Patents by Inventor Yongho Seok

Yongho Seok 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: 11665588
    Abstract: Embodiments of the present invention transmit fragmented frames using a sequence control field in a MAC header that includes an extended 15-bit sequence number for tracking the order of frames, and a 1-bit PF field that indicates the position of a fragmented frame in conjunction with a 1-bit MF field carried in a frame control subfield of the MAC header. The fragmented frames can be received by a wireless device and defragmented according to the MF field, the PF field, and the sequence control number. The frames can be discarded if any are not received successfully.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: May 30, 2023
    Assignee: MEDIATEK SINGAPORE PTE. LTD
    Inventors: Yongho Seok, Kai Ying Lu, James Chih-Shi Yee
  • Patent number: 11658768
    Abstract: A multi-link device (MLD) includes a transmit (TX) circuit, a receive (RX) circuit, and a control circuit. The control circuit controls the RX circuit to receive a first frame under an operation mode parameter with a first setting, control the TX circuit to transmit a second frame responsive to the first frame under the operation mode parameter with the first setting, and after the second frame is transmitted, controls the RX circuit to receive at least one physical layer protocol data unit (PPDU) under the operation mode parameter with a second setting, wherein the second setting is different from the first setting.
    Type: Grant
    Filed: July 5, 2021
    Date of Patent: May 23, 2023
    Assignee: MEDIATEK INC.
    Inventors: Chien-Fang Hsu, Cheng-Yi Chang, Hung-Tao Hsieh, Yongho Seok
  • Patent number: 11659581
    Abstract: Embodiments of the present invention provide a method and device for multi-AP beamforming (e.g., nulling) and spatial reuse to mitigate interference and improve the performance of MAP wireless networks. According to one embodiment, multiple APs agree to collaborate in multi-AP beamforming, transmissions of received PDDUs are measured to determine interference information, the APS generate interference maps, and the APs perform joint and Multi-AP beamforming in a first and second BSS to avoid/mitigate interference of the MAP wireless network. An RTS and CTS frame exchange sequence can be performed prior to Multi-AP beamforming between BSSs using a flag/indicator in the RTS frame to indicate coordinated transmission, or an UL trigger frame can be used to indicate a coordinated UL transmission.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: May 23, 2023
    Assignee: Mediatek Singapore PTE. LTD.
    Inventors: James June-Ming Wang, Yongho Seok, James Chih-Shi Yee, Jianhan Liu, Thomas Edward Pare, Jr.
  • Publication number: 20230156864
    Abstract: A physical protocol data unit (PPDU) transmission method includes: setting parameters of each of a plurality of links for enabling the plurality of links to have different capacity for PPDU transmission, wherein parameters of one link are different from parameters of another link, and highest capacity supported by the one link is higher than highest capacity supported by the another link; aligning an ending time instant of transmission of a first PPDU transmitted via the one link with an ending time instant of transmission of a second PPDU transmitted via the another link through setting a content that is carried by the first PPDU transmitted via the one link; and transmitting PPDUs via the plurality of links, wherein one PPDU is transmitted via each of the plurality of links, and the PPDUs include the first PPDU and the second PPDU.
    Type: Application
    Filed: January 18, 2023
    Publication date: May 18, 2023
    Applicant: MEDIATEK INC.
    Inventors: Chien-Fang Hsu, Yongho Seok, James Chih-Shi Yee
  • Publication number: 20230155793
    Abstract: A station includes one or more memories and processors, configured to cause the processors to generate a first frame that includes a plurality of data units, where each of the plurality of data units is associated with traffic information, transmit the first frame to a wireless device in the wireless network, and receive a second frame that includes one or more per-station information fields. Each of the per-station information fields includes a first subfield that is set to a first predetermined value and a second subfield. The first subfield indicates whether the plurality of data units were received successfully and the first predetermined value indicates successful reception of all of the plurality of data units carried in the first frame that has elicited the second frame. The second subfield indicates whether the plurality of data units were received successfully when they are associated with different types of traffic information.
