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).

  • Publication number: 20230276517
    Abstract: A plurality of different medium access control (MAC) addresses are assigned to a plurality of virtual access point (AP) multi-link devices (MLDs) that are implemented within a physical AP MLD such that each of the plurality of virtual AP MLDs is assigned a respective MAC address of the plurality of different MAC addresses. Wireless communications are then established with one or more stations (STAs) over a plurality of links.
    Type: Application
    Filed: May 4, 2023
    Publication date: August 31, 2023
    Inventors: Yongho Seok, Kai Ying Lu, Gabor Bajko, James Chih-Shi Yee
  • Publication number: 20230269592
    Abstract: An apparatus implemented in a master access point (AP) selects at least one basic service set (BSS) from one or more neighbor BSSs to form a spatial reuse group (SRG). The apparatus then performs coordinated spatial reuse (CSR) in the SRG with a set of overlapping basic service set (OBSS) power detection (PD) parameters.
    Type: Application
    Filed: April 22, 2023
    Publication date: August 24, 2023
    Inventors: James June-Ming Wang, Chung-Ta Ku, Gabor Bajko, Gary A. Anwyl, Shuling Feng, Jianhan Liu, Yongho Seok, Po-Yuen Cheng, James Chih-Shi Yee, Thomas Edward Pare, JR.
  • Patent number: 11736236
    Abstract: Embodiments of the present invention provide a method and apparatus for hybrid ARQ acknowledgement and retransmission requests for decoding failed MPDUs of an A-MPDU received by an STA. The source address and receiver address of a failed MPDU can be verified according to a MAC header CRC that can be included in an A-Control frame, for example. For verifying the source address and the receiver address in MAC header, according to some embodiments, the MAC header CRC is jointly calculated over the first two octets of the MPDU delimiter of an A-MPDU subframe. Moreover, a Hybrid ARQ frame is defined to include Block Ack Bitmap subfield representing the received status of a plurality of MPDUs according to starting sequence control number, for example.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: August 22, 2023
    Assignee: Mediatek Singapore PTE. LTD.
    Inventors: Yongho Seok, Jianhan Liu, James Chih-Shi Yee, Thomas Edward Pare, Jr.
  • Patent number: 11737062
    Abstract: A device obtains a transmission opportunity (TXOP) in a wideband operating bandwidth comprising a primary channel and a plurality of non-primary channels. The device initiates a frame exchange to reserve the TXOP for TXOP sharing. The device also performs a data transmission within the TXOP on one or more of the plurality of non-primary channels. The device then shares the primary channel with a basic service set (BSS) after the frame exchange.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: August 22, 2023
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Kai Ying Lu, Yongho Seok, Chao-Chun Wang, James Chih-Shi Yee
  • Publication number: 20230261699
    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.
    Type: Application
    Filed: April 24, 2023
    Publication date: August 17, 2023
    Inventors: Yongho Seok, Jianhan Liu, James Chih-Shi YEE, Thomas Edward Pare, JR.
  • Publication number: 20230262553
    Abstract: Switching operations are described that provide greater reliability for multilink operations between an access point multilink device (AP MLD) and a non-AP MLD in a wireless communications network. The AP MLD announces that the AP MLD switches one of the multilinks necessary for the multilink operation. The non-AP MLD determines whether an AP operating on a switching link has resumed basic service set (BSS) operation on a target channel.
    Type: Application
    Filed: February 15, 2023
    Publication date: August 17, 2023
    Applicant: MediaTek Singapore Pte. Ltd.
    Inventors: Kai Ying LU, Yongho SEOK, James Chih-Shi YEE, Yonggang FANG
  • Publication number: 20230262822
    Abstract: Switching operations are described that provide greater reliability for multilink operations between an access point multilink device (AP MLD) and a non-AP MLD in a wireless communications network. The AP MLD announces that the AP MLD switches one of the multilinks necessary for the multilink operation. The non-AP MLD determines whether an AP operating on a switching link has resumed basic service set (BSS) operation on a target channel.
    Type: Application
    Filed: January 31, 2023
    Publication date: August 17, 2023
    Applicant: MediaTek Singapore Pte. Ltd.
    Inventors: Kai Ying LU, Yongho SEOK, James Chih-Shi YEE, Yonggang FANG
  • Publication number: 20230261782
    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. None of the first frame and the second frame carries indication of operation mode parameter change that specifies the use of the second setting, and the use of the second setting is indicated by transmission of the second frame.
    Type: Application
    Filed: April 19, 2023
    Publication date: August 17, 2023
    Applicant: Midiatek Inc.
