Patents by Inventor Suhwook Kim

Suhwook Kim 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: 10356711
    Abstract: Disclosed are a method and a device for triggering a plurality of PS-poll frames in a wireless LAN.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: July 16, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Giwon Park, Kiseon Ryu, Jeongki Kim, Hangyu Cho, Suhwook Kim
  • Patent number: 10356760
    Abstract: Provided is a method and apparatus for performing active scanning in a wireless communication system. The method for performing active scanning in a wireless communication system may comprise the steps of: receiving, from an access point (AP) by a station (STA), a trigger frame including information on a probing duration which allows transmission of a probe request; and transmitting a probe request frame to the AP during the probing duration by the STA.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: July 16, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Suhwook Kim, Kiseon Ryu, Jinyoung Chun, Wookbong Lee, Jeongki Kim, Jinsoo Choi, Hangyu Cho
  • Patent number: 10356756
    Abstract: A data transmission method of a station (STA) device in a wireless LAN system is disclosed. The data transmission method of an STA device, according to the present invention, comprises: a receiving step of receiving an uplink data frame from a first STA, wherein the uplink data frame includes first receiving operating mode information indicating a receiving operating mode to be changed by the first STA; and a transmitting step of transmitting an ACK frame for the uplink data frame, wherein the ACK frame includes mode change acceptance information indicating whether to accept or reject the change in the receiving operating mode according to the receiving operating mode information.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: July 16, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyeyoung Choi, Kiseon Ryu, Jeongki Kim, Hangyu Cho, Suhwook Kim
  • Patent number: 10356757
    Abstract: A method for a station (STA) not having an association identifier (AID) allocated thereto transmitting a signal in a wireless LAN system, according to one embodiment of the present invention, comprises the steps of: transmitting a first frame through at least one resource among resources indicated by a trigger frame; and receiving a multi-STA block Ack (M-BA) frame as a reply to the first frame, wherein, if in the M-BA frame a MAC address of the STA that is different from a first information is detected from at least a part of a first field reserved for the first information, an N-bit of a second field preceding the first field is set as a temporary AID of the STA.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: July 16, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyeyoung Choi, Kiseon Ryu, Jeongki Kim, Hangyu Cho, Suhwook Kim
  • Publication number: 20190215905
    Abstract: A method and an apparatus for triggering uplink data in a wireless LAN are disclosed. A method for receiving uplink data in a wireless LAN may comprise: a step in which an access point (AP) transmits a trigger frame for random connection; and a step in which the AP receives at least one buffer status report frame from at least one STA on a random connection transmission opportunity (TXOP) which is set on the basis of the trigger frame for random connection, wherein the random connection TXOP is allocated for a channel access attempt for transmitting the buffer status report frame of each of a plurality of non-specific STAs, and each of the at least one STA may be an STA which succeeds in the channel access among the plurality of non-specific STAs.
    Type: Application
    Filed: March 19, 2019
    Publication date: July 11, 2019
    Applicant: LG ELECTRONICS INC.
    Inventors: Kiseon RYU, Suhwook KIM, Jinyoung CHUN, Jeongki KIM, Giwon PARK, Hangyu CHO
  • Patent number: 10349288
    Abstract: A method and device for receiving a frame are disclosed. The method for receiving a frame over a wireless LAN may include: transmitting, by an access point (AP), an uplink transmission scheduling frame to a plurality of stations (STA); receiving, by the AP, a sync PPDU in response to the uplink transmission scheduling frame from each of the plurality of STAs; transmitting, by the AP, an adjustment frame, including adjustment information determined based on the sync PPDU, to the plurality of STAs; receiving, by the AP, the uplink frame transmitted based on the adjustment information by each of the plurality of STAs over an overlap time resource; and transmitting, by the AP, an ACK frame of the uplink frame to each of the plurality of STAs.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: July 9, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Kiseon Ryu, Jeongki Kim, Giwon Park, Suhwook Kim, Hangyu Cho
  • Patent number: 10341075
    Abstract: The present document relates to a method for transmitting an acknowledgement/negative acknowledgement (ACK/NACK) signal for transmission data of a plurality of stations (STAs) by an access point (AP) in a wireless LAN (WLAN) system, and an apparatus therefor. To this end, the AP transmits a trigger frame to the plurality of STAs, and on receiving data from the plurality of STAs in response to the trigger frame, transmits ACK/NACK signals for the data received from the plurality of STAs through a multiuser block ACK frame (M-BA frame). Here, the M-BA frame includes ACK/NACK signals for STAs, the number of which is determined so as not to exceed a specific transmission unit time, among the ACK/NACK signals for the plurality of STAs, and the AP additionally transmits ACK/NACK signals to one or more STAs, to which ACK/NACK signals have not been transmitted through the M-BA, among the plurality of STAs.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: July 2, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Jeongki Kim, Kiseon Ryu, Jinyoung Chun, Suhwook Kim, Hangyu Cho
  • Patent number: 10334523
    Abstract: A method for managing power of a wireless terminal in a wireless local area network (WLAN) system according to one embodiment includes: transmitting, by a first wireless terminal that switches between an awake state and a doze state based on a power save mode for power management, a target wake time (TWT) request frame for requesting first target beacon transmission time (TBTT) information, which indicates a reception time of a first beacon frame, and listen interval information, which indicates a reception interval for a subsequent beacon frame, to a second wireless terminal; receiving, by the first wireless terminal, a TWT response frame including the first TBTT information and the listen interval information from the second wireless terminal in response to the TWT request frame; switching, by the first wireless terminal, to the doze state after receiving the TWT response frame; switching, by the first wireless terminal, to the awake state according to the first TBTT information in order to receive the firs
