Patents by Inventor Sung Duck Chun

Sung Duck Chun 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: 12127264
    Abstract: A user equipment (UE) receives a timing advance medium access control (MAC) control element. The UE applies a timing advance command of the timing advance MAC control element and to start or restart a time alignment timer. The UE releases physical uplink control channel (PUCCH) resources and releases any assignment sounding reference signal (SRS) resources, when the time alignment timer expires. The UE flushes hybrid automatic request (HARQ) buffers, when the time alignment timer expires or is stopped.
    Type: Grant
    Filed: June 5, 2023
    Date of Patent: October 22, 2024
    Assignee: Equo IP LLC
    Inventors: Sung Jun Park, Seung June Yi, Young Dae Lee, Sung Duck Chun
  • Publication number: 20230319755
    Abstract: The objective of the present invention is to provide a method for providing a communication service in a wireless communication system, and a method for operating user equipment (UE) comprising the steps of: receiving information on a network supporting a temporary communication service; receiving additional information for the temporary communication service; transmitting a first message requesting the temporary communication service to the network; receiving a second message authorizing the temporary communication service from the network; and performing a connection establishment procedure for the temporary communication service on the basis of the additional information, wherein the temporary communication is generated by a request by means of the first message, and may be a communication service based on a temporary subscription which expires by termination of the temporary communication service.
    Type: Application
    Filed: June 16, 2021
    Publication date: October 5, 2023
    Applicant: LG ELECTRONICS INC.
    Inventor: Sung Duck CHUN
  • Publication number: 20230319895
    Abstract: A user equipment (UE) receives a timing advance medium access control (MAC) control element. The UE applies a timing advance command of the timing advance MAC control element and to start or restart a time alignment timer. The UE releases physical uplink control channel (PUCCH) resources and releases any assignment sounding reference signal (SRS) resources, when the time alignment timer expires. The UE flushes hybrid automatic request (HARQ) buffers, when the time alignment timer expires or is stopped.
    Type: Application
    Filed: June 5, 2023
    Publication date: October 5, 2023
    Applicant: Equo IP LLC
    Inventors: Sung Jun Park, Seung June Yi, Young Dae Lee, Sung Duck Chun
  • Publication number: 20230262640
    Abstract: In order to provide network slice services through multiple operator networks in a wireless communication system, an operation method of a user equipment (UE) comprises transmitting a first request message requesting registration for a first slice to a first core network node of a first network, receiving a first response message accepting registration for the first slice from the first core network node, transmitting a second request message requesting registration for a second slice to a second core network node of a second network, and receiving a second response message accepting registration for the second slice from the second core network node.
    Type: Application
    Filed: June 17, 2021
    Publication date: August 17, 2023
    Inventor: Sung Duck CHUN
  • Patent number: 11672018
    Abstract: A mobile communication technology, and, more particularly, a method for efficiently transmitting data stored in a message 3 (Msg3) buffer and a user equipment for the same is disclosed. The method of transmitting data by a user equipment in uplink includes receiving an uplink (UP) Grant signal from a base station on a specific message, determining whether there is data stored in a message 3 (Msg3) buffer when receiving the UL Grant signal on the specific message, determining whether the specific message is a random access response message, and transmitting the data stored in the Msg3 buffer to the base station using the UL Grant signal received on the specific message, if there is data stored in the Msg3 buffer when receiving the UL Grant signal on the specific message and the specific message is the random access response message.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: June 6, 2023
    Assignee: Equo IP LLC
    Inventors: Sung Jun Park, Seung June Yi, Young Dae Lee, Sung Duck Chun
  • Publication number: 20230007721
    Abstract: The present disclosure relates to a method for operating a terminal and a base station in a wireless communication system and an apparatus for supporting the same. In an embodiment of the present disclosure, a method for operating a user equipment (UE) in a wireless communication system may include, performing communication through a link established between the UE and another UE; transmitting a first message for requesting an update of an identifier of the link; receiving a second message for responding to the first message; and reestablishing a packet data convergence protocol (PDCP) entity of the UE based on the update of the identifier.
    Type: Application
    Filed: October 28, 2020
    Publication date: January 5, 2023
    Inventors: Sung Duck Chun, Lae Young Kim
  • Publication number: 20220377702
    Abstract: The present disclosure may provide a method of operating a terminal operating based on a plurality of networks in a wireless communication system. Herein, the method of operating the terminal may include: establishing a connection to a first network; receiving a paging message from a second network; transmitting, to the first network, a message for indicating temporary suspension of data communication with the first network; and transitioning to the second network. Herein, the message for indicating the temporary suspension of data communication with the first network may include paging-related information of the first network, and when the terminal receives a paging message from the first network after transitioning to the second network, the terminal may determine whether or not to transition to the first network.
