Patents by Inventor Liwen Chu

Liwen Chu 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: 20210235449
    Abstract: A first communication device allocates respective portions of a communication channel, that includes at least one primary component channel and one or more non-primary component channels, to a plurality of second communication devices, including a bandwidth-limited second communication device configured to operate with a maximum bandwidth that is less than a full bandwidth of the communication channel. The bandwidth-limited second communication device is operating in a particular component channel, and allocation of a frequency portion to the bandwidth-limited second communication device is restricted to the particular component channel.
    Type: Application
    Filed: April 13, 2021
    Publication date: July 29, 2021
    Inventors: Liwen CHU, Lei WANG, Hongyuan ZHANG, Yakun SUN, Jinjing JIANG, Hui-Ling LOU
  • Publication number: 20210227529
    Abstract: Embodiments of a method and an apparatus for multi-link data transmission are disclosed. In an embodiment, a method for communications involves at a first device, transmitting, to a second device, a trigger frame that solicits at least one Physical layer Protocol Data Unit (PPDU) for uplink transmission, wherein the trigger frame includes a standard-compatible common info field that includes a trigger type field and a standard-compatible user info list field that includes at least one user info field, wherein the trigger frame includes a solicited Trigger-Based (TB) type indicator in a field in the trigger frame other than the trigger type field, and receiving, at the first device, at least one PPDU from the second device in response to the solicited TB type indicator that was transmitted in the trigger frame by the first device.
    Type: Application
    Filed: December 31, 2020
    Publication date: July 22, 2021
    Inventors: Liwen CHU, Rui CAO, Sudhir SRINIVASA, Hongyuan ZHANG, Young Hoon KWON, Hui-Ling LOU
  • Publication number: 20210219315
    Abstract: An AP transmits a multi-user first downlink transmission to a plurality of client stations via a first WLAN communication channel having a first RF bandwidth. The AP generates a MAC data unit having a trigger frame configured to prompt an uplink multi-user transmission by the plurality of client stations, and transmits a second downlink transmission to the plurality of client stations via a second WLAN communication channel having a second RF bandwidth. The second downlink transmission includes the MAC data unit. The AP receives the uplink multi-user transmission from the plurality of client stations via the second WLAN communication channel, the uplink multi-user transmission including simultaneous transmissions from the plurality of client stations within the second WLAN communication channel that overlap in time with the multi-user first downlink transmission via the first WLAN communication channel.
    Type: Application
    Filed: March 26, 2021
    Publication date: July 15, 2021
    Inventors: Hongyuan ZHANG, Liwen CHU
  • Publication number: 20210219291
    Abstract: An AP determines an overall frequency bandwidth of an operating channel of a WLAN, and one or more punctured sub-channels for the operating channel. The AP transmits a first packet to one or more client stations of the WLAN, the first packet specifying i) the overall frequency bandwidth of the operating channel, and ii) the one or more punctured sub-channels. The AP receives a second packet that includes an RTS frame from a first client station. The AP determines that one or more sub-channels in the operating channel are not idle from the standpoint of the AP, and in response to receiving the second packet, the AP transmits a third packet that includes a CTS frame that indicates to the one or more client stations of the WLAN that only a subset of sub-channels in the operating channel is reserved for a transmit opportunity of the first client station.
    Type: Application
    Filed: March 26, 2021
    Publication date: July 15, 2021
    Inventors: Liwen CHU, Hongyuan ZHANG, Hui-Ling LOU
  • Patent number: 11063718
    Abstract: Systems and techniques relating to wireless networking systems and techniques, namely employing acknowledgement mechanisms utilized with trigger frames, include: transmitting, by a first wireless device, a first frame, wherein the first frame comprises a field indicating a response frame type associated with reception of the first frame; receiving, by the first wireless device from a second wireless device, an acknowledgement (ACK) frame associated with the field in the first frame via an established wireless communication channel, the ACK frame having a frame type corresponding to the response frame type indicated in the first frame; and receiving, by the first wireless device from the second wireless device, additional frames associated with the ACK frame.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: July 13, 2021
    Assignee: MARVELL ASIA PTE, LTD.
