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: 10320537
    Abstract: The present invention provides a new downlink frame format to support MU-MIMO and OFDMA, and methods, apparatuses, etc. therefor. In an aspect of the present invention, a method for transmitting data to a plurality of STAs by an AP in a WLAN may include generating a HE-LTF field for the plurality of STAs, and transmitting a PPDU frame to the plurality of STAs, the PPDU frame including the HE-LTF field and data for the plurality of STAs. The data for the plurality of STAs may be transmitted to different STA on each of a plurality of subchannels, and a starting point of the HE-LTF field may be same across the plurality of STAs and an end point of the HE-LTF field may be same across the plurality of STAs.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: June 11, 2019
    Assignee: NEWRACOM, INC.
    Inventor: Yongho Seok
  • Publication number: 20190174410
    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 Target Wakeup Time (TWT) Channel field contains a bitmap indicating a temporary primary channel for using during a TWT Service Period (SP). The temporary primary channel is determined through a negotiation between a requesting STA and a responding STA, and the responding STA assigns resource units (RUs) to the requesting STA according to the temporary primary channel. After the TWT SP, the requesting STA switches back to a primary channel.
    Type: Application
    Filed: December 3, 2018
    Publication date: June 6, 2019
    Inventors: Yongho SEOK, Chao-Chun WANG, James Chih-Shi YEE
  • Patent number: 10305647
    Abstract: The present invention provides a new uplink PPDU frame format to support MU-MIMO and OFDMA, and methods, apparatuses, etc. therefor. In an aspect of the present invention, a method by a STA for transmitting an UL PPDU frame to an AP simultaneously with one or more other STAs in a WLAN may include receiving a frame including a parameter for the PPDU frame from the AP; and participating in UL MU PPDU frame transmission based on the parameter.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: May 28, 2019
    Assignee: NEWRACOM, INC.
    Inventor: Yongho Seok
  • Publication number: 20190149210
    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: Application
    Filed: November 27, 2018
    Publication date: May 16, 2019
    Inventor: Yongho SEOK
  • Publication number: 20190149280
    Abstract: The present disclosure relates to a method and apparatus for beamformed transmission in a wireless local area network. According to one aspect of the present disclosure, a method for transmitting a Physical layer Protocol Data Unit (PPDU) frame to a plurality of stations (STAs) by an Access Point (AP) in a wireless local area network may be provided. The method may include transmitting a SIGNAL field of the PPDU frame, the SIGNAL field including beamforming information indicating whether beamforming is applied to respective data units of the PPDU frame, and transmitting the data units of the PPDU frame, the data units being individually beamformed or not beamformed according to the beamforming information.
    Type: Application
    Filed: December 26, 2018
    Publication date: May 16, 2019
    Inventor: Yongho SEOK
  • Publication number: 20190141749
    Abstract: A data unit (e.g., a physical layer convergence procedure (PLCP) protocol data unit (PPDU)) is detected at a first wireless device that is a member of a basic service set (BSS). The data unit was sent on a channel from a second wireless device that is a member of an overlapping basic service set (OBSS). When the first wireless device ignores the data unit and obtains a transmit opportunity for the channel according to a spatial reuse procedure, then the first wireless device is prohibited from transmitting a frame to a device that is a member of the OBSS during the time interval associated with the transmit opportunity.
    Type: Application
    Filed: November 2, 2018
    Publication date: May 9, 2019
    Inventors: Yongho SEOK, James June-Ming WANG, Chao-Chun WANG, Chih-Shi YEE
  • Publication number: 20190124695
    Abstract: A data unit (e.g., a physical layer convergence procedure (PLCP) protocol data unit (PPDU)) is detected at a first wireless device of a basic service set (BSS). The data unit was sent on a channel from a second wireless device of an overlapping basic service set (OBSS). The data unit is wide-bandwidth, occupying both a primary channel and a secondary channel of the wireless network. The first and second wireless devices are within a same spatial reuse group (SRG). The first wireless device stores the channel bandwidth of the data unit and a receive duration time of the data unit. During the receive duration time of the data unit, a SRG OBSS power density threshold is applied on the secondary channels that are within the channel bandwidth of the data unit, instead of applying a non-SRG OBSS power density threshold on those secondary channels.
