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: 20240064834
    Abstract: Various techniques and schemes pertaining to ultra-high reliability (UHR) multi-link direct link operation in wireless communications are described. A first non-access point (non-AP) multi-link device (MLD) establishes multiple links as multi-link direct links with a second non-AP MLD. The first non-AP MLD also maintains a multi-link association with an AP MLD. The first non-AP MLD communicates with the second non-AP MLD over one or more links of the multiple links in a multi-link direct link operation.
    Type: Application
    Filed: August 17, 2023
    Publication date: February 22, 2024
    Inventors: Yongho Seok, James Chih-Shi Yee
  • Patent number: 11909469
    Abstract: Methods and apparatus for transmission opportunity limits, backoff procedures, uplink random access related to uplink multi-user transmission in a High Efficiency WLAN (HEW) are described. An embodiment is a method for performing a frame exchange sequence including an uplink multi-user (UL MU) transmission by an access point (AP) in a wireless local area, the method including acquiring a transmission opportunity (TXOP) for initiating the frame exchange sequence; determining if a time required for the frame exchange sequence not including a control response frame exceeds a TXOP limit; and transmitting a trigger frame to one or more stations (STAs) when the time required for the frame exchange sequence not including the control response frame does not exceed the TXOP limit.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: February 20, 2024
    Assignee: Atlas Global Technologies LLC
    Inventor: Yongho Seok
  • Patent number: 11889435
    Abstract: A first apparatus communicates with a second apparatus via a first link in a first frequency band and via a second link in a second frequency band different than the first frequency band by performing operations. For example, the first apparatus performs an independent enhanced distributed channel access (EDCA) on each of the first link and the second link. Then, the first apparatus obtains a transmit opportunity (TXOP). Next, the first apparatus synchronizes a starting time and/or an ending time of a transmission and a reception on the first link and the second link to avoid causing an in-device coexistence (IDC) interference due to the transmission and the reception occurring simultaneously. Alternatively, the first apparatus refrains from transmitting and receiving on the first link and the second link simultaneously to avoid causing the IDC interference.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: January 30, 2024
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Yongho Seok, Jianhan Liu, James Chih-Shi Yee, Thomas Edward Pare, Jr.
  • Patent number: 11882596
    Abstract: Embodiments of the present invention are drawn to electronic systems that perform EHT operations for a wireless network supporting a 160+160 MHz/320 MHz operating mode. RTS/CTS frame exchange sequences and TXOP truncation can be performed using punctured preambles according to subchannels indicated in a bitmap subfield (e.g., an Allowed Bitmap Subfield). Preamble puncturing is supported for EHT PPDUs transmitted to multiple STAs using MU-RTS/MU-CTS frames transmitted in non-HT duplicate PPDUs. Preamble puncturing is also supported for an EHT PPDU transmitted to a single STA. The RTS and CTS frames can be sent in a non-HT duplicate PPDU with preamble puncturing, for example.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: January 23, 2024
    Assignee: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: Yongho Seok, Kai Ying Lu, James Chih-Shi Yee
  • Patent number: 11882625
    Abstract: Embodiments of the present invention are drawn to electronic systems capable of transmitting a group addressed frame that identifies an MLD according to an MLD MAC address. The group addressed frame can include an ARP request, for example, and can be transmitted by an AP MLD responsive to an individually addressed frame transmitted by a non-AP STA MLD associated with the AP MLD. The AP MLD can provide a proxy ARP service for associated non-AP STA MLDs.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: January 23, 2024
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Yongho Seok, Kai Ying Lu, James Chih-Shi Yee
  • Patent number: 11882598
    Abstract: An apparatus (e.g., an access point (AP)) announces to one or more stations (STAs), in a frame, one or more preamble detection (PD) channels in a frequency segment such that each of the one or more STAs monitors a respective one of the one or more PD channels to detect any transmission on the one or more PD channels. The apparatus then wirelessly communicates with at least one of the one or more STAs on one of the one or more PD channels during a transmission opportunity (TXOP).
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: January 23, 2024
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Kai Ying Lu, Yongho Seok, Chao-Chun Wang, Jianhan Liu, James Chih-Shi Yee, Thomas Edward Pare, Jr.