    Type: Application
    Filed: January 13, 2023
    Publication date: May 18, 2023
    Applicant: Atlas Global Technologies LLC
    Inventor: Yongho SEOK
  • Publication number: 20230141728
    Abstract: Embodiments of the present invention prevent interference caused by the simultaneous transmission and reception of data in a constrained multi-link operation of a wireless network. According to one embodiment, a frame from a first affiliated AP of a multi-band wireless AP is transmitted for receipt by an STA, and a second affiliated wireless AP of the multi-band wireless AP is scheduled to transmit a trigger frame to the wireless STA over a second wireless link. Accordingly, the trigger frame is transmitted from the second affiliated wireless AP to the wireless STA over the second wireless link, and the response frame solicited by the frame is scheduled for transmission after the predetermined value has expired following an end of the PPDUs containing the trigger frame.
    Type: Application
    Filed: January 3, 2023
    Publication date: May 11, 2023
    Inventors: Yongho Seok, James Chih-Shi Yee
  • Publication number: 20230141798
    Abstract: A wireless device includes one or more memories and one or more processors, configured to cause the wireless device to process a downlink frame including a first address field that is eliciting a response from a plurality of stations, generate an uplink frame including a second address field in response to the downlink frame. The second address field is set to a value of the first address field when the downlink frame is of a first type or a value of an address associated with an access point when the downlink frame is of a second type. The uplink frame is transmitted on a resource allocated by resource allocation information included in the downlink frame for an uplink multi-user transmission. The plurality of stations simultaneously transmits uplink frames in response to the first type of downlink frame and the plurality of stations simultaneously transmits uplink data frames.
    Type: Application
    Filed: January 13, 2023
    Publication date: May 11, 2023
    Applicant: Atlas Global Technologies LLC
    Inventor: Yongho SEOK
  • Patent number: 11646767
    Abstract: Embodiments of the present invention provide an apparatus and method for a MAP wireless network that includes a collaborative channel sounding measurement phase to determine channel state information between devices (e.g., the channel state between an STA and a collaborative AP) for efficient configuration of the MAP wireless network and to improve the performance of the MAP wireless networks. The wireless AP and wireless STAs associated with the collaborative APs can simultaneously transmit by applying collaborative beamforming where the interferences between channels nullify each other (e.g., nulling), and the beamforming is performed based on a sounding phase performed by the collaborative APs. The sounding protocol can include a collaborative sounding measurement phase and a collaborative sounding feedback report phase, using Null Data Packets (NDPs), for example, as described herein according to embodiments of the present invention.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: May 9, 2023
    Assignee: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: Yongho Seok, Jianhan Liu, James Chih-Shi Yee, Thomas Edward Pare, Jr.
  • Publication number: 20230131549
    Abstract: A network device is provided. The network device includes one or more memories and one or more processors coupled to the one or more memories. The one or more processors are configured receive a DL MU PPDU, decode a data frame including a media access control (MAC) header from the DL MU PPDU, determine whether an acknowledgement (ACK) policy indicated in the MAC header signals a trigger-based immediate acknowledgement policy, and determine whether a trigger indication for an uplink (UL) MU transmission has been obtained from a payload of a data frame. Responsive to the processor determines that the trigger indication has not been obtained, the processor is configured to not transmit an immediate acknowledgement to the access point. In response to the trigger indication has not been obtained but the station has obtained a transmission opportunity, the station returns an ACK/Block ACK frame in an unsolicited manner.
    Type: Application
    Filed: December 23, 2022
    Publication date: April 27, 2023
    Applicant: Atlas Global Technologies LLC
    Inventor: Yongho SEOK
  • Publication number: 20230113355
    Abstract: A first access point (AP), which is affiliated with a AP multi-link device (MLD) operating on a non-simultaneous-transmission-and-reception (NSTR) link pair comprising a primary link and a non-primary link, generates a beacon frame or probe response frame. The first AP then transmits the beacon frame or probe response frame on a link that is not the non-primary link to indicate that a second AP affiliated with the NSTR AP MLD and operating on the non-primary link is unavailable, quiet or disabled.
