Patents by Inventor Hongyuan Zhang

Hongyuan Zhang 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).

  • Publication number: 20190230197
    Abstract: Embodiments described herein provides a system for detecting data received in a low power low rate (LPMR) data frame format. The system includes a receiver and control circuitry. The receiver is configured to receive a data frame comprising an LPLR preamble portion and an LPLR data portion following the LPLR preamble portion. The LPLR preamble portion and the LPLR data portion occupy a bandwidth that is less than an allowed bandwidth. The control circuitry is configured to determine a mode of the data frame based on whether the data frame has an additional portion, and detect data field in the LPLR preamble portion from the data frame based on the mode of the data frame.
    Type: Application
    Filed: December 19, 2018
    Publication date: July 25, 2019
    Inventors: Yakun Sun, Hongyuan Zhang, Lei Wang, Hui-Ling Lou
  • Publication number: 20190230629
    Abstract: An access point receives a first uplink orthogonal frequency division multiple access (OFDMA) transmission from a plurality of client stations. The first uplink OFDMA transmission includes i) respective acknowledgment frames for the downlink OFDMA PHY data unit, and ii) respective frames that include indications of respective amounts of buffered data at the respective client stations that are to be transmitted to the access point. The access point uses the received indications of respective amounts of buffered data at the respective client stations to determine an allocation of frequency resources for a second uplink OFDMA transmission, and transmits a second downlink OFDMA PHY data unit to the plurality of client stations, which i) indicates the allocation of frequency resources to the plurality of client stations for the second uplink OFDMA transmission, and ii) is configured to prompt the plurality of client stations to begin transmitting the second uplink OFDMA transmission.
    Type: Application
    Filed: March 29, 2019
    Publication date: July 25, 2019
    Inventors: Liwen CHU, Hongyuan ZHANG, Hui-Ling LOU, Yakun SUN
  • Publication number: 20190229969
    Abstract: A communication device generates a first portion of a physical layer (PHY) preamble of a PHY data unit to include a first plurality of orthogonal frequency division multiplexing (OFDM) symbols. Each OFDM symbol of the first plurality of OFDM symbols is generated with a first OFDM tone spacing. The communication device generate a second portion of the PHY preamble to include a second plurality of OFDM symbols. Each OFDM symbol of the second plurality of OFDM symbols is generated with a second OFDM tone spacing that is a fraction 1/N of the first OFDM tone spacing, where N is a positive integer greater than one. The communication device generates a PHY data portion of the PHY data unit to include one or more third OFDM symbols. Each third OFDM symbol is generated with the second OFDM tone spacing.
    Type: Application
    Filed: March 29, 2019
    Publication date: July 25, 2019
    Inventors: Hongyuan ZHANG, Yakun SUN, Mingguang XU, Rui CAO, Hui-Ling LOU
  • Patent number: 10362152
    Abstract: A first communication device receives, from a second communication device, a trigger frame. The first communication device generates a single-user (SU) physical layer (PHY) protocol data unit that includes a PHY protocol payload, wherein the PHY protocol payload include information other than information that acknowledges a previous transmission from the second communication device. In response to the trigger frame, the first communication device transmits the SU PHY protocol data unit to the second communication device, such that the SU PHY protocol data unit is transmitted prior to the first communication device transmitting any other PHY protocol data unit after receiving the trigger frame.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: July 23, 2019
    Assignee: Marvell World Trade Ltd.
    Inventors: Yakun Sun, Hongyuan Zhang, Liwen Chu, Lei Wang
  • Publication number: 20190220257
    Abstract: Embodiments of the present invention disclose a method and an apparatus for detecting inter-instruction data dependency. The method comprises: comparing a thread number corresponding to a historical access operation with a thread number corresponding to a write access operation, if the thread number corresponding to the write access operation is less than the thread number corresponding to the historical access operation, which indicates existence of data dependency for a to-be-detected instruction, terminating the detection; or comparing a thread number corresponding to a historical write access operation with a thread number corresponding to a read access operation, if the thread number corresponding to the read access operation is less than the thread number corresponding to the historical write access operation, which indicates existence of data dependency for the to-be-detected instruction, terminating the detection.
