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: 20220303893
    Abstract: Various embodiments relate to a multi-link device (MLD) access point configured to establish a target wake time (TWT) with a MLD station, wherein a plurality of links are established between the MLD access point and the MLD station, including: a transmitter configured to: transmit a TWT set up frame to the MLD station configured to indicate whether the TWT set up frame is applied to multiple links of the plurality of links; announce a broadcast TWT by transmitting a TWT element with just one Broadcast TWT Parameter Set field if a Broadcast TWT Parameter Set field includes optional fields; and negotiate with the MLD station an individual TWT for multiple links, through one TWT element wherein the number of the multiple links to which the individual TWTs applies is less than or equal than the number of radios of the MLD access point and the MLD station, and the number of the multiple links to which the individual TWTs applies is up to the total number of links when the MLD station is in eMLSR/eMLMR mode.
    Type: Application
    Filed: March 22, 2022
    Publication date: September 22, 2022
    Inventor: Liwen CHU
  • Patent number: 11452063
    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: December 22, 2020
    Date of Patent: September 20, 2022
    Assignee: Marvell Asia Pte Ltd
    Inventors: Liwen Chu, Hongyuan Zhang, Christian R. Berger, Niranjan Grandhe, Sudhir Srinivasa, Hui-Ling Lou
  • Patent number: 11451337
    Abstract: A first communication device receives one or more physical layer (PHY) data units, which include a plurality of media access control (MAC) layer data units, from a second communication device via a communication channel that includes a first frequency segment and a second frequency segment separated by a gap in frequency, including simultaneously i) receiving a first MAC layer data unit via the first frequency segment of the communication channel, and ii) receiving a second MAC layer data unit via the second frequency segment of the communication channel. The first communication device generates acknowledgement information for the plurality of MAC layer data units, and transmits the acknowledgment information to the second communication device via one or both of i) the first frequency segment and ii) the second frequency segment.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: September 20, 2022
    Assignee: NXP USA, Inc.
    Inventors: Liwen Chu, Hongyuan Zhang
  • Publication number: 20220278716
    Abstract: In a method for simultaneously communicating with multiple communication devices in a wireless local area network a first communication device receives a plurality of uplink a data units simultaneously transmitted by multiple second communication devices. The first communication device generates an acknowledgement data unit to acknowledge receipt of the multiple data units simultaneously transmitted by multiple second communication devices. The acknowledgement data unit includes (i) an indication that indicates that the acknowledgement data unit is intended for multiple second communication devices and (ii) respective acknowledgement information for the multiple second communication devices. The acknowledgement data unit is transmitted from the first communication device to the multiple second communication devices.
    Type: Application
    Filed: May 18, 2022
    Publication date: September 1, 2022
    Inventors: Liwen Chu, Lei Wang, Jinjing Jiang, Hongyuan Zhang, Hui-Ling Lou
  • Publication number: 20220264566
    Abstract: Embodiments of a device, a system, and a method for wireless communications are disclosed. In an embodiment, a device includes a processor configured to initiate an assisted single-user (SU) transmission, where the device is a Transmission Opportunity (TXOP) owner that allocates part of a TXOP, and exchange frames according to the assisted SU transmission.
    Type: Application
    Filed: January 24, 2022
    Publication date: August 18, 2022
    Inventors: Liwen Chu, Young Hoon Kwon, Hongyuan Zhang, Huiling Lou
  • Patent number: 11411627
    Abstract: A first communication device receives a null data packet (NDP) transmitted by a second communication device as part of a multi-user beamforming training transmission sequence. The NDP includes a set of one or more training signals that allow the first communication device to estimate a communication channel from the second communication device to the first communication device. The first communication device generates, based on the set of one or more training signals included in the NDP received from the second communication device, an aggregate media access control protocol data unit (A-MPDU) to include a plurality of fragments of beamforming training information for the second communication device. No single fragment among the plurality of fragments includes an entirety of the beamforming training information. The first communication device transmits the A-MPDU to the second communication device in a single physical layer (PHY) data unit and as part of a multi-user transmission.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: August 9, 2022
    Assignee: Marvell Asia Pte Ltd
    Inventors: Liwen Chu, Yakun Sun, Rui Cao, Hongyuan Zhang, Hui-Ling Lou
  • Publication number: 20220248489
    Abstract: One example discloses a first multi-link device (MLD) within a wireless local area network (WLAN), including: a controller configured to receive a multi-link setup request for the first MLD to associate with a second MLD on a first set of PHY-layer links; wherein the controller is configured to transmit a response to the second MLD; and wherein the response associates the first MLD with the second MLD on a second set of PHY-layer links.