    Type: Application
    Filed: September 20, 2022
    Publication date: April 13, 2023
    Inventors: Kai Ying Lu, James Chih-Shi Yee, Yongho Seok
  • Publication number: 20230103988
    Abstract: A station (STA) affiliated with a non-simultaneous-transmission-and-reception (NSTR) multi-link device (MLD) obtains a transmission opportunity (TXOP) on a first link of an NSTR link pair as a TXOP initiator while a medium synchronization delay timer of the STA is non-zero. STA determines that an intended TXOP responder has lost medium synchronization. The STA then transmits a control frame as an initial frame in the TXOP to the intended TXOP responder on the first link responsive to the determining.
    Type: Application
    Filed: September 12, 2022
    Publication date: April 6, 2023
    Inventors: Kai Ying Lu, James Chih-Shi Yee, Yongho Seok
  • Patent number: 11612002
    Abstract: Embodiments of the present invention provide systems and methods for synchronous independent channel access in a wireless network. The synchronous independent channel access can be performed by a wireless station having multiple transceivers for simultaneous communication over multiple wireless bands. A wireless station can connect wirelessly to a wireless access point to access a first primary wireless band during a transmission opportunity, and can use early access on a second primary wireless band without receiving a transmission opportunity. The transmission and reception of data frames over the different primary channels are synchronized to prevent or mitigate inter-channel interference. According to some embodiments, the channels are synchronized using back-off procedures and/or padding to align the ending time of transmitted and received data frames, for example.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: March 21, 2023
    Assignee: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: Yongho Seok, Jianhan Liu, James Chih-Shi Yee, Thomas Edward Pare, Jr., Chung-Ta Ku, Jr., Weisung Tsao, Po-Yuen Cheng
  • Patent number: 11611992
    Abstract: A first station (STA) and a second STA perform bandwidth negotiation with a bandwidth extension indication. Then the first STA and the second STA communicate wirelessly according to the bandwidth negotiation.
    Type: Grant
    Filed: June 17, 2021
    Date of Patent: March 21, 2023
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Kai Ying Lu, Yongho Seok, James Chih-Shi Yee, Chao-Chun Wang, Jianhan Liu
  • Patent number: 11601885
    Abstract: Systems and methods of transmitting a multi-user (MU) wake-up packet in FDMA. In the wake-up setup stage, an STA informs the AP that it can resolve an MU wake-up packet transmitted in FDMA. Accordingly, AP allocates a frequency channel to the STA in a WUR setup response frame which indicates a channel offset relative to the primary channel. Moreover, if a WUR channel allocated to an STA is inaccessible or there is on pending wake-up signal for the STA, no wake-up signal is included in the MU wake-up packet while any other accessible allocated channels may still be utilized for transmitting the scheduled wake-up signals. During such a transmission, an inaccessible channel may be punctured; and an accessible channel having no pending wake-up signal may be used to carry an invalid wake-up signal or a legacy preamble followed with no wake-up signal.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: March 7, 2023
    Assignee: MEDIATEK SINGAPORE PTE. LTD
    Inventors: Yongho Seok, Jianhan Liu, James Chih-Shi Yee, Thomas Edward Pare, Jr.