    Inventors: Liwen Chu, Lei Wang, Jinjing Jiang, Hongyuan Zhang, Hui-Ling Lou
  • Publication number: 20210211375
    Abstract: Embodiments of a method and an apparatus for multi-link data transmission are disclosed. In an embodiment, a method of multi-link communications involves at a first MLD that supports a first link, link1, and a second link, link2, transmitting a first frame during a first Transmission Opportunity (TXOP) on link1, and a second frame during a second TXOP on link2, simultaneously to a second MLD, receiving, at the first MLD, a first response frame to the first frame transmitted on link1 after a transmission end time of the first frame, identifying, at the first MLD, that a response frame to the second frame transmitted on link2 was not received after the transmission end time of the second frame, and transmitting, at the first MLD, a third frame on link1 and a fourth frame on link2 simultaneously, after receiving the first response frame on link1.
    Type: Application
    Filed: December 31, 2020
    Publication date: July 8, 2021
    Inventors: Young Hoon KWON, Liwen CHU, Hongyuan ZHANG, Hui-Ling LOU
  • Publication number: 20210212141
    Abstract: Embodiments of a method and device for multi-link communications are disclosed. In an embodiment, a method of multi-link communications involves, at a multi-link STA device (STA MLD) that supports a first link, link1, and a second link, link2, receiving a beacon on link2, acquiring an updated critical operating parameter for link1 in response to the beacon received on link2, and operating link1 according to the acquired updated critical operating parameter.
    Type: Application
    Filed: December 31, 2020
    Publication date: July 8, 2021
    Inventors: Liwen CHU, Young Hoon KWON, Hongyuan ZHANG, Hui-Ling LOU
  • Publication number: 20210211235
    Abstract: Embodiments of an apparatus and method are disclosed. In an embodiment, a method of executing block acknowledgement operations in a multi-link communications system comprises transmitting a request for block acknowledgement response from a first multi-link device to a second multi-link device, wherein the request is either in quality of service (QoS) data frames of aggregated-media access control (MAC) protocol data unit (A-MPDU) or a block acknowledgement request, and receiving a block acknowledgment from the second multi-link device by the first multi-link device.
    Type: Application
    Filed: December 30, 2020
    Publication date: July 8, 2021
    Inventors: Liwen CHU, Young Hoon KWON, Hongyuan ZHANG, Hui-Ling LOU
  • Publication number: 20210212150
    Abstract: Embodiments of a method and an apparatus for multi-link operations are disclosed. The method involves at a multi-link device (MLD) that supports a first link, link1, and a second link, link2, announcing at least one of a capability, Basic Service Set (BSS) operating parameter, and operating mode of an AP affiliated with an AP MLD in a reported link, and at least one of a capability, Basic Service Set (BSS) operating parameter, and operating mode of an AP affiliated with an AP MLD in a reporting link via a management frame on the reporting link.
    Type: Application
    Filed: December 31, 2020
    Publication date: July 8, 2021
    Inventors: Liwen CHU, Hongyuan ZHANG, Hui-Ling LOU, Young Hoon KWON
  • Publication number: 20210211221
    Abstract: Embodiments of a method and apparatus for communications are disclosed. In an embodiment, a method for wireless communications involves, in a punctured transmission, encoding, bits in a non-legacy preamble portion of a packet to include bandwidth information and resource allocation information, and signaling, in the packet, the bandwidth information and resource allocation information for at least one of a single-user-multiple-input multiple-output (SU-MIMO) technique, a multiple-user-multiple-input multiple-output (MU-MIMO) technique, and an orthogonal frequency-division multiple access (OFDMA) technique.