    Inventors: Chien-Fang Hsu, Cheng-Yi Chang, Hung-Tao Hsieh, Yongho Seok
  • Publication number: 20230262603
    Abstract: A first multi-link device (MLD) enables an enhanced multi-link single-radio (EMLSR) mode and establishes concurrent target wake time (TWT) agreements with a second MLD on multiple links, including at least a first link and a second link of a plurality of links. In establishing the concurrent TWT agreements, a first station (STA) affiliated with the first MLD transmits a TWT request to a first peer STA affiliated with the second MLD, the TWT request containing a TWT element that comprises a Link Identifier (ID) Bitmap subfield indicating the multiple links on which the concurrent TWT agreements are requested to be established. In response, the first STA receives a TWT response from the first peer STA, the TWT response containing another TWT element that comprises another Link ID Bitmap subfield indicating the multiple links on which the concurrent TWT agreements are agreed to be established.
    Type: Application
    Filed: February 13, 2023
    Publication date: August 17, 2023
    Inventors: Yongho Seok, James Chih-Shi Yee
  • Patent number: 11729666
    Abstract: Embodiments of the present invention provide a method and apparatus for enhanced data retransmission based on log-likelihood ratio (LLR) combining in WLAN. According to some embodiments, packets can be retransmitted using a modified transmission scheme. Codewords are associated with cyclic redundancy checks (CRCs) for detecting errors, and a subsequent packet is received that includes data that can be used to correct the error. For example, each packet can be encoded for both error detection and correction, and the retransmission mechanism can be adapted to the error rate. The retransmission scheme is improved by utilizing an LLR combining scheme, transmit diversity, and modified ACK methods.
    Type: Grant
    Filed: January 5, 2022
    Date of Patent: August 15, 2023
    Assignee: Mediatek Singapore PTE. LTD.
    Inventors: Jianhan Liu, Yongho Seok, Chung-ta Ku, Thomas Edward Pare, Jr.
  • Publication number: 20230254909
    Abstract: A first multi-link device (MLD) determines that there is an overlap between reception of one or more frames from a second MLD on a first link of a plurality of enhanced multi-link single-radio (EMLSR) links and a frame exchange with the second MLD on a second link of the plurality of EMLSR links in an event that the frame exchange is started upon either: (i) expiration of a backoff timer regarding the second link or (ii) receiving a soliciting frame regarding the second link. In response to the determining, the first MLD refrains from either: (i) initiating the frame exchange on the second link upon the expiration of the backoff timer (e.g., by deferring the frame exchange to a later time) responsive to the expiration of the backoff timer regarding the second link or (ii) transmitting a solicited frame on the second link responsive to receiving the soliciting frame.
    Type: Application
    Filed: February 6, 2023
    Publication date: August 10, 2023
    Inventors: Yongho Seok, James Chih-Shi Yee
  • Patent number: 11723070
    Abstract: System and method of using an AP to individually controlling RTS/CTS duration thresholds for multiple STAs in a WLAN. In response to a STA's association request, the AP determines a duration threshold specific to the STA and encloses this information in an association request response for transmission to the STA. By using a broadcast frame, the AP may instruct multiple STAs to uniformly update their stored duration thresholds. For example, if the duration threshold field in the beacon frame is set to 0, the multiple STAs preserve their current duration thresholds; if the field is set to a non-zero value less than 1023, the multiple STAs all update their duration thresholds to the non-zero value; if this field is set to 1023, the multiple STAs disable the RTS/CTS transmissions. Based on a current threshold and pertinent policies, an STA can decide whether to initiate an RTS/CTS transmission sequence.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: August 8, 2023
    Assignee: Mediatek Singapore PTE. LTD
    Inventors: Yongho Seok, Chao-Chun Wang, James Chih-Shi Yee
  • Patent number: 11722894
    Abstract: Embodiments of the present invention provide methods and devices for transmitting or receiving beacon frames and probe response frames that include MAC addresses of a multi-link device (MLD) operating on multiple links in a wireless network. For example, the beacon frames and probe response frames can include an MLD MAC address that uniquely identifies an AP MLD in a wireless network, and can optionally include one or more WM MAC addresses of STAs of the AP MLD. The MAC addresses can be used to by wireless devices (e.g., STA MLDs) to connect to and associate with the AP MLD, and can be used to generate a password element used during authentication between wireless devices.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: August 8, 2023
    Assignee: Mediatek Singapore PTE. LTD.