    Type: Application
    Filed: October 22, 2018
    Publication date: April 25, 2019
    Inventors: Yongho SEOK, James June-Ming WANG, Chao-Chun WANG, Chih-Shi YEE
  • Patent number: 10270515
    Abstract: The present invention relates to a method and device for performing a connection to a distribution system (DS) through a station working as a non-access point (AP) in a wireless communication system. In particular, any station (referred to hereinafter as ‘a first STA’) works as an AP having DS connection performance in first frequency band wireless local area network (WLAN) communication when performing WLAN communication to connect to a distribution system (DS), wherein a direct link setting procedure is performed with a specific STA (referred to hereinafter as ‘a second STA’) working as a station that is not an AP in second frequency band WLAN communication, in the second frequency band WLAN communication; and a connection is made to the DS through the direct link in the second frequency band WLAN communication.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: April 23, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Jihyun Lee, Eunsun Kim, Yongho Seok
  • Patent number: 10257857
    Abstract: A method is implemented by a station (STA) in a Wireless Local Area Network (WLAN) to update a Network Allocation Vector (NAV) maintained by the STA. The method includes receiving a first Physical Layer Protocol Data Unit (PPDU), determining whether a duration indicated in a control field of a preamble portion of the first PPDU is greater than a current NAV value, determining whether the first PPDU is received as an immediate response to a second PPDU previously transmitted by the STA, and updating the NAV maintained by the STA using the duration in response to a determination that the duration is greater than the current NAV value and the first PPDU is not received as an immediate response to the second PPDU previously transmitted by the STA.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: April 9, 2019
    Assignee: NEWRACOM, INC.
    Inventors: Yujin Noh, Yongho Seok
  • Patent number: 10257324
    Abstract: The embodiments provide a method implemented by a network device for transmitting link adaptation feedback in a Wireless Local Area Network (WLAN) that supports multi-user simultaneous transmission. The method generates and transmits a frame that includes one or more link adaptation feedback values associated with a wireless communications link between the network device and a second network device. In one aspect, the one or more link adaptation feedback values may include a link adaptation feedback value for an entire operation bandwidth of the wireless communications link and a link adaptation feedback value for a given subchannel within the operation bandwidth. In another aspect, link adaptation feedback values for one or more users of a multi-user simultaneous transmission are transmitted in a multi-user acknowledgment (ACK) frame. The embodiments allow for efficient link adaptation in a multi-user simultaneous transmission environment.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: April 9, 2019
    Assignee: NEWRACOM, INC.
    Inventors: Daewon Lee, Yongho Seok, Yujin Noh, Sungho Moon, Minho Cheong
  • Publication number: 20190069213
    Abstract: A method and apparatus for supporting A-MSDU data transfer in an A-MPDU system includes sending capability information from a first network device, receiving onto the first network device an A-MPDU frame that includes A-MSDU data, and sending an acknowledgment from the first network device. A bit field in the capability information indicates if inclusion of A-MSDU data in an A-MPDU payload is supported. The first network device is a wireless station (STA). The first network device is part of a peer-to-peer network. The A-MSDU is in a data enabled immediate response context. A bit field in the capability information indicates if receiving an A-MPDU frame including A-MSDU data carried in a QoS Data frame without a block acknowledgment agreement is supported.
    Type: Application
    Filed: August 28, 2018
    Publication date: February 28, 2019
    Inventors: Yongho Seok, Chao-Chun Wang, Chih-Shi Yee
  • Publication number: 20190069267
    Abstract: A method of determining a distance between mobile wireless devices can include determining a format and bandwidth supported by an initiating Station (STA) and a responding Station (STA) and exchanging one or more sets of Null Data Packet (NDP) frames between the initiating Station (STA) and the responding Station (STA) using the determined format and bandwidth. The distance between the initiating Station (STA) and the responding Station (STA) can then be determined based on timing measurements of the one or more sets of Null Data Packet (NDP) frames exchanged between the initiating Station (STA) and the responding Station (STA).
    Type: Application
    Filed: August 31, 2018
    Publication date: February 28, 2019
    Inventors: Yongho SEOK, Chao-Chun WANG, Chih-Shi YEE
  • Patent number: 10218553
    Abstract: Disclosed are a method and a device for transmitting data unit in a WLAN. A method for transmitting data unit in a WLAN comprises: a step of an STA generating a PPDU; and a step of the STA transmitting the PPDU to an access point (AP), wherein the PPDU comprises a first field and a second field, wherein the first field is transmitted on the basis of a first IFFT and the second field is transmitted on the basis of a second IFFT.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: February 26, 2019
    Assignee: LG ELECTRONICS INC.