    Type: Application
    Filed: December 31, 2020
    Publication date: July 8, 2021
    Inventors: Rui CAO, Hongyuan ZHANG, Liwen CHU
  • Publication number: 20210212116
    Abstract: A communication device determines whether a PHY data unit is to be transmitted in a first frequency band from among multiple frequency bands in which a WLAN communication protocol permits operation. The multiple frequency bands also include a second frequency band. The communication device determines whether the PHY data unit is to include a PS-Poll frame, and whether a BSS color is currently disabled for the WLAN. In response to i) determining that the PHY data unit is to be transmitted in the first frequency band, ii) determining that the PHY data unit is not to include a PS-Poll frame, and iii) determining that the BSS color is not currently disabled for the WLAN: the communication device determines that a TXOP duration subfield in a PHY preamble of the PHY data unit cannot be set to a value defined by the WLAN communication protocol for indicating a TXOP duration that is unspecified.
    Type: Application
    Filed: March 22, 2021
    Publication date: July 8, 2021
    Inventors: Liwen CHU, Hongyuan ZHANG, Hui-Ling LOU
  • Publication number: 20210211871
    Abstract: Embodiments of an apparatus and method are disclosed. In an embodiment, a method of executing multi-link operations in a multi-link communications system comprises performing a single frame exchange between a first multi-link device and a second multi-link device to execute a multi-link operation for multiple links between the first and second multi-link devices using a frame transmitted on a first link among the multiple links, wherein the frame includes an element that carries other link information on at least one link of the multiple links other than the first link, wherein the frame includes per-link value information that has different values for different links of the multiple link, and wherein successful execution of the single frame exchange completes the multi-link operation for at least two links of the multiple links between the first and second multi-link devices.
    Type: Application
    Filed: December 30, 2020
    Publication date: July 8, 2021
    Inventors: Liwen CHU, Young Hoon KWON, Hongyuan ZHANG, Hui-Ling LOU
  • Publication number: 20210212156
    Abstract: Embodiments of an apparatus and method are disclosed. In an embodiment, a method of enabling and disabling of links in the system a multi-link communications system comprises receiving, by a first multi-link device in the multi-link communications system, a status change information of a link in the multi-link communications system for the first multi-link device from an enabled status to a disabled status, and in response to the status change information, at least partially resetting, by the first multi-link device, parameters related to per-link operations for the link.
    Type: Application
    Filed: December 30, 2020
    Publication date: July 8, 2021
    Inventors: Young Hoon KWON, Liwen CHU, Hongyuan ZHANG, Hui-Ling LOU
  • Patent number: 11057171
    Abstract: Aspects of the disclosure provide an apparatus for wireless communication. The apparatus includes a transceiver and a processing circuit. The transceiver is configured to transmit and receive wireless signals. The processing circuit is configured to configure a field within a data unit for buffer information report, determine a first scale factor for scaling a first value indicative of buffered traffic of a first category, and a second scale factor for scaling a second value indicative of buffered traffic of a category, configure the field to include the first scale factor with the first value and the second scale factor with the second value, and provide the data unit to the transceiver for transmitting to another apparatus that allocates resources for transmission between the two apparatuses.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: July 6, 2021
    Assignee: NXP USA, Inc.
    Inventors: Liwen Chu, Lei Wang, Jinjing Jiang, Hongyuan Zhang, Hui-Ling Lou
  • Publication number: 20210204315
    Abstract: An access point manages a first wireless local area network (WLAN) in a 6 GHz radio frequency (RF) band and ii) a second WLAN operating in another RF band. The access point generates a physical layer (PHY) data unit to include a management frame having i) first information indicating first network parameters of the first WLAN, and ii) second information indicating second network parameters of the second WLAN. The AP transmits the PHY data unit in the other RF band to provide, to any client stations that are operating in the other RF band and that are also capable of operating in the 6 GHz band: the first information indicating the first network parameters of the first WLAN operating in the 6 GHz RF band to assist the any client stations that are operating in the other RF band with joining the first WLAN operating in the 6 GHz RF band.