    Inventors: Gabor Bajko, Yongho Seok, James Chih-Shi Yee, Kai Ying Lu
  • Patent number: 11716613
    Abstract: An encryption mechanism used on cooperative multi-band wireless STA architecture that enables full duplex operations. In encrypting a frame, an AAD can be constructed by using a selected MAC address, which may not be associated with a band to be used for transmitting the frame in an upcoming TXOP. An STA that supports simultaneous transmission in a multi-band operation uses the same MAC address to encrypt the frames to be transmitted on different bands. An AAD is constructed by using a same MAC address corresponding to one of the transceivers. A transmit STA may specify band information used for encryption in the MAC header, which serves to signal the receive STA to decrypt the frame by using the proper information.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: August 1, 2023
    Assignee: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: Yongho Seok, Jianhan Liu, James Chih-Shi Yee, Gabor Bajko
  • Patent number: 11690107
    Abstract: Embodiments of the present invention are drawn to a computer-implemented process for automatically synchronizing TXOPs for a multi-link device (MLD) to improve wireless network performance and prevent IDC. The novel process can be performed by a multi-link device performing a multi-link operation, and the multi-link device can act as a wireless access point or a wireless station. Independent EDCA channel access can be performed at the multi-link device on a first wireless link and a second wireless link, and a back-off counter for a first wireless STA and a back-off counter for a second wireless STA are set according to the independent EDCA channel access. A TXOP is synchronously obtained on the first wireless link and the second wireless link responsive to the back-off counters expiring, and a multi-link operation is performed at the MLD using the first wireless link and the second wireless link during the TXOP.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: June 27, 2023
    Assignee: MEDIATEK SINGAPORE PTE. LTD
    Inventors: Yongho Seok, Weisung Tsao, James Chih-Shi Yee, Po-Yuen Cheng
  • Publication number: 20230199848
    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: Application
    Filed: February 23, 2023
    Publication date: June 22, 2023
    Inventors: Kai Ying Lu, Yongho Seok, James Chih-Shi Yee, Chao-Chun Wang, Jianhan Liu
  • Publication number: 20230188266
    Abstract: One wireless communication method includes: receiving a request action frame; and in response to the request action frame, generating and sending an acknowledgement (ACK) control frame that is configured to serve as a response action frame for the request action frame, wherein the response action frame is not solicited by the request action frame. Another wireless communication method includes: receiving a request action frame; and in response to the request action frame, generating and sending an acknowledgement (ACK) control frame and a time-constrained response action frame following the ACK control frame, wherein the time-constrained response action frame is solicited by the request action frame.
    Type: Application
    Filed: November 24, 2022
    Publication date: June 15, 2023
    Applicant: MEDIATEK INC.
    Inventors: Chien-Fang Hsu, Cheng-Ying Wu, Chao-Wen Chou, Yongho Seok
  • Patent number: 11678326
    Abstract: A first access point (AP) receives a second spatial reuse parameter (SRP) related to a second AP from the second AP. The first AP transmits the second SRP to at least a first communication device associated with the first apparatus. The first AP then receives a uplink (UL) transmission from the first communication device with a transmit power of the UL transmission controlled based on the second SRP.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: June 13, 2023
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: James June-Ming Wang, Yongho Seok, James Chih-Shi Yee, Jianhan Liu, Thomas Edward Pare, Jr.
  • Patent number: 11672039
    Abstract: A plurality of different medium access control (MAC) addresses are assigned to a plurality of virtual access point (AP) multi-link devices (MLDs) that are implemented within a physical AP MLD such that each of the plurality of virtual AP MLDs is assigned a respective MAC address of the plurality of different MAC addresses. Wireless communications are then established with one or more stations (STAs) over a plurality of links.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: June 6, 2023
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Yongho Seok, Kai Ying Lu, Gabor Bajko, James Chih-Shi Yee
  • Patent number: 11671837
    Abstract: An apparatus implemented in a master access point (AP) selects at least one basic service set (BSS) from one or more neighbor BSSs to form a spatial reuse group (SRG). The apparatus then performs coordinated spatial reuse (CSR) in the SRG with a set of overlapping basic service set (OBSS) power detection (PD) parameters.
    Type: Grant
    Filed: October 8, 2020
    Date of Patent: June 6, 2023
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: James June-Ming Wang, Chung-Ta Ku, Gabor Bajko, Gary A. Anwyl, Shuling Feng, Jianhan Liu, Yongho Seok, Po-Yuen Cheng, James Chih-Shi Yee, Thomas Edward Pare, Jr.