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).

  • Patent number: 10952216
    Abstract: An access point generates a management communication frame, that includes information indicating network parameters of a wireless communication network, for transmission in an operating channel of the wireless communication network. The operating channel including i) at least one primary component channel used at least for synchronizing with client stations associated with the access point and ii) at least one scanning channel specified, by the first communication protocol, to be used for scanning by client stations not associated with the access point. The access point generates a physical layer data unit to include the management communication frame, and transmits the physical layer data unit in the at least one scanning channel, specified by the first communication protocol, to allow discovery of the wireless communication network by client stations that are not associated with the access point.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: March 16, 2021
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Liwen Chu, Hongyuan Zhang, Hui-Ling Lou
  • Publication number: 20210075575
    Abstract: A first communication device prompts a plurality of second communication devices to transmit, during a contiguous time period reserved for a range measurement exchange, respective first null data packets (NDPs) at respective times. The first communication device receives first NDPs from at least some of the second communication devices during the contiguous time period, and transmits one or more second NDPs to the plurality of second communication devices. The first communication device uses reception of the first NDPs and transmission of the one or more second NDPs to determine respective ranges between the first communication device and respective second communication devices.
    Type: Application
    Filed: November 20, 2020
    Publication date: March 11, 2021
    Inventors: Liwen Chu, Hongyuan Zhang, Christian R. Berger, Niranjan Grandhe, Sudhir Srinivasa, Hui-ling Lou
  • Publication number: 20210076439
    Abstract: A method for simultaneously communicating with multiple communication devices in a wireless local area network is described. Multiple uplink data units are received that are simultaneously transmitted by multiple second communication devices. The multiple uplink data units include a management data unit and a traffic data unit. An acknowledgment data unit is generated to acknowledge receipt of the multiple data units. The acknowledgment data unit includes (i) an indication that indicates that the acknowledgment data unit is intended for the multiple second communication devices, and (ii) respective acknowledgment information fields for the multiple second communication devices. The respective acknowledgment information fields include a first acknowledgment information field for the management data unit and a second acknowledgment information field for the traffic data unit.
    Type: Application
    Filed: November 16, 2020
    Publication date: March 11, 2021
    Inventors: Liwen Chu, Lei Wang, Jinjing Jiang, Hongyuan Zhang, Hui-ling Lou
  • Publication number: 20210076356
    Abstract: Certain specific examples are directed to or involve a plurality of vehicular communication stations including a first type and a second type which communicate over a shared communications channel characterized by a common RF frequency band. The stations may also include at least one of the plurality of vehicular communication stations broadcasting a set of vehicle-specific data over the shared communication channel for reception by the first type according to a first wireless communication protocol and concurrently for reception by the second type according to a second different wireless communication protocol. The broadcast may include a plurality of repetitive consecutive transmissions of the set of vehicle-specific data which may allow for improved range extension and reliability. Each of the repetitive consecutive transmissions may be formatted consistent with the first wireless communication protocol.
    Type: Application
    Filed: September 4, 2020
    Publication date: March 11, 2021
    Inventors: Hongyuan Zhang, Rui Cao, Yan Zhang, Liwen Chu
  • Patent number: 10945245
    Abstract: Multiple trigger frames are generated at a first communication device to trigger an uplink orthogonal frequency multiple access (OFDMA) transmission by multiple second communication devices. The multiple trigger frames include a broadcast trigger frame that includes information to indicate transmission parameters for a first subset of the second communication devices, and one or more unicast trigger frames, each of the one or more unicast trigger frame including information to indicate transmission parameters for a particular second communication device in a second subset of the second communication devices. The broadcast trigger frame is transmitted, in a first frequency portion of a downlink OFDMA transmission, to the first subset of the second communication devices, and respective unicast trigger frames are transmitted, in respective second frequency portions of the downlink OFDMA transmission, to the second subset of the second communication devices.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: March 9, 2021
    Assignee: NXP USA, INC.
    Inventors: Liwen Chu, Yakun Sun, Hongyuan Zhang, Lei Wang, Jinjing Jiang, Hui-Ling Lou
  • Publication number: 20210068184
    Abstract: Examples of wireless communication based on link use capabilities of multi-link devices is disclosed. A first multi-link device receives a first physical layer conformance procedure (PLCP) protocol data unit (PPDU) on a first link from a second multi-link device and transmits a second PPDU on the second link based on a link use capability of the second multi-link device and a backoff counter counting down to a predetermined value. A first multi-link device also transmits a PPDU on the first link and the second link at a same start time based on an link idle determination and the backoff counter counting down to a predetermined value.
    Type: Application
    Filed: August 28, 2020
    Publication date: March 4, 2021
    Inventors: Liwen Chu, Rui Cao, Hongyuan Zhang, Huiling Lou
  • Patent number: 10938454
    Abstract: A first communication device transmits a trigger frame transmission to multiple second communication devices to prompt the multiple second communication devices to simultaneously transmit in multiple communication sub-channels. The first communication device receives one or more transmissions from one or more of the second communication devices in less than all of the communication sub-channels. The first communication device generates acknowledgment information for the one or more transmissions from the one or more of the second communication devices, and transmits the acknowledgment information via all of communication sub-channels.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: March 2, 2021
    Assignee: NXP USA, INC.