    Type: Application
    Filed: March 21, 2019
    Publication date: July 18, 2019
    Inventors: Hongyuan LIU, Cho-LI WANG, KingTin LAM, Huanxin LIN, Bin ZHANG, Junchao MA
  • Publication number: 20190222680
    Abstract: A method, performed at a first communication device, for transmitting a physical layer (PHY) protocol data unit (PPDU) is described. An initiating PPDU is received from a second communication device. The initiating PPDU has a PHY header that indicates a first PPDU format of the initiating PPDU and a PPDU format field that indicates a second PPDU format of a responding PPDU to be transmitted in response to the initiating PPDU. The responding PPDU is generated using the second PPDU format. The responding PPDU is transmitted in response to the initiating PPDU.
    Type: Application
    Filed: October 31, 2018
    Publication date: July 18, 2019
    Inventors: Liwen CHU, Hongyuan ZHANG
  • Patent number: 10356815
    Abstract: A first communication device associated with a first communication network determines that a second communication device associated with a second communication network is located proximate to the first communication device. The first communication device generates a data unit that includes information indicating i) a color identifier of the second communication network, the color identifier usable to identify transmissions from the second communication network, and ii) that a dynamic clear channel assessment (CCA) procedure should not be used for transmissions from the second communication network. The first communication device transmits the data unit to at least one other communication device associated with the first communication network such that the at least one other communication device associated with the first communication network does not use the dynamic CCA procedure for transmissions identified as being from the second communication network.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: July 16, 2019
    Assignee: Marvell World Trade Ltd.
    Inventors: Liwen Chu, Lei Wang, Jinjing Jiang, Hongyuan Zhang, Yakun Sun, Hui-Ling Lou
  • Patent number: 10349413
    Abstract: A plurality of different OFDM tone blocks for a wireless local area network (WLAN) communication channel are assigned to a plurality of devices. An OFDMA data unit is generated, the OFDMA unit including a preamble portion and a data portion, the preamble portion having at least i) a first legacy portion that corresponds to at least a first OFDM tone block, ii) a second legacy portion that corresponds to a second OFDM tone block, iii) a first non-legacy portion that corresponds to the first OFDM tone block, iv) a second non-legacy portion that corresponds to the second OFDM tone block, and v) a third non-legacy portion that corresponds to a third OFDM tone block. The first OFDM tone block and the second OFDM tone block are separated in frequency by at least the third OFDM tone block.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: July 9, 2019
    Assignee: Marvell World Trade Ltd.
    Inventors: Hongyuan Zhang, Yakun Sun, Hui-Ling Lou, Liwen Chu
  • Patent number: 10348446
    Abstract: A communication device determines a format for a physical layer (PHY) data unit. The communication device selects i) a length value to be included in a field in a legacy portion of a PHY preamble of the PHY data unit, and ii) a phase of modulation of an orthogonal frequency division modulation (OFDM) symbol in a non-legacy portion of the PHY preamble. The length value and the phase of modulation are selected to correspond to the determined format. A first value of a remainder resulting from dividing the length value by three corresponds to a first subset of formats; a second value of the remainder resulting from dividing the length value by three corresponds to a second subset of one or more formats. When the determined format belongs to the first subset, the phase of modulation of the OFDM symbol in the non-legacy portion of the PHY preamble indicates whether the PHY data unit conforms to a multi-user format.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: July 9, 2019
    Assignee: Marvell International Ltd.
    Inventors: Yakun Sun, Hongyuan Zhang
  • Publication number: 20190207704
    Abstract: Systems, apparatuses and methods described herein provide a method for padding a signal extension of orthogonal frequency-division multiplexing (OFDM) symbols. A transceiver may obtain a plurality of data symbols for transmission, and determine that a number of information bits for a last symbol of the plurality of data symbols is not an integer value. A special padding rule may be applied to add padding bits to the last symbol. A number of coded bits for the last symbol may be determined when the number of information bits for the last symbol has changed, and the plurality of data symbols for data transmission may be encoded based on the determined number of coded bits for the last symbol.