  • Patent number: 11877321
    Abstract: A multi-link device (MLD) monitors each of first and second links in a multi-link operation in wireless communications, with the first link being a primary link and the second link being a secondary link. The MLD obtains a transmission opportunity (TXOP) on one of the first link and the second link as a result of performing a contention-based channel access on the first link and the second link. The MLD checks channel status of the other of the first link and the second link. The MLD then transmits one or more frames on the first link but not on the second link, on the second link but not on the first link, or on both the first link and the second link synchronously, responsive to the channel status of the other link given the TXOP being obtained on the one of the first link and the second link.
    Type: Grant
    Filed: December 25, 2020
    Date of Patent: January 16, 2024
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Kai Ying Lu, Yongho Seok, Weisung Tsao, James Chih-Shi Yee
  • Patent number: 11864227
    Abstract: A device detects a primary channel busy for an operating bandwidth having a plurality of channel segments comprising the primary channel and at least one non-primary channel. In response to detecting the primary channel busy, the device obtains a transmission opportunity (TXOP) through a first non-primary channel of the at least one non-primary channel. Then, the device performs a transmission at least on the first non-primary channel during the TXOP.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: January 2, 2024
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Kai Ying Lu, Jianhan Liu, Chao-Chun Wang, Yongho Seok, Thomas Edward Pare, Jr., James Chih-Shi Yee
  • Patent number: 11832127
    Abstract: A first apparatus generates a first hybrid automatic repeat request (HARQ) packet and a second HARQ packet based at least in part on one or more capabilities of a second apparatus. The first apparatus sequentially transmits the first HARQ packet and the second HARQ packet to the second apparatus. In response, the first apparatus receives a delayed acknowledgement form the second apparatus after transmitting the second HARQ packet.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: November 28, 2023
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Jianhan Liu, Kai Ying Lu, Yongho Seok, Thomas Edward Pare, Jr., Yungping Hsu
  • Patent number: 11825460
    Abstract: A non-access point (non-AP) station (STA) multi-link device (MLD) receives a transmission from an access point (AP) MLD. In response to receiving the transmission, the non-AP STA MLD communicates with the AP MLD using an increased number of spatial streams with multi-link dynamic antenna switching at the non-AP STA MLD.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: November 21, 2023
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Yongho Seok, Hung-Tao Hsieh, Cheng-Yi Chang, James Chih-Shi Yee
  • Patent number: 11812381
    Abstract: Embodiments of the present invention provide a method and apparatus for providing wideband channel access to wireless devices, such as 20 MHz only wireless stations. A trigger frame is transmitted by a wireless AP to a wireless STA over a secondary wireless channel. An HE TB PPDU is received by the wireless AP from the wireless STA over the secondary wireless channel responsive to the trigger frame. The devices can switch operating channels for wireless communication to the secondary wireless channel within an existing TXOP.
    Type: Grant
    Filed: March 22, 2022
    Date of Patent: November 7, 2023
    Assignee: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: Yongho Seok, Chao-Chun Wang, James Chih-Shi Yee
  • Publication number: 20230354022
    Abstract: Embodiments of the present invention provide methods and devices for discovering a multi-link device (MLD) on a wireless network. One exemplary approach includes transmitting a beacon frame including a MAC address of an AP MLD on the wireless network. The AP MLD includes a plurality of STAs operating on a plurality of wireless links and associated with a plurality of wireless MAC addresses. A password element is generated using a preconfigured password and the MAC address of the AP MLD, and authentication is performed using the password element.
    Type: Application
    Filed: July 6, 2023
    Publication date: November 2, 2023
    Inventors: Gabor Bajko, Yongho Seok, James Chih-Shi Yee, Kai Ying Lu
  • Publication number: 20230354015
    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: Application
    Filed: July 10, 2023
    Publication date: November 2, 2023
    Inventors: Yongho SEOK, Jianhan Liu, James Chih-Shi Yee, Gabor Bajko
  • Publication number: 20230344480
    Abstract: Techniques pertaining to multi-link operation (MLO) assisted 60 GHz beamforming training and data transmission in wireless communications are described. An apparatus (e.g., as a 60 GHz-capable MLO station (STA)) performs MLO assisted 60 GHz operations by: (i) performing discovery and association; and (ii) performing either or both of beamforming training and data transmission in a 60 GHz band.