    Inventors: Liwen Chu, Lei Wang, Hongyuan Zhang, Hui-Ling Lou, Yakun Sun, Jinjing Jiang
  • Patent number: 10935664
    Abstract: A first communication device generates a null data packet (NDP) announcement (NDPA) frame to announce a subsequent transmission of one or more NDPs to one or more second communication devices as part of a ranging measurement procedure. The NDPA frame is generated to include a training signal repetition field that specifies a number of instances of a training signal to be included in the one or more NDPs. The first communication device transmits the NDPA frame as part of the ranging measurement procedure. The first communication device generates at least one NDP to include a number of instances of the training signal that equals the number of instances of the training signal indicated by the training signal repetition field in the NDPA, and after transmitting the NDPA frame, transmits the at least one NDP as part of the ranging measurement procedure.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: March 2, 2021
    Assignee: NXP USA, INC.
    Inventors: Christian R. Berger, Liwen Chu
  • Patent number: 10939476
    Abstract: A method for operation of a first communication device in a wireless local area network (WLAN) communication channel between the first communication device and one or more second communication devices is described for a WLAN communication channel that has a plurality of component channels. A first component channel of the plurality of component channels is designated as a first primary channel and a second component channel of the plurality of component channels is designated as a second primary channel by the first communication device. A backoff timer that corresponds to the second component channel is suspended by the first communication device while utilizing the first component channel and without utilizing the second component channel. The backoff timer is resumed by the first communication device when utilization of the first component channel has completed.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: March 2, 2021
    Assignee: Marvell Asia Pte., Ltd.
    Inventors: Liwen Chu, Hongyuan Zhang, Hui-Ling Lou
  • Patent number: 10938495
    Abstract: An access point (AP) transmits a request-to-send (RTS) frame to a plurality of client stations. The RTS frame indicates that the plurality of client stations are requested to simultaneously transmit respective clear-to-send (CTS) frames to the AP. The AP receives at least some of the respective CTS frames from at least some of the plurality of client stations, including receiving a first CTS frame from a first client station, and receiving a second CTS frame from a second client station. The first CTS frame and the second CTS frame both span a first sub-channel, and are received simultaneously by the AP. The AP determines that the first sub-channel is available for communication with one or more client stations based on the reception of the first CTS frame and the second CTS frame.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: March 2, 2021
    Assignee: NXP USA, INC.
    Inventors: Liwen Chu, Lei Wang, Hongyuan Zhang, Hui-Ling Lou, Jinjing Jiang
  • Patent number: 10931421
    Abstract: A client station of a wireless local area network (WLAN) determines respective availabilities at the client station of a plurality of subchannels for a multi-user (MU) transmission, and generates a media access control (MAC) data unit (MPDU) that includes a MAC header. The MAC header includes a control field, and the control field includes a subfield having i) an identification (ID) that indicates the subfield includes subchannel availability information, and ii) a bitmap that indicates the respective availabilities at the client station of the plurality of subchannels. The client station transmits the MPDU to an access point of the WLAN for a subsequent allocation by the access point of wireless bandwidth for the MU transmission.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: February 23, 2021
    Assignee: NXP USA, INC.
    Inventors: Liwen Chu, Lei Wang, Jinjing Jiang, Hongyuan Zhang, Yakun Sun, Hui-Ling Lou
  • Patent number: 10928505
    Abstract: A first communication device generates a null data packet (NDP) announcement (NDPA) frame, which indicates that the first communication device will transmit a first NDP after transmitting the NDPA frame, and which includes information that indicates the NDPA frame is part of a ranging measurement exchange session. The first communication device transmits the NDPA frame as part of the ranging measurement exchange session, and transmits the first NDP after transmitting the NDPA frame. The first communication device receives a second NDP from a second communication device as part of the ranging measurement exchange session, and receives a feedback packet from the second communication device as part of the ranging measurement exchange session. The feedback packet includes feedback information regarding the ranging measurement exchange session.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: February 23, 2021
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Liwen Chu, Hongyuan Zhang, Hui-Ling Lou
  • Publication number: 20210051574
    Abstract: Operating a wireless communications network includes transmitting a management frame by a first multi-link entity of a set of entities using a reporting link associated with a first network identifier and a first communication band. The management frame includes first information associated with the first multi-link entity and second information associated with a second link of the set of entities. The second link is associated with a second network identifier.