  • Patent number: 11601251
    Abstract: In wireless communications for multi-users, a station may generate a first frame and transmit the first frame to an access point. The first frame may include media access control protocol data units (MPDUs). Each MPDU is associated with a traffic identifier (TID). In one aspect, a TID of one of the MPDUs is different from a TID of another one of the MPDUs. In response to receiving the first frame, the access point may generate a second frame based on the first frame. The second frame may include an indication that all of the MPDUs having TIDs are received. The access point may transmit the second frame to the station. Other methods, apparatus, and computer-readable media are also disclosed.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: March 7, 2023
    Assignee: Atlas Global Technologies LLC
    Inventor: Yongho Seok
  • Patent number: 11595884
    Abstract: Embodiments of the present invention provide apparatus and methods for announcing a BSS parameter updates for a wireless link that can be received by a MLD even when the MLD is not listening for parameter updates on that specific link by employing a different wireless link to broadcast, receive, and/or signal the BSS parameter update. An MLD can update the BSS parameters of the wireless link and use the wireless link according to the updated BSS parameters (e.g., after performing a channel switch). According to some embodiments, an STA within an AP MLD transmits an information elements (IE) including BSS parameter updates associated with a different STA (operating on a different wireless link) within the AP MLD.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: February 28, 2023
    Assignee: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: Yongho Seok, Kai Ying Lu, James Chih-Shi Yee
  • Patent number: 11596024
    Abstract: A physical protocol data unit (PPDU) transmission method includes aligning parameters of a plurality of links for constraining the plurality of links to have same capacity for PPDU transmission, and transmitting PPDUs via the plurality of links. Highest capacity supported by one of the plurality of links is different from highest capacity supported by another of the plurality of links. Each of the PPDUs is generated and transmitted under the same parameters. Ending time instants of transmission of the PPDUs are aligned.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: February 28, 2023
    Assignee: MEDIATEK INC.
    Inventors: Chien-Fang Hsu, Yongho Seok, James Chih-Shi Yee
  • Publication number: 20230048964
    Abstract: Embodiments of the present invention provide a method and apparatus for coordinated multi-AP channel access in a wireless network. A wireless AP that obtains a transmission opportunity (TXOP) (a “coordinator AP”) can grant one or more STAs or APs under control of the coordinator AP the use of some of the bandwidth granted by the TXOP. The STAs or APs that are granted the use of the bandwidth are referred to as “coordinated APs.” Thereafter, a coordinator AP or a coordinated AP can create a new basic service set (BSS) of devices for coordinating data transmissions. For example, the coordinated AP may serve as a relay, where the coordinated AP services devices in a new BSS by sending and receiving data with a coordinator AP in a different BSS.
    Type: Application
    Filed: November 1, 2022
    Publication date: February 16, 2023
    Inventors: Yongho Seok, Jianhan Liu, James Chih-Shi Yee, James June-Ming Wang, Thomas Edward Pare, JR., Shihchieh Lee
  • Patent number: 11581927
    Abstract: In wireless communications for multi-users, a station may receive a trigger frame including a transmitter address field. When the trigger frame is a multi-user request-to-send (MU-RTS) frame eliciting clear-to-send (CTS) frames from a plurality of stations, the station transmit a CTS frame including a first receiver address field in response to the trigger frame. The first receiver address field may be set equal to the transmitter address field. When the trigger frame elicits data frames from a plurality of stations, the station transmit a data frame including a second receiver address field in response to the trigger frame. The second receiver address field may be set to a destination address. Other methods, apparatus, and computer-readable media are also disclosed.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: February 14, 2023
    Assignee: Atlas Global Technologies LLC
    Inventor: Yongho Seok
  • Publication number: 20230040899
    Abstract: Embodiments of the present invention provide a punctured preamble enabling wireless devices to efficiently use a channel (e.g., an 80 or 160 MHz channel) where a primary service is operating. A Wideband Channel Access Mechanism for 20 MHz/80 MHz operating STAs is provided so that a 20 MHz/80 MHz operating STA can dynamically move to a secondary channel to improve wireless performance of the STA. An AP coordinates the operating channel switch of the 20 MHz/80 MHz operating STA. An EHT cooperative multi-band operation can be applied to the preamble punctured PPDU for simultaneous multi-band operation.
    Type: Application
    Filed: October 19, 2022
    Publication date: February 9, 2023
    Inventors: Yongho SEOK, Jianhan LIU, Chao-Chun WANG, James Chih-Shi YEE