    Type: Application
    Filed: April 18, 2023
    Publication date: October 26, 2023
    Inventors: Jianhan Liu, Shengquan Hu, Yongho Seok, Thomas Edward Pare, JR., Yungping Hsu
  • Publication number: 20230345534
    Abstract: Techniques pertaining to transmission protection with static puncturing in wireless communications are described. An apparatus (e.g., a station (STA)) receives a control frame with bandwidth signaling that is transmitted in a channel width of the control frame including one or more non-punctured non-primary subchannels within the channel width. The apparatus then determines the one or more non-punctured non-primary subchannels within the channel width of the control frame and also determines whether to transmit a response control frame responsive to receiving the control frame. Depending on a result of the determining, the apparatus either refrains from transmission of the response control frame or transmits the response control frame in at least one subchannel within the channel width of the control frame.
    Type: Application
    Filed: April 20, 2023
    Publication date: October 26, 2023
    Inventors: Kai Ying Lu, James Chih-Shi Yee, Yongho Seok
  • Patent number: 11784683
    Abstract: Null Data Packet Sounding for preamble punctured Physical Layer Convergence Procedure Protocol Data Unit (PPDU) for efficient use of a wireless channel bandwidth where a primary service co-exists.
    Type: Grant
    Filed: October 22, 2021
    Date of Patent: October 10, 2023
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Yongho Seok, Jianhan Liu, Chao-Chun Wang, James Chih-Shi Yee
  • Publication number: 20230319923
    Abstract: A first multi-link device (MLD) enables an enhanced multi-link single-radio (EMLSR) mode or an enhanced multi-link multi-radio (EMLMR) mode. A first station (STA) affiliated with the first MLD receives from a second MLD and in a first operating channel of the first STA an initial control frame indicating an allocated resource unit (RU), which is indicated in a Secondary RU Allocation subfield in the initial control frame. A second STA affiliated with the first MLD switches from a second operating channel of the second STA to an allocated channel in which the allocated RU is located. The second STA then receives information from the second MLD on the allocated RU during a transmission opportunity (TXOP).
    Type: Application
    Filed: March 19, 2023
    Publication date: October 5, 2023
    Inventors: Yongho Seok, James Chih-Shi Yee
  • Patent number: 11770853
    Abstract: A method implemented by a station (STA) in a Wireless Local Area Network (WLAN) to disregard a Network Allocation Vector (NAV) maintained by the STA. The method includes receiving a first frame from an Access Point (AP), determining whether the NAV maintained by the STA was previously set using a duration indicated in a second frame that (1) was received by the STA prior to receiving the first frame and (2) originated from the AP, and transmitting a third frame to the AP as an immediate response to the first frame without considering the NAV maintained by the STA when a determination is made that the NAV maintained by the STA was previously set using the duration indicated in the second frame that originated from the AP.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: September 26, 2023
    Assignee: Atlas Global Technologies LLC
    Inventors: Yujin Noh, Yongho Seok
  • Patent number: 11770732
    Abstract: A link condition announcement method is employed by a wireless fidelity (WiFi) multi-link device (MLD), and includes: obtaining information of a traffic condition of each of a plurality of links owned by the WiFi MLD according to traffic statistics of each of the plurality of links, and transmitting the information of the traffic condition of each of the plurality of links to another WiFi MLD that communicates with the WiFi MLD.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: September 26, 2023
    Assignee: MEDIATEK INC.
    Inventors: Chien-Fang Hsu, Yongho Seok, James Chih-Shi Yee
  • Patent number: 11751265
    Abstract: A station (STA) affiliated with a multi-link device (MLD) that belongs to a non-simultaneous-transmission-and-reception (NSTR) link pair receives a trigger frame from an access point (AP). The STA determines whether to respond to the trigger frame. In response to determining to respond to the trigger frame, the STA transmits a trigger-based (TB) physical-layer protocol data unit (PPDU) with at least one restriction.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: September 5, 2023
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Kai Ying Lu, James Chih-Shi Yee, Yongho Seok