is disclosed comprising processing circuitry configured to decode a supported HE-MCS and a NSS set field, the supported HE-MSC and NSS set field received from an high-efficiency (HE) station. The processing circuitry may be further configured to determine a first maximum value of N receive (Rx) SS for a MCS and a bandwidth (BW), where the first maximum value of N Rx SS is equal to a largest number of Rx SS that supports the MCS for the BW as indicated by the supported HE-MCS and NSS set field; and, determine additional maximum values based on an operating mode (OM) notification frame, and a value of an OM control (OMC) field. Signaling for BW in 6 GHz is disclosed.Type: GrantFiled: June 27, 2018Date of Patent: November 22, 2022Assignee: Intel CorporationInventors: Yaron Alpert, Laurent Cariou, Po-Kai Huang, Xiaogang Chen, Arik Klein, Danny Ben-Ari, Robert J. Stacey