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: 20190215037
    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: Application
    Filed: January 3, 2019
    Publication date: July 11, 2019
    Inventors: Yongho SEOK, Jianhan LIU, Chao-Chun Wang, James Chih-Shi YEE
  • Patent number: 10342045
    Abstract: Disclosed are a method and an apparatus for transmitting a downlink in a wireless communication system. A method for transmitting the downlink in a WLAN comprises the steps of: an access point (AP) transmitting, to a plurality of stations (STA), each of a plurality of request to send (RTS) frames through each of a plurality of channels; and the AP receiving a clear to send (CTS) frame from at least one of the plurality of STAs through at least one channel from the plurality of channels, wherein each of the plurality of RTS frames may include channel information for indicating a channel to be used from among the plurality of channels when transmitting the downlink to each of the STAs, and identifier information for indicating the plurality of STAs.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: July 2, 2019
    Assignee: LG ELECTRONICS INC.
    Inventor: Yongho Seok
  • Publication number: 20190191462
    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 Physical Layer Protocol Data Unit (PPDU) from an Access Point (AP), where the first PPDU elicits an immediate response from the STA, determining whether the NAV maintained by the STA was previously set using a duration indicated in a second PPDU that originated from a same Basic Service Set (BSS) as a BSS that the STA is associated with, and transmitting a third PPDU to the AP as an immediate response to the first PPDU without regard for the NAV maintained by the STA in response to a determination that the NAV maintained by the STA was previously set using the duration indicated in the second PPDU that originated from the BSS that the STA is associated with.
    Type: Application
    Filed: February 25, 2019
    Publication date: June 20, 2019
    Inventors: Yujin NOH, Yongho SEOK
  • Patent number: 10327246
    Abstract: Methods and apparatus for a wideband Physical layer Protocol Data Unit (PPDU) transmission in a High Efficiency WLAN (HEW) include a method for transmitting a Physical layer Protocol Data Unit (PPDU) in a wireless local area network. The method may further include performing a stream parsing of data bit streams to output blocks, determining whether to perform a segment parsing of the blocks based on a predetermined condition to output frequency subblocks, performing a constellation mapping of the blocks or the frequency subblocks, and transmitting the PPDU.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: June 18, 2019
    Assignee: NEWRACOM, Inc.
    Inventor: Yongho Seok
  • Patent number: 10327226
    Abstract: Methods and apparatus for resource allocation for multiple user transmission in a High Efficiency WLAN (HEW) are described. An embodiment is a method for transmitting a Physical layer Protocol Data Unit (PPDU) by an access point (AP) to a plurality of stations (STAs). The method may include transmitting, to the plurality of STAs, a preamble including a High-Efficiency SIGNAL (HE-SIG) field, an HE-Short Training Field (HE-STF) field and an HE-Long Training Field (HE-LTF) field in the PPDU on a transmission channel; and transmitting, on the transmission channel, a data field including a group addressed frame transmitted in a first subchannel among a plurality of subchannels into which the transmission channel is divided.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: June 18, 2019
    Assignee: NEWRACOM, INC.
    Inventor: Yongho Seok
  • 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: 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
  • 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
  • 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