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: June 25, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyunhee Park, Kiseon Ryu, Suhwook Kim, Jeongki Kim, Hangyu Cho
  • Patent number: 10327203
    Abstract: A method for UL MU transmission of an STA operating in a power save mode comprises the steps of: transmitting a TWT request element including first information related to a requested TBTT of a first beacon frame and second information related to a requested wake interval between subsequent beacon frames the STA intends to receive to an AP; receiving a TWT response element from the AP in response to the TWT request element; switching to a doze state from the awake state after receiving the TWT response element; switching to the awake state from the doze state based on the third information in order to receive the first beacon frame from the AP; receiving the first beacon frame including fifth information related to a trigger transmission time of a trigger frame soliciting the UL MU transmission from one or more STAs from the AP.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: June 18, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyeyoung Choi, Kiseon Ryu, Jeongki Kim, Hangyu Cho, Suhwook Kim
  • Patent number: 10327204
    Abstract: A method and a corresponding apparatus, for a power saving mode operation in a wireless LAN, the method including: an AP transmitting, on the basis of a virtual bitmap of a TIM element comprised in a beacon frame, a PS-poll request frame to a plurality of target STAs that have received the indication of the existence of pended downlink data; the AP receiving, on overlapped time resources, each of a plurality of PS-poll frames from each of a plurality of PS-poll transmission STAs that are indicated on the basis of the PS-poll request frame among the plurality of target STAs; and the AP, on the overlapped time resources, transmitting each of a plurality of downlink frames to each of the plurality of PS-poll transmission STAs as a response to each of the plurality of PS-poll frames.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: June 18, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Giwon Park, Kiseon Ryu, Jeongki Kim, Hangyu Cho, Suhwook Kim
  • Patent number: 10327250
    Abstract: The present document relates to a wireless communication system and, more specifically, to a method for flexibly supporting resource allocation in a wireless LAN system, and a method and an apparatus for signal transmission using the same. To this end, a first STA configures a radio frame comprising: a signaling (SIG) field including control information; and a data field in which data can be transmitted via a discontinuous channel or a channel having a bandwidth size that is supported by a legacy system. When the first STA transmits the configured radio frame to a second STA, the SIG field preferably comprises: information about a full bandwidth in which data can be transmitted via the data field; and null indicator information indicating a channel region of the full bandwidth that is not used in data transmission, or used channel indicator information indicating a channel region of the full bandwidth that is used in data transmission.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: June 18, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Jeongki Kim, Kiseon Ryu, Giwon Park, Suhwook Kim, Hangyu Cho
  • Patent number: 10321472
    Abstract: The present document relates to a method for efficiently performing uplink multi-user transmission in a wireless LAN system and an apparatus therefor. To this end, an access point (AP) may transmit a downlink multi-user frame to a plurality of STAs, receive an uplink frame including an acknowledgement/non-acknowledgement (ACK/NACK) signal for the downlink multi-user frame and an uplink scheduling request signal from at least two STAs among the STAs, transmit a downlink frame including uplink scheduling information to the at least two STAs on the basis of the uplink scheduling request signal, and receive an uplink multi-user frame including data from the at least two STAs in response thereto. Here, an SIG field of the downlink frame preferably comprises an indicator indicating that the downlink frame includes uplink multi-user scheduling information.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: June 11, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Jeongki Kim, Kiseon Ryu, Giwon Park, Suhwook Kim, Hangyu Cho
  • Publication number: 20190174442
    Abstract: A method for transmitting a frame in a wireless LAN system according to the present embodiment comprises: a step of determining whether to transmit a first frame to an AP through an EDCA by comparing a time parameter indicating the time used for transmission of a wireless terminal with a predetermined allowable time; a step of summing up, to the time parameter, a first required time for transmission of the first frame; a step of receiving, from the AP, a trigger frame for multi-user uplink transmission; and a step of performing data processing for a second frame transmitted in response to the trigger frame, wherein a second required time for transmission of the second frame is not summed up to the time parameter.
    Type: Application
    Filed: May 17, 2017
    Publication date: June 6, 2019
    Applicant: LG ELECTRONICS INC.
    Inventors: Kiseon RYU, Jeongki KIM, Hyunhee PARK, Suhwook KIM, Hangyu CHO
  • Publication number: 20190159245
    Abstract: A method for a frame transmitted on the basis of random access in a wireless LAN system according to the present embodiment comprises the steps of: receiving, by a user STA, a trigger frame from an AP, the trigger frame including identification information for random access and resource information indicating a random access resource unit corresponding to the identification information; performing a countdown operation for the random access resource unit by the user STA; and transmitting, by the user STA, a first uplink frame to the AP on the basis of the random access resource unit obtained through the countdown operation, the first uplink frame including buffer status information associated with traffic buffered in the user STA, wherein the first uplink frame is a frame requesting the AP for transmission of a response.