    Type: Application
    Filed: October 28, 2020
    Publication date: November 24, 2022
    Inventor: Sung Duck Chun
  • Publication number: 20220210672
    Abstract: A PDCP status report can be transmitted with reduced radio resources by transmitting the reception success or failure of a series of PDCP service data units (SDUs) in the form of a bitmap when configuring the PDCP status report. A PDCP control packet data unit (PDU) is generated to communicate a status report to a transmitting node for one or more PDCP SDUs transmitted from the transmitting node. The PDCP control PDU includes a data/control (D/C) bit field to indicate the PDCP control PDU is a control PDU, a control PDU type field to indicate a type of corresponding control information, a sequence number field to indicate a first missing PDCP SDU, and a bitmap field for a variable length bitmap. A bit in the variable length bitmap indicates whether a corresponding one of the one or more PDCP SDUs has been successfully been received.
    Type: Application
    Filed: March 18, 2022
    Publication date: June 30, 2022
    Inventors: Seung June Yi, Sung Jun Park, Young Dae Lee, Sung Duck Chun
  • Publication number: 20220174595
    Abstract: A mobile terminal performs a random access procedure with a network that includes transmitting to the network a random access preamble directly allocated to the mobile terminal by the network and receiving a random access response from the network in response to transmission of the random access preamble. The terminal performs a discontinuous reception (DRX) operation that controls how the mobile terminal monitors a physical downlink control channel (PDCCH).
    Type: Application
    Filed: February 16, 2022
    Publication date: June 2, 2022
    Inventors: Seung-June YI, Sung-Jun PARK, Young-Dae LEE, Sung-Duck CHUN
  • Patent number: 11310681
    Abstract: A PDCP status report can be transmitted with reduced radio resources by transmitting the reception success or failure of a series of PDCP service data units (SDUs) in the form of a bitmap when configuring the PDCP status report. A PDCP control packet data unit (PDU) is generated to communicate a status report to a transmitting node for one or more PDCP SDUs transmitted from the transmitting node. The PDCP control PDU includes a data/control (D/C) bit field to indicate the PDCP control PDU is a control PDU, a control PDU type field to indicate a type of corresponding control information, a sequence number field to indicate a first missing PDCP SDU, and a bitmap field for a variable length bitmap. A bit in the variable length bitmap indicates whether a corresponding one of the one or more PDCP SDUs has been successfully been received.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: April 19, 2022
    Assignee: Optis Cellular Technology, LLC
    Inventors: Seung June Yi, Sung Jun Park, Young Dae Lee, Sung Duck Chun
  • Patent number: 11272449
    Abstract: A random access channel (RACH) procedure includes a mobile terminal receiving from a network a message that indicates a RACH preamble for the mobile terminal. The terminal transmits the RACH preamble to the network and then receives a RACH response from the network. The terminal monitors a downlink channel according to a discontinuous reception (DRX) active time for radio resource allocation information for a data transmission by the terminal. The DRX active time specifies a time until the radio resource allocation information for the data transmission is indicated.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: March 8, 2022
    Assignee: Optis Cellular Technology, LLC
    Inventors: Seung-June Yi, Sung-Jun Park, Young-Dae Lee, Sung-Duck Chun
  • Publication number: 20210195655
    Abstract: A mobile communication technology, and, more particularly, a method for efficiently transmitting data stored in a message 3 (Msg3) buffer and a user equipment for the same is disclosed. The method of transmitting data by a user equipment in uplink includes receiving an uplink (UP) Grant signal from a base station on a specific message, determining whether there is data stored in a message 3 (Msg3) buffer when receiving the UL Grant signal on the specific message, determining whether the specific message is a random access response message, and transmitting the data stored in the Msg3 buffer to the base station using the UL Grant signal received on the specific message, if there is data stored in the Msg3 buffer when receiving the UL Grant signal on the specific message and the specific message is the random access response message.
    Type: Application
    Filed: February 24, 2021
    Publication date: June 24, 2021
    Inventors: Sung Jun PARK, Seung June YI, Young Dae LEE, Sung Duck CHUN
  • Patent number: 10966185
    Abstract: A method for a user equipment (UE) to generate a transmission is provided. In this method, a UE starts a time alignment timer when a time alignment command is received. The UE receives an uplink grant; and generates an initial transmission or a retransmission according to the uplink grant only when the time alignment timer is running upon receiving the uplink grant. In addition, the uplink grant is received through a Physical Downlink Control Channel (PDCCH) indicated by a Cell Radio Network Temporary Identifier (C-RNTI) of the UE.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: March 30, 2021
    Assignee: LG Electronics Inc.