    Type: Application
    Filed: August 14, 2020
    Publication date: February 18, 2021
    Inventors: Liwen Chu, Hongyuan Zhang, Hui-Ling Lou
  • Patent number: 10904825
    Abstract: A method for accessing a shared medium includes receiving, at a first device associated with a first basic service set (BSS), a packet from a second device associated with a second BSS. The packet includes an indication of a duration for which the shared medium is expected to be busy. The method includes setting, at the first device, a first counter for an inter-BSS channel access to the duration in response to the second BSS being different than the first BSS and in response to the duration being greater than a current value of the first counter. The method includes setting, at the first device, a second counter for an intra-BSS channel access to the duration in response to the second BSS being the same as the first BSS and irrespective of whether the duration indicated in the packet is greater than a current value of the second counter.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: January 26, 2021
    Assignee: NXP USA, INC.
    Inventors: Liwen Chu, Lei Wang, Jinjing Jiang, Hongyuan Zhang, Hui-Ling Lou
  • Patent number: 10887837
    Abstract: A method, performed by a first communication device, for transmitting a wireless local area network (WLAN) packet to a WLAN network interface device of a second communication device is described. The second communication device includes a separate wakeup radio (WUR) coupled to the WLAN network interface device. The WLAN packet is generated at the first communication device to include a WUR identifier associated with a neighbor communication device. The WUR identifier is usable by the WUR of the second communication device to identify WUR packets transmitted by the neighbor communication device. The neighbor communication device is different from the first communication device. The WLAN packet is transmitted by the first communication device to the WLAN network interface device of the second communication device.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: January 5, 2021
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Liwen Chu, Hongyuan Zhang, Hui-Ling Lou
  • Publication number: 20200413291
    Abstract: A method for multi-band sharing in a wireless communication system includes transmitting a capability announcement of a link-pair of Multi-Link Device (MLD), wherein the link-pair comprises a first link and a second link. The first link of the MLD transceives using a first transceiver mode based on the capability announcement. The second link of the MLD transceives using a second transceiver mode based on the capability announcement.
    Type: Application
    Filed: June 24, 2020
    Publication date: December 31, 2020
    Inventors: Liwen Chu, Hongyuan Zhang, Huiling Lou, Rui Cao, Yan Zhang
  • Patent number: 10880855
    Abstract: A first communication device determines which one or more types of feedback information, from among a plurality of types of feedback information associated with a range measurement exchange session, a second communication device is to provide to the first communication device in a feedback packet transmitted as part of the range measurement exchange session. The first communication device transmits to the second communication device one or more indications of the determined one or more types of feedback information that the second communication device is to provide to the first communication device in the feedback packet. The first communication device performs the range measurement exchange, including receiving the feedback packet from the second communication device, wherein the feedback packet includes the determined one or more types of feedback information.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: December 29, 2020
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Liwen Chu, Hongyuan Zhang, Christian R Berger, Niranjan Grandhe, Sudhir Srinivasa, Hui-Ling Lou
  • Publication number: 20200404496
    Abstract: A method for securing a multi-band wireless communication system includes authenticating a first station (STA) multi-link device (MLD) with a second STA MLD comprising negotiating a group of keys in a key negotiation (KN) band, the group of keys comprising a Pair-Wise Transient Key and a Group Transient Key. The KN band is one of a plurality of frequency bands. The first STA MLD includes a plurality of first STA links. The second STA MLD includes a plurality of second STA links. Each of first STA links and each corresponding second STA link are configured to transceive over a respective one of the plurality of frequency bands. Authenticating the first STA MLD in the KN band authenticates the first STA MLD for each of the frequency bands.
    Type: Application
    Filed: June 17, 2020
    Publication date: December 24, 2020
    Inventors: Liwen Chu, Manish Kumar, Hongyuan Zhang, Huiling Lou
  • Publication number: 20200404680
    Abstract: A communication device determines that simultaneous transmission and reception via multiple frequency segments in a WLAN is not permitted. The communication device transmits a first packet in a first frequency segment beginning at a first time, and transmits a second packet in a second frequency segment beginning at a second time that is different than the first time. Transmission of the second packet overlaps in time with transmission of the first packet. In response to having determined that simultaneous transmission and reception via multiple frequency segments is not permitted, the communication device includes in the first packet padding so that an end of transmission of the first packet occurs at a same time as an end of transmission of the second packet.
    Type: Application
    Filed: June 19, 2020
    Publication date: December 24, 2020
    Inventors: Liwen CHU, Hongyuan ZHANG, Hui-Ling LOU, Rui CAO, Yan ZHANG
  • Patent number: 10873909
    Abstract: A first communication device generates one or more wakeup frames for transmission to one or more second communication devices, and generates a wakeup packet to include the one or more wakeup frames for transmission in respective ones of one or more particular wakeup radio (WUR) operating channels of respective ones of the one or more second communication devices. The respective one or more WUR operating channels are determined by previous negotiation between the first communication device and respective ones of the one or more second communication devices. The first communication device transmits the wakeup packet to the one or more second communication devices, with respective ones of the one or more wakeup frames transmitted in respective ones of the one or more particular WUR operating channels to prompt the respective ones of the one or more second communication devices to transition from a low power state to an active state.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: December 22, 2020
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Liwen Chu, Rui Cao, Hongyuan Zhang, Hui-Ling Lou