    Type: Application
    Filed: February 2, 2022
    Publication date: August 4, 2022
    Inventors: Young Hoon Kwon, Liwen Chu, Hongyuan Zhang
  • Publication number: 20220240264
    Abstract: Various embodiments relate to an access point (AP) configured to support a high priority (HP) service, including: a transceiver configured to: announce first enhanced distributed channel access (EDCA) parameters for a first device associated with the AP, wherein the first EDCA parameters support the HP service; announce second EDCA parameters for a second device associated with the AP that does not support the HP service; receive a HP priority access request frame from the first device configured to request HP services; determine that the second device supports the HP service through negotiation; and transmit an HP priority access response frame to the first device enabling HP traffic transmission by the first device.
    Type: Application
    Filed: December 29, 2021
    Publication date: July 28, 2022
    Inventors: Liwen CHU, Young Hoon KWON, Hongyuan ZHANG, Huiling Lou
  • Patent number: 11387955
    Abstract: In an IEEE 802.11bc wireless system, aggregated data frames are communicated between first and second STA devices by configuring the first STA device to assemble and transmit an A-MPDU frame having multiple A-MPDU subframes characterized by a fixed MPDU start spacing parameter and a fixed maximal MPDU length parameter, where the first STA device is configured with the fixed MPDU start spacing parameter and the fixed maximal MPDU length parameter without negotiating association request and response messages, and by configuring the second STA device to assemble and transmit a BA message comprising a BA bitmap identifying the one or more of the multiple A-MPDU subframes which are not successfully received by the second STA device, where the BA bitmap has a size characterized by a fixed buffer size parameter which is configured at the second STA device without negotiating add BA request (ADDBA Request) request and response messages.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: July 12, 2022
    Assignee: NXP USA, Inc.
    Inventors: Liwen Chu, Rui Cao, Hongyuan Zhang, Huiling Lou
  • Publication number: 20220217027
    Abstract: One example discloses an IEEE 802.11 compliant wireless communications device, including: a processor configured to generate a hybrid-physical protocol data unit (hybrid-PPDU) that includes a set of sub-PPDUs; a first sub-PPDU in the set of sub-PPDUs includes a first preamble portion and a first data payload portion; a second sub-PPDU in the set of sub-PPDUs includes a second preamble portion and a second data payload portion; wherein an OFDMA communications signal includes a set of symbol tones divided into a set of resource units (RUs); wherein the processor is configured to map the first sub-PPDU to a first RU within the set of RUs, and map the second sub-PPDU to a second RU within the set of RUs; and wherein the first preamble portion corresponds to a first 802.11 packet format, and the second preamble portion corresponds to a second 802.11 packet format.
    Type: Application
    Filed: February 22, 2021
    Publication date: July 7, 2022
    Inventors: Rui Cao, Liwen Chu, Young Hoon Kwon, Hongyuan Zhang, SUDHIR SRINIVASA
  • Patent number: 11382101
    Abstract: A communication device generates a first packet to include a first indication of one or more first frequency subchannels in a first frequency segment that will be utilized to transmit the first packet. The communication device also generates a second packet to include a second indication of one or more second frequency subchannels in a second frequency segment that will be utilized to transmit the second packet. The communication device simultaneously transmits the first packet via the first frequency segment and the second packet via the second frequency segment.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: July 5, 2022
    Assignee: Marvell Asia Pte Ltd
    Inventors: Liwen Chu, Hongyuan Zhang, Hui-Ling Lou
  • Patent number: 11382035
    Abstract: Aspects of the present disclosure involve negotiating a TWT agreement by communicating which links, of a multi-link system as may be used in WiFi communications, are to be used for negotiating the TWT agreement. This communication may be accomplished, for example, by using fields of the MAC header, individual TWT parameter set, or broadcast TWT parameter set.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: July 5, 2022
    Assignee: NXP USA, Inc.
    Inventors: Young Hoon Kwon, Liwen Chu, Hongyuan Zhang, Huiling Lou
  • Patent number: 11382132
    Abstract: A communication device associated with a physical access point (AP) receives a physical layer (PHY) data unit having a PHY preamble. The communication device determines a value of a basic service set (BSS) color identifier in the PHY preamble, and performs a clear channel assessment (CCA) procedure to determine whether the communication device can perform a spatial reuse transmission during reception of the PHY data unit, including: determining whether the BSS color identifier is a color value corresponding to all of multiple virtual APs implemented by the physical AP, and selectively determining whether the communication device can perform the spatial reuse transmission during reception of the PHY data unit as a function of the determination of whether the BSS color identifier is the color value corresponding to all of the multiple virtual APs implemented by the physical AP.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: July 5, 2022
    Assignee: Marvell Asia Pte Ltd
    Inventors: Liwen Chu, Lei Wang, Hongyuan Zhang, Jinjing Jiang, Hui-Ling Lou
  • Patent number: 11375577
    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 detect an error of a previous scheduled transmission of data units from the apparatus to another apparatus. The other apparatus provides scheduled resources for transmission between the two apparatuses. Further, the processing circuit is configured to determine resources that are scheduled by the other apparatus for the apparatus to perform retransmission, and provide one or more of the data units in the previous scheduled transmission to the transceiver for retransmission using the scheduled resources.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: June 28, 2022
    Assignee: NXP USA, INC.