    Inventors: Sung Jun Park, Seung June Yl, Young Dae Lee, Sung Duck Chun
  • Patent number: 10939473
    Abstract: A mobile communication technology, and, more particularly, a method for efficiently transmitting data stored in a message 3 (Msg3) buffer and a user equipment for the same is disclosed. The method of transmitting data by a user equipment in uplink includes receiving an uplink (UP) Grant signal from a base station on a specific message, determining whether there is data stored in a message 3 (Msg3) buffer when receiving the UL Grant signal on the specific message, determining whether the specific message is a random access response message, and transmitting the data stored in the Msg3 buffer to the base station using the UL Grant signal received on the specific message, if there is data stored in the Msg3 buffer when receiving the UL Grant signal on the specific message and the specific message is the random access response message.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: March 2, 2021
    Assignee: EVOLVED WIRELESS LLC
    Inventors: Sung Jun Park, Seung June Yi, Young Dae Lee, Sung Duck Chun
  • Publication number: 20210051493
    Abstract: A PDCP status report can be transmitted with reduced radio resources by transmitting the reception success or failure of a series of PDCP service data units (SDUs) in the form of a bitmap when configuring the PDCP status report. A PDCP control packet data unit (PDU) is generated to communicate a status report to a transmitting node for one or more PDCP SDUs transmitted from the transmitting node. The PDCP control PDU includes a data/control (D/C) bit field to indicate the PDCP control PDU is a control PDU, a control PDU type field to indicate a type of corresponding control information, a sequence number field to indicate a first missing PDCP SDU, and a bitmap field for a variable length bitmap. A bit in the variable length bitmap indicates whether a corresponding one of the one or more PDCP SDUs has been successfully been received.
    Type: Application
    Filed: November 2, 2020
    Publication date: February 18, 2021
    Inventors: Seung June YI, Sung Jun PARK, Young Dae LEE, Sung Duck CHUN
  • Patent number: RE48326
    Abstract: In a wireless mobile communications system, a method of transmitting and receiving radio access information that allows a faster and an efficient way of establishing a radio connection between a terminal and a target base station while performing a handover for the terminal to a cell of the target base station. The network transmits in advance, the radio access information and the like, to the terminal so that the terminal can be connected with the target cell in a faster manner which minimizes the total time for the handover process.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: November 24, 2020
    Assignee: EVOLVED WIRELESS LLC
    Inventors: Sung Jun Park, Young Dae Lee, Sung Duck Chun, Myung Cheul Jung
  • Patent number: RE48478
    Abstract: In a wireless mobile communications system, a method of transmitting and receiving radio access information that allows a faster and an efficient way of establishing a radio connection between a terminal and a target base station while performing a handover for the terminal to a cell of the target base station. The network transmits in advance, the radio access information and the like, to the terminal so that the terminal can be connected with the target cell in a faster manner which minimizes the total time for the handover process.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: March 16, 2021
    Assignee: EVOLVED WIRELESS LLC
    Inventors: Sung Jun Park, Young Dae Lee, Sung Duck Chun, Myung Cheul Jung
  • Patent number: RE48836
    Abstract: A method for performing random access in a wireless communication system is provided. The method includes transmitting a preamble for random access in uplink, receiving a random access response message including back-off information as a response to the preamble, and performing back-off using the back-off information when the random access has failed.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: November 30, 2021
    Assignee: LG Electronics Inc.
    Inventors: Young Dae Lee, Sung Jun Park, Seung June Yi, Sung Duck Chun
  • Patent number: RE49442
    Abstract: Disclosed is the radio (wireless) communication system providing a radio communication service and the terminal, and more particularly, to a method of an uplink HARQ (Hybrid Automatic Repeat reQuest) operation at an expiry of time alignment timer in an Evolved Universal Mobile Telecommunications System (E-UMTS) evolved from the Universal Mobile Telecommunications System (UMTS) or a Long Term Evolution (LTE) system.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: February 28, 2023
    Assignee: LG Electronics Inc.
    Inventors: Sung-Duck Chun, Seung-June Yi, Sung-Jun Park, Young-Dae Lee
  • Patent number: RE49739
    Abstract: A method for performing random access in a wireless communication system is provided. The method includes transmitting a preamble for random access in uplink, receiving a random access response message including back-off information as a response to the preamble, and performing back-off using the back-off information when the random access has failed.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: November 28, 2023
    Assignee: LG Electronics Inc.
    Inventors: Young Dae Lee, Sung Jun Park, Seung June Yi, Sung Duck Chun