    Inventor: Yongho Seok
  • Publication number: 20190058569
    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: Application
    Filed: October 2, 2018
    Publication date: February 21, 2019
    Inventor: Yongho SEOK
  • Patent number: 10211890
    Abstract: Disclosed are a method and a device for transferring data from a wireless LAN to a plurality of stations (STAs). The method for transferring data from a wireless LAN to a plurality of STAs may comprise: a step in which an AP generates a MIMOOFDMA format PPDU; and a step in the AP transfers the MIMO-OFDMA format PPDU to the plurality of STAs, wherein the MIMO-OFDMA format PPDU comprises a plurality of sub-channel format PPDUs which are synchronized in time phase, and the plurality of sub-channel format PPDUs are transferred respectively to the plurality of STAs through a plurality of respective sub-channel bands, and the number of training fields for the MIMO transfer which are included in the respective plurality of subchannel format PPDUs can be the same.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: February 19, 2019
    Assignee: LG ELECTRONICS INC.
    Inventor: Yongho Seok
  • Publication number: 20190045537
    Abstract: A method of data acknowledgement includes: transmitting data from a wireless station, transmitting a Block Acknowledgement Request (BAR) from the wireless station, and receiving a Block Acknowledgement (BA) by the wireless station. In one example, the step of transmitting BAR by the wireless station requests an acknowledgment for transmitted data with an access category that has the same priority as the a primary access category. In another example, the step of transmitting BAR by the wireless station requests an acknowledgment for transmitted data with an access category that has the same or higher priority than a primary access category. A wireless device includes at least one transceiver to exchange data with another wireless device, at least one processor, and a memory storing instructions that, when executed by the one or more processors, cause the wireless device to: transmit data, transmit a Block Acknowledgement Request (BAR), and receive a Block Acknowledgement (BA).
    Type: Application
    Filed: August 2, 2018
    Publication date: February 7, 2019
    Inventors: Yongho Seok, Chao-Chun Wang, Chih-Shi Yee
  • Publication number: 20190044586
    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: Application
    Filed: October 2, 2018
    Publication date: February 7, 2019
    Inventor: Yongho SEOK
  • Patent number: 10200224
    Abstract: Disclosed is a method and apparatus for transmitting data in a non-licensed band. The method of transmitting downlink data in the non-licensed band may comprise the steps of: generating, by a base station, downlink data and transmitting the downlink data to a terminal through a downlink subframe. The downlink data may comprise wireless LAN preamble, PDCCH data, and PDSCH data. The wireless LAN preamble may comprise information on time resources for communication between the base station and the terminal, and the PDCCH data may comprise control data for the terminal. Also, the PDSCH data may comprise traffic data for the terminal.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: February 5, 2019
    Assignee: LG ELECTRONICS INC.
    Inventor: Yongho Seok
  • Patent number: 10200165
    Abstract: The present invention relates to a method and apparatus for beamformed transmission in a wireless local area network. According to one aspect of the present invention, a method for transmitting a Physical layer Protocol Data Unit (PPDU) frame to a plurality of stations (STAs) by an Access Point (AP) in a wireless local area network may be provided. The method may include transmitting a SIGNAL field of the PPDU frame, the SIGNAL field including beamforming information indicating whether beamforming is applied to respective data units of the PPDU frame, and transmitting the data units of the PPDU frame, the data units being individually beamformed or not beamformed according to the beamforming information.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: February 5, 2019
    Assignee: NEWRACOM, INC.
    Inventor: Yongho Seok
  • Publication number: 20190037556
    Abstract: The present disclosure relates to a sounding procedure including uplink multi-user transmission in a High Efficiency WLAN (HEW). According to one aspect of the present disclosure, a method for transmitting a response frame by a responding Station (STA) to a transmitting STA in a wireless local area network may be provided. The method may include receiving, from the transmitting STA, a trigger frame including information related to a Modulation and Coding Scheme (MCS) for the response frame, and transmitting, to the transmitting STA, the response frame according to an MCS determined based on the information related to the MCS for the response frame included in the trigger frame. When a type of the response frame corresponds to a Multiple-User (MU) type, a same MCS may be applied to the response frame by a plurality of STAs including the STA and at least one other STA.
    Type: Application
    Filed: September 21, 2018
    Publication date: January 31, 2019
    Inventor: Yongho Seok