    Type: Application
    Filed: March 7, 2019
    Publication date: July 4, 2019
    Inventors: Yakun Sun, Hongyuan Zhang, Rui Cao, Sudhir Srinivasa
  • Publication number: 20190199566
    Abstract: Systems, methods, and apparatuses are disclosed herein for aligning HE-LTFs corresponding to a plurality of users by determining a respective number of spatial streams corresponding to each user, determining a highest respective number of spatial streams of the spatial streams, and setting an alignment number of HE-LTF symbols to be equal to or larger than the highest respective number of spatial streams. For each respective user, a respective matrix of HE-LTF symbols corresponding to the respective number of spatial streams of the respective user is selected, and it is determined whether the respective matrix of HE-LTF symbols has fewer symbols than the alignment number. In response to determining that the respective matrix of HE-LTF symbols has fewer symbols than the alignment number, padding symbols may be added to the respective matrix to yield a number of HE-LTF symbols in the respective matrix that corresponds to the alignment number.
    Type: Application
    Filed: March 4, 2019
    Publication date: June 27, 2019
    Inventors: Yakun Sun, Hongyuan Zhang, Rui Cao
  • Patent number: 10334571
    Abstract: One or more trigger frames are generated at a first communication device to trigger an uplink orthogonal frequency multiple access (OFDMA) transmission by multiple second communication devices. Each of the one or more trigger frames (i) includes an indication of a trigger type and (ii) is formatted according to the indicated trigger type. The first communication device transmits the one or more trigger frames to the multiple second communication devices. The first device then receives the triggered uplink OFDMA transmission that includes respective transmissions from the multiple second communication devices.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: June 25, 2019
    Assignee: MARVELL WORLD TRADE LTD.
    Inventors: Liwen Chu, Yakun Sun, Hongyuan Zhang, Lei Wang, Jinjing Jiang, Hui-Ling Lou
  • Publication number: 20190182863
    Abstract: A communication device sets a first channel access timer to a first duration in which at least a first portion of a communication channel is expected to be busy, the first timer corresponding to a first one of a plurality of component channels of the communication channel. The communication device also sets a second channel access timer to a second duration in which at least a second portion of the communication channel is expected to be busy, the second timer corresponding to a second one of the plurality of component channels. The communication device counts down the first timer and the second timer. When at least one of the first timer and the second timer reaches zero, the communication device determines whether one or more of the component channels are idle, and transmits at least one signal in at least one of the component channels determined to be idle.
    Type: Application
    Filed: November 2, 2018
    Publication date: June 13, 2019
    Inventors: Liwen CHU, Hongyuan ZHANG, Hui-Ling LOU
  • Publication number: 20190182714
    Abstract: A first communication device configured is for communication with one or more second communication devices over a communication channel. The first communication device generates a first bandwidth indication of a first bandwidth of a first channel segment of the communication channel, and generates a second bandwidth indication, separate from the first bandwidth indication, of a second bandwidth of a second channel segment of the communication channel. The first channel segment does not overlap in frequency with the second channel segment. The first communication device generates one or more media access control protocol (MAC) data units to include the first bandwidth indication and the second bandwidth indication, and transmits the one or more MAC data units to the one or more second communication devices to indicate the first bandwidth of the first channel segment and the second bandwidth of the second channel segment to the one or more second communication devices.
    Type: Application
    Filed: November 2, 2018
    Publication date: June 13, 2019
    Inventors: Liwen CHU, Hongyuan ZHANG, Hui-Ling LOU
  • Patent number: 10320459
    Abstract: In a method for reducing interference in a first wireless communication network and a second wireless communication network, a first access point (AP) device of the first wireless communication network coordinates with a second AP device of the second wireless communication network with respect to utilizing transmit beamforming at the first AP device and transmit beamforming at the second AP device for the purpose of reducing interference in the first wireless communication network and the second wireless communication network. Based on coordinating with the second AP device, the first AP device uses a beamforming matrix to transmit, via a multiple input, multiple output (MIMO) communication channel, to one or more first stations in the first wireless communication network for mitigating interference between the first wireless communication network and the second wireless communication network.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: June 11, 2019
    Assignee: Marvell World Trade Ltd.
