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).

  • 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: 10848987
    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: May 9, 2019
    Date of Patent: November 24, 2020
    Assignee: Optis Cellular Technology, LLC
    Inventors: Seung June Yi, Sung Jun Park, Young Dae Lee, Sung Duck Chun
  • Publication number: 20200344685
    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: Application
    Filed: July 9, 2020
    Publication date: October 29, 2020
    Inventors: Seung-June YI, Sung-Jun PARK, Young-Dae LEE, Sung-Duck CHUN
  • Patent number: 10757650
    Abstract: A random access procedure between a mobile terminal and a network is performed based upon the characteristics of a RACH preamble transmitted by the terminal. A first type of random access preamble is selectable by the terminal from a set of random access preambles, and a second type of random access preamble is directly allocated to the terminal by the network. The network responds with a random access response. The terminal performs a discontinuous reception (DRX) operation that allows it to monitor a downlink control channel discontinuously. The DRX operation includes an active time period during which the terminal monitors the control channel after successful reception of the random access response for the second type of random access preamble until a transmission from the network addressed to a Cell-Radio Network Temporary Identifier (C-RNTI) associated with the terminal is received.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: August 25, 2020
    Assignee: Optis Cellular Technology, LLC
    Inventors: Seung-June Yi, Sung-Jun Park, Young-Dae Lee, Sung-Duck Chun
  • Publication number: 20200214043
    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: December 20, 2019
    Publication date: July 2, 2020
    Inventors: Sung Jun Park, Seung June Yi, Young Dae Lee, Sung Duck Chun
  • Patent number: 10517120
    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: July 31, 2017
    Date of Patent: December 24, 2019
    Assignee: EVOLVED WIRELESS LLC
    Inventors: Sung Jun Park, Seung June Yi, Young Dae Lee, Sung Duck Chun
  • Patent number: 10484901
    Abstract: The present invention provides a method of receiving a timing advance command by a user equipment in a wireless communication system. A terminal receives information on a time advance group from a base station, and also receives the tuning advance command corresponding to the time advance group from the base station.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: November 19, 2019
    Assignee: LG Electronics Inc.
    Inventors: Sung Jun Park, Sung Duck Chun, Sung Hoon Jung, Seung June Yi, Young Dae Lee
  • Patent number: 10462697
    Abstract: The present invention provides a method of receiving a timing advance command by a user equipment in a wireless communication system. A terminal receives information on a time advance group from a base station, and also receives the tuning advance command corresponding to the time advance group from the base station.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: October 29, 2019
    Assignee: LG Electronics Inc.
    Inventors: Sung Jun Park, Sung Duck Chun, Sung Hoon Jung, Seung June Yi, Young Dae Lee
  • Patent number: 10433206
    Abstract: An apparatus and method for performing procedures (protocols) of a PDCP (Packet Data Convergence Protocol) layer and an RLC (radio layer in an E-UMTS (Evolved Universal Mobile Telecommunications System) which has evolved from UMTS, among radio protocols of a mobile communication system. The PDCP layer performs ciphering on data (i.e., PDCP SDU) received from an upper layer, generates an indicator discriminating ciphered data and non-ciphered data (i.e., an ROHC feedback packet directly generated by the PDCP layer), and transmits the same to a lower layer (i.e., MAC layer). A PDCP SN (Sequence Number) is defined as an algorithm for ciphering the data in the PDCP layer to perform ciphering in the PDCP layer.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: October 1, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Seung-June Yi, Young-Dae Lee, Sung-Duck Chun, Sung-Jun Park
  • Publication number: 20190289544
    Abstract: A random access procedure between a mobile terminal and a network is performed based upon the characteristics of a RACH preamble transmitted by the terminal. A first type of random access preamble is selectable by the terminal from a set of random access preambles, and a second type of random access preamble is directly allocated to the terminal by the network. The network responds with a random access response. The terminal performs a discontinuous reception (DRX) operation that allows it to monitor a downlink control channel discontinuously. The DRX operation includes an active time period during which the terminal monitors the control channel after successful reception of the random access response for the second type of random access preamble until a transmission from the network addressed to a Cell-Radio Network Temporary Identifier (C-RNTI) associated with the terminal is received.
    Type: Application
    Filed: May 31, 2019
    Publication date: September 19, 2019
    Inventors: Seung-June YI, Sung-Jun PARK, Young-Dae LEE, Sung-Duck CHUN
  • Patent number: 10412711
    Abstract: In a wireless mobile communications system, a method for controlling a radio resource allocation is provided. A network transmits access control information to a terminal such that a request for the radio resource allocation which will be transmitted from the terminal can be controlled. The terminal selectively transmits the request for the radio resource allocation based on the received information, thus a transmission of an unnecessary request for the radio resource can be minimized, thereby preventing a waste of the radio resource.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: September 10, 2019
    Assignee: LG Electronics Inc.
    Inventors: Sung Duck Chun, Young Dae Lee, Sung Jun Park, Seung June Yi
  • Publication number: 20190268785
    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: May 9, 2019
    Publication date: August 29, 2019
    Inventors: Seung June Yi, Sung Jun Park, Young Dae Lee, Sung Duck Chun
  • Patent number: 10348470
    Abstract: The present invention relates to a wireless communication system and a terminal providing a wireless communication service and to a method by which a base station and a terminal transmit and receive data in an evolved universal mobile telecommunications system evolved from universal mobile telecommunications system or a long term evolution system, and more particularly, to a method of controlling a monitoring operation of a physical downlink channel during a radio resource allocation procedure such that the radio resource allocation procedure can be performed with a minimum power usage by the terminal.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: July 9, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Seung June Yi, Sung Duck Chun, Sung Hoon Jung, Sung Jun Park
  • Patent number: 10349348
    Abstract: A random access procedure between a mobile terminal and a network is performed based upon the characteristics of a RACH preamble transmitted by the terminal. A first type of random access preamble is selectable by the terminal from a set of random access preambles, and a second type of random access preamble is directly allocated to the terminal by the network. The network responds with a random access response. The terminal performs a discontinuous reception (DRX) operation that allows it to monitor a downlink control channel discontinuously. The DRX operation includes an active time period during which the terminal monitors the control channel after successful reception of the random access response for the second type of random access preamble until a transmission from the network addressed to a Cell-Radio Network Temporary Identifier (C-RNTI) associated with the terminal is received.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: July 9, 2019
    Assignee: Optis Cellular Technology, LLC
    Inventors: Seung-June Yi, Sung-Jun Park, Young-Dae Lee, Sung-Duck Chun
  • Patent number: RE48291
    Abstract: Disclosed is a radio (wireless) communication system providing a radio communication service and a terminal, and more particularly, to a method of delivering a continuously and/or consecutively received Packet Data Convergence Protocol (PDCP) Service Data units (SDUs) to an upper layer immediately if a PDCP entity receives the PDCP SDUs during a process of a RLC re-establishment within an Evolved Universal Mobile Telecommunications System (E-UMTS) that has evolved from a Universal Mobile Telecommunications System (UMTS) or a Long Term Evolution (LTE) system.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: October 27, 2020
    Assignee: LG Electronics Inc.
    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