    Inventors: Lei Wang, Liwen Chu, Jinjin Jiang, Hongyuan Zhang, Hui-Ling Lou
  • Patent number: 11374698
    Abstract: A wireless communication device generates physical layer (PHY) protocol service data units (PSDUs), and, in response to determining that the PHY data unit is to be transmitted according to a HARQ process, generates HARQ coding units of a common length, each of the HARQ coding units including a respective set of one or more PSDUs, and individually encodes the HARQ coding units. The wireless communication device also generates a HARQ signal field to the included in a PHY preamble of the PHY data unit. The HARQ signal field includes i) a common information subfield to indicate one or more parameters that commonly apply to each of at least some of the one or more HARQ coding units and ii) a respective HARQ coding unit information subfield for each of the HARQ coding units to indicate one or more parameters that apply to only the corresponding HARQ coding unit.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: June 28, 2022
    Assignee: Marvell Asia Pte Ltd
    Inventors: Yan Zhang, Liwen Chu, Rui Cao, Hongyuan Zhang
  • Patent number: 11372073
    Abstract: A first communication device transmits a first physical layer protocol data units (PPDU) that includes a first null data packet announcement (NDPA) frame as part of a first ranging measurement exchange. The first communication device transmits a first null data packet (NDP) as part of the first ranging measurement exchange, and records a transmit time of the first NDP. The first communication device determines whether a second NDP was received correctly from a second communication device as part of the first ranging measurement exchange. In response to determining that the second NDP was not received correctly, the first communication device commences a second ranging measurement exchange, including transmitting a second PPDU that includes a second NDPA frame as part of the second ranging measurement exchange.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: June 28, 2022
    Assignee: NXP USA, INC.
    Inventors: Liwen Chu, Hongyuan Zhang, Hui-ling Lou
  • Patent number: 11363657
    Abstract: A first communication device generates a first data unit, for transmission in a first channel segment of a communication channel, to include a first medium access control (MAC) address utilized by the first communication device for operation in the first channel segment of the communication channel. The first communication device generates a second data unit, for transmission in a second channel segment of the communication channel, to include a second MAC address, different from the first MAC address, utilized by the first communication device for operation in the second channel segment of the communication channel. The first channel segment and the second channel segment are non-overlapping frequency segments of the communication channel. The first communication device transmits the first data unit and the second data unit in, respectively, the first channel segment and the second channel segment, to one or more second communication devices.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: June 14, 2022
    Assignee: Marvell Asia Pte Ltd
    Inventors: Liwen Chu, Hongyuan Zhang, Hui-Ling Lou
  • Patent number: 11357066
    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: Grant
    Filed: August 28, 2020
    Date of Patent: June 7, 2022
    Assignee: NXP USA, Inc.
    Inventors: Liwen Chu, Rui Cao, Hongyuan Zhang, Huiling Lou
  • Publication number: 20220174536
    Abstract: Various embodiments relate to a method for a non simultaneous transmit and receive (NSTR) soft access point (AP) multi-link device (MLD) negotiating a traffic identifier (TID)-to-link mapping with a non-AP MLD, including: transmitting, by the NSTR soft AP MLD, a first frame that includes information on a first group of links that the NSTR soft AP MLD proposes to map to a first TID for the non-AP MLD, wherein the first group of links includes a first link from a first set of links, wherein the first set of links is a set of links on which APs affiliated with the soft AP MLD operates and non-EHT STAs or single link STAs can associate with the APs; receiving, by the NSTR soft AP MLD, a second frame that includes an indication that the non-AP MLD agrees with the NSTR soft AP MLD's proposal on mapping of the first TID to the first group of links; determining, by the NSTR soft AP MLD, that traffic to the non-AP MLD has a first the first TID that is mapped to the first group of links; and transmitting, by the NSTR s
    Type: Application
    Filed: November 30, 2021
    Publication date: June 2, 2022
    Inventors: Young Hoon KWON, Liwen Chu, Hongyuan Zhang
  • Publication number: 20220174675
    Abstract: A first data unit is transmitted which indicates to a remote device to transmit a second data unit. The first data unit comprises an indication to transmit a second data unit. The first data unit comprises a value which indicates that the remote device is to transmit the second data unit and does not indicate a protocol which defines a format of the second data unit. The protocol which defines the format of the second data unit is based on a protocol which defines a format of the first data unit. The second data unit is received from the remote device in response to the transmission of the first data unit.
    Type: Application
    Filed: November 30, 2021
    Publication date: June 2, 2022
    Inventors: Liwen Chu, Rui Cao, Young Hoon Kwon, Hongyuan Zhang, Huiling Lou