    Type: Application
    Filed: March 12, 2021
    Publication date: July 1, 2021
    Inventors: Liwen CHU, Hongyuan ZHANG, Hui-Ling LOU
  • Patent number: 11051229
    Abstract: A physical access point manages a first wireless communication sub-network and one or more second wireless communication sub-networks. The physical access point transmits values of wireless network management parameters for the first wireless communication sub-network to inform one or more client stations of the values of the wireless network management parameters for the first wireless communication sub-network. The access point generates a list of wireless network management parameters for which values are not inherited from the first wireless communication sub-network by any of the one or more second wireless communication sub-networks, and transmits the list to inform the one or more client stations that values of the wireless network management in the list are not inherited from the first wireless communication sub-network by any of the one or more second wireless communication sub-networks.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: June 29, 2021
    Assignee: NXP USA, INC.
    Inventor: Liwen Chu
  • Patent number: 11044726
    Abstract: In a wireless communication network that operates according to a communication protocol that permits transmissions via multiple channels corresponding to multiple different frequency bandwidths, a communication device receives a packet via a first communication channel that spans a first frequency bandwidth. The communication device determines a second communication channel for transmitting an acknowledgment packet, the second communication channel spanning a second frequency bandwidth that is less than the first frequency bandwidth, the acknowledgment packet responsive to receiving the packet. The communication device transmits the acknowledgment packet via the second communication channel.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: June 22, 2021
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Liwen Chu, Xiayu Zheng, Hongyuan Zhang, Hui-Ling Lou
  • Patent number: 11032787
    Abstract: A communication device determines an identifier of a wireless network with which the communication device is not associated. While the communication device is not associated with the wireless network, the communication device participates in a ranging procedure with an access point (AP) of the wireless network. The ranging procedure is for estimating a distance between the communication device and the AP based on measuring times of flight of transmissions between the communication device and the AP. Participating in the ranging procedure includes: the communication device transmitting a packet to the AP as part of the ranging procedure. The packet includes a PHY preamble, and the PHY preamble includes a signal field. The signal field includes a wireless network identifier subfield set to the identifier of the wireless network.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: June 8, 2021
    Assignee: NXP USA, INC.
    Inventors: Liwen Chu, Christian Berger, Niranjan Grandhe, Hongyuan Zhang, Hui-Ling Lou
  • Patent number: 11032237
    Abstract: A communication device of a first wireless network determines that a first value of a first basic service set (BSS) color identifier is the same as a value of a second BSS color identifier corresponding to a neighboring second wireless network. In response, the communication device determines a second value of the first BSS color identifier. The communication device transmits one or more packets that each include i) an indication that the first BSS color identifier is changing, ii) the second value of the first BSS color identifier, and iii) a respective integer number of remaining beacon intervals corresponding to a start time when the second value of the first BSS color identifier will supersede the first value of the first BSS color identifier. Based on the start time, the communication device begins to use the second value of the first BSS color identifier with communications in the first wireless network.
    Type: Grant
    Filed: September 2, 2019
    Date of Patent: June 8, 2021
    Assignee: NXP USA, INC.
    Inventors: Liwen Chu, Hongyuan Zhang, Lei Wang, Jinjing Jiang, Hui-Ling Lou
  • Publication number: 20210160347
    Abstract: Aspects of the disclosure are directed to an apparatus having a multi-link device (MLD) including processing circuitry to communicate signals with one of a plurality of remote devices over multiple communications link. The MLD and the one of the remote devices operate in first and second communication-specific configurations as follows. A physical layer convergence procedure protocol data unit (PPDU) is transmitted in one of the links while a PPDU is communicated in another one of the links under a first configuration. A PPDU is communicated in a first one of the respective communications links with an ending time set based on a PPDU communicated in a second one of the respective communications links in a second configuration. Such approaches may be carried out based on capabilities relating to simultaneous transmission and reception of MLDs that are communicating.
    Type: Application
    Filed: November 25, 2020
    Publication date: May 27, 2021
    Inventors: Liwen Chu, Hongyuan Zhang, Huiling Lou