    Type: Application
    Filed: April 17, 2017
    Publication date: May 23, 2019
    Applicant: LG ELECTRONICS INC.
    Inventors: Hyunhee PARK, Kiseon RYU, Suhwook KIM, Jeongki KIM, Hangyu CHO, Jinsoo CHOI
  • Patent number: 10292155
    Abstract: A method and a device for receiving a multicast frame in a wireless LAN are disclosed. The method for receiving a multicast frame in a wireless LAN comprises the steps of: combining, by an STA, an AP on the basis of an initial access frame transmitted by the AP through a primary channel; setting, by the STA, an operating channel as an exclusive multicast channel on a first time resource, wherein the first time resource and the primary channel are indicated on the basis of the initial access frame; receiving, by the STA, the multicast frame from the AP through the exclusive multicast channel on the first time resource; setting, by the STA, the operating channel as the primary channel on a second time resource; and receiving, by the STA, a unicast frame from the AP through the primary channel on the second time resource.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: May 14, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Jeongki Kim, Kiseon Ryu, Giwon Park, Hangyu Cho, Suhwook Kim
  • Patent number: 10292161
    Abstract: Proposed is a method for determining transmission using a network allocation vector (NAV) in a wireless LAN system. Specifically, after a receiving device receives a trigger frame, which triggers an uplink multiple user transmission, from a transmitting device, whether to transmit an uplink physical layer protocol data unit (PPDU) corresponding to the trigger frame is determined using the NAV of the receiving device. In this case, if the NAV is established by an intra-basic service set (BSS) frame, whether to transmit the uplink PPDU is determined without taking the NAV into consideration.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: May 14, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Kiseon Ryu, Jeongki Kim, Hangyu Cho, Suhwook Kim
  • Patent number: 10278208
    Abstract: One embodiment of the present invention relates to a method by which a station (STA) performs uplink transmission in a wireless communication system, the method for performing uplink transmission comprising the steps of: receiving a trigger frame from an AP; and performing uplink transmission as a response to the trigger frame, wherein, when a network allocation vector (NAV) of the STA receiving the trigger frame is idle and clear channel assessment (CCA) result is idle, the uplink transmission is performed.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: April 30, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyeyoung Choi, Kiseon Ryu, Jeongki Kim, Hangyu Cho, Suhwook Kim
  • Patent number: 10277368
    Abstract: According to an embodiment of the present specification, a method for transmitting an uplink frame in a wireless local area network (WLAN) system and performed by a user station (STA) includes: receiving from an access point (AP) a trigger frame comprising association identifier information for orthogonal frequency division multiple access (OFDMA)-based random access and allocation information indicating a resource unit, wherein the association identifier information indicates any one of a first value irrelevant to whether being associated with the AP, a second value for a first STA group associated with the AP, and a third value for a second STA group un-associated with the AP; and performing a countdown operation according to the association identifier information based on a backoff value which is set in a backoff counter of the user STA in order to transmit the uplink frame.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: April 30, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Suhwook Kim, Kiseon Ryu, Jeongki Kim, Hangyu Cho, Hyunhee Park
  • Patent number: 10278127
    Abstract: Disclosed are a power save mode-based operating method and apparatus in a wireless LAN. The power save mode-based operating method in a wireless LAN comprises the steps of: receiving, by an STA, overheard BSS information from an AP; receiving, by the STA, a PPDU, wherein the PPDU includes information on a BSS having transmitted the PPDU; determining, by the STA, whether the overheard BSS information includes the information on the BSS; and switching an awake state to a doze state when the STA determines whether the overheard BSS information includes the information on the BSS, wherein the overheard BSS information can include the information on at least one overheard BSS for transmitting a frame enabled to be overheard by the AP.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: April 30, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Giwon Park, Kiseon Ryu, Jeongki Kim, Hangyu Cho, Suhwook Kim
  • Publication number: 20190124719
    Abstract: The present specification proposes a signal processing method for changing an operating mode for transmitting a PPDU in a wireless LAN system. Specifically, a first station receives, from the second station, indication information which indicates a change in an operating mode indicating a receiving channel bandwidth and a number of spatial streams supported by a second station during a TXOP interval. When the number of spatial streams and the receiving channel bandwidth decrease, the first station configures a PPDU for the second station by using the indication information after transmitting an ACK for the indication information. When the number of spatial streams and the receiving channel bandwidth increase, the first station configures a PPDU for the second station by using the indication information during a subsequent TXOP interval of the TXOP interval.
    Type: Application
    Filed: April 4, 2017
    Publication date: April 25, 2019
    Applicant: LG ELECTRONICS INC.
    Inventors: Hyunhee PARK, Kiseon RYU, Suhwook KIM, Jeongki KIM, Hangyu CHO