    Inventors: Hongyuan Zhang, Rohit U. Nabar, Pen Chung Li
  • Patent number: 10320551
    Abstract: Systems and techniques relating to wireless communications are described. A transmitter for a wireless local area network (WLAN) identifies a channel bonding mode out of a number of channel bonding modes. The channel bonding mode includes two or more available channels used by the transmitter for data transmission in the WLAN, and the two or more available channels indicating at least one busy channel not used by the transmitter for data transmission. The channel bonding mode is signaled to a receiver using a bandwidth field of a legacy signal field that is duplicated across respective channels used in the WLAN, the legacy signal field being in a preamble portion of a frame. The frame is transmitted to the receiver, wherein the frame includes a data portion of the frame that occupies the two or more available channels according to the channel bonding mode.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: June 11, 2019
    Assignee: Marvell World Trade Ltd.
    Inventors: Rui Cao, Hongyuan Zhang
  • Patent number: 10320690
    Abstract: A first communication device generates a physical layer (PHY) protocol data unit having a beginning portion and an ending portion, where the beginning portion includes a PHY protocol header having a PHY protocol preamble, and the ending portion includes a reference signal. The PHY protocol data unit prompts a second communication device to record a first time corresponding to reception of the reference signal by the second communication device. The first communication device transmits the PHY protocol data unit, records a second time corresponding to transmission of the reference signal by the first communication device. The first communication device calculates a time of flight of the PHY protocol data unit using the second time, and/or transmits the second time to the second communication device, a third communication device, or both, to facilitate calculation of the time of flight of the PHY protocol data unit using the second time.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: June 11, 2019
    Assignee: Marvell International Ltd.
    Inventors: Liwen Chu, Sagar A. Tamhane, Hongyuan Zhang, Sudhir Srinivasa, Hui-Ling Lou
  • Publication number: 20190173710
    Abstract: In a method for wireless communication, a communication device selects a downclocking ratio for generating a physical layer (PHY) protocol data unit (PPDU) to be transmitted in a vehicular communication network. The communication device generates the PPDU i) according to the selected downclocking ratio, and ii) as a downclocked version of a PPDU format defined by one of a) the IEEE 802.11n Standard, b) the IEEE 802.11ac Standard, and c) the IEEE 802.11ax Standard. The communication device transmits the PPDU in the vehicular communication network.
    Type: Application
    Filed: November 2, 2018
    Publication date: June 6, 2019
    Inventors: Rui CAO, Hongyuan ZHANG, Hui-Ling LOU, Xiayu ZHENG
  • Patent number: 10313274
    Abstract: I/O board of VXLAN switch removes first VXLAN encapsulation from a packet, determines to perform layer 3 forwarding for the packet and sends the packet to a fabric board of the VXLAN switch. The fabric board searches out a layer 3 entry matching a destination IP address of the packet from a local layer 3 table, modifies a source MAC address of the packet into a gateway MAC address of the VXLAN switch, modifies a destination MAC address of the packet into a destination MAC address in the layer 3 entry, and when an egress port in the layer 3 entry is a VXLAN tunnel port, sends the modified packet to an I/O board associated with the egress port in the layer 3 entry. The I/O board associated with the egress port receives the packet, adds second VXLAN encapsulation to the packet and forwards the packet to a VXLAN.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: June 4, 2019
    Assignee: New H3C Technologies Co., Ltd.
    Inventors: Yang Zhang, Ling Kuang, Minghui Wang, Hongyuan Zhang, Hai Hu, Guangliang Wen
  • Patent number: 10313275
    Abstract: I/O board of a VXLAN switch removes VXLAN encapsulation from a packet, determines to perform layer 3 forwarding for the packet and sends the packet to a fabric board of the VXLAN switch. The fabric board determines to perform layer 3 forwarding for the packet, searches out a layer 3 entry matching a destination IP address of the packet from a local layer 3 table, modifies a source MAC address of the packet into a gateway MAC address of the VXLAN switch, modifies a destination MAC address of the packet into a destination MAC address in the layer 3 entry, and when an egress port in the layer 3 entry is a VLAN port, sends the packet to an I/O board associated with the egress port. The I/O board associated with the egress port forwards the packet to a VLAN via the egress port in the layer 3 entry.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: June 4, 2019
    Assignee: New H3C Technologies Co., Ltd.
    Inventors: Yang Zhang, Ling Kuang, Minghui Wang, Hongyuan Zhang, Hai Hu, Guangliang Wen