Patents by Inventor Sun-Heui Ryoo

Sun-Heui Ryoo 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: 10499301
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Embodiments of the present disclosure provide a method and an apparatus for efficiently controlling a handover process and a Radio Link Failure (RLF) process. According to embodiments of the present disclosure, an operating method of a User Equipment (UE) includes starting a first timer while a second timer regarding a radio link failure (RLF) is running, and if one of the first timer and the second timer expires, performing a radio resource control (RRC) connection re-establishment. When the handover and the RLF concurrently occur in the mobile communication system, the embodiments of the present disclosure can minimize the service interruption time by conducting the handover instead of the Radio Resource Control (RRC) connection re-establishment due to the RLF.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: December 3, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Min Moon, Nigam Anshuman, Jung-Soo Jung, Sun-Heui Ryoo, Sung-Jin Lee
  • Publication number: 20190357190
    Abstract: Disclosed is a 5G or pre-5G communication system provided so as to support a data transmission rate higher than that of a 4G communication system, such as LTE. A method and a device for transmitting information in a communication system are disclosed. The method for allocating resources in a cellular network using an unlicensed band comprises the steps of: generating at least one resource allocation signal containing information indicating a plurality of continuous uplink subframes capable of communicating through the unlicensed band; transmitting the resource allocation signal to a user equipment (UE) through the unlicensed band for the duration of at least one downlink subframe; and receiving uplink data from the UE for the duration of the continuous uplink subframes.
    Type: Application
    Filed: August 2, 2019
    Publication date: November 21, 2019
    Inventors: Seung-Hoon PARK, Jung-Min MOON, Sun-Heui RYOO, Byoung-Hoon JUNG, Jung-Soo JUNG
  • Publication number: 20190289642
    Abstract: The present disclosure relates to a 5G or pre-5G communication system that will be provided to support higher data transfer rate following a 4G communication system such as LTE. The present disclosure relates to a method of performing random access of a terminal, said method comprising: an operation of determining the number of received beams of a base station connected to transmitted beams of the terminal; an operation of determining an area of wireless transfer resource on the basis of the number of the received beams; and an operation of transmitting random access message in the random access resource defined by the beam resource corresponding to the determined number and the wireless transfer resource corresponding to the determined area.
    Type: Application
    Filed: May 31, 2019
    Publication date: September 19, 2019
    Inventors: Sun-Heui RYOO, Sung-Jin PARK, Nam-I KIM, Dong-Ho CHO
  • Publication number: 20190281512
    Abstract: A method and an apparatus for controlling a waiting time related to determination of a radio link failure in a wireless communication system are provided. The method includes receiving a message from a network, if a first timer for determination of the radio link failure is running and the message includes timer information related to the waiting time, starting a second timer related to the waiting time based on the timer information, and if the second timer expires before expiration of the first timer, determining a channel situation of a serving cell as a situation of the radio link failure.
    Type: Application
    Filed: May 28, 2019
    Publication date: September 12, 2019
    Inventors: Jung-Min MOON, Anshuman NIGAM, Jung-Soo JUNG, Sun-Heui RYOO, Sung-Jin LEE
  • Patent number: 10404666
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A method for communicating by a user equipment with a macro cell base station and a small cell base station in a communication system is provided. The method comprises applying a first base station security key to a first communication link with the macro cell base station; generating a second base station security key to be used for a second communication link with the small cell base station based on the first base station security key; applying the second base station security key to the second communication link with the small cell base station; and communicating through at least one of the first communication link and the second communication link.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: September 3, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sun-Heui Ryoo, Soeng-Hun Kim, Jung-Soo Jung, Jung-Min Moon, Anshuman Nigam, Sung-Jin Lee
  • Patent number: 10383103
    Abstract: Disclosed is a 5G or pre-5G communication system provided so as to support a data transmission rate higher than that of a 4G communication system, such as LTE. A method and a device for transmitting information in a communication system are disclosed. The method for allocating resources in a cellular network using an unlicensed band comprises the steps of: generating at least one resource allocation signal containing information indicating a plurality of continuous uplink subframes capable of communicating through the unlicensed band; transmitting the resource allocation signal to a user equipment (UE) through the unlicensed band for the duration of at least one downlink subframe; and receiving uplink data from the UE for the duration of the continuous uplink subframes.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: August 13, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-Hoon Park, Jung-Min Moon, Sun-Heui Ryoo, Byoung-Hoon Jung, Jung-Soo Jung
  • Patent number: 10375729
    Abstract: A fifth generation (5G) or pre-5G communication system for supporting higher data transmission rate after a fourth generation (4G) communication system, such as long term evolution (LTE) is provided. A method of transmitting data by a transmitting device in a wireless communication system using a shared band includes determining a first length of a next time period for determining a next data transmission in the shared band based on at least one of link information configured with at least two receiving devices, and a measurement value of the transmitting device, determining whether a channel of the shared band is occupied in the next time period, and transmitting next data according to a result of the determinations.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: August 6, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-Hoon Park, Jung-Min Moon, Byoung-Hoon Jung, Sun-Heui Ryoo, Jung-Soo Jung
  • Publication number: 20190223087
    Abstract: The present disclosure relates to a pre-5.sup.th-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4.sup.th-Generation (4G) communication system such as long term evolution (LTE). Provided is a method for processing System Information (SI) by a User Equipment (UE) in a mobile communication system.
    Type: Application
    Filed: March 18, 2019
    Publication date: July 18, 2019
    Inventors: Anshuman NIGAM, Jung-Soo JUNG, Sun-Heui RYOO, Jung-Min MOON, Sung-Jin LEE
  • Patent number: 10333654
    Abstract: The present invention relates to 5G or pre-5G communication system for supporting a higher data transmission rate after 4G communication system such as LTE. The present invention provides a method and a device for executing a hybrid automatic repeat request (HARQ) through a channel in an unlicensed frequency band.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: June 25, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Min Moon, Seung-Hoon Park, Jung-Soo Jung, Sun-Heui Ryoo, Byoung-Hoon Jung
  • Patent number: 10314059
    Abstract: The present disclosures provides a method in a communication system for scheduling, by a base station, a terminal which uses an unlicensed band channel, comprising: a step in which a base station transmits scheduling information with respect to an unlicensed band to a terminal through a licensed band channel in a first subframe; a step in which the base station performs a search for the unlicensed band channel; and a step in which, if the search for the unlicensed band channel is successful, downlink data is transmitted to the terminal through the unlicensed band channel on the basis of the scheduling information.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: June 4, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Jin Lee, Jung-Soo Jung, Sun-Heui Ryoo, Jung-Min Moon
  • Patent number: 10313904
    Abstract: The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data transmission rate after a 4G communication system such as LTE. In a wireless communication system of the present disclosure, a method for receiving, by a base station, a measurement result of a terminal includes: a process for allocating at least one of a plurality of measurement gaps, set for measuring a licensed band, for the measurement of an unlicensed band; a process for transmitting activation instruction information that instructs the activation of a measurement gap for the allocated unlicensed band measurement; and a process for receiving, from the terminal, a measurement result for the unlicensed band measured in the activated measurement gap by the terminal.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: June 4, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Min Moon, Sun-Heui Ryoo, Sung-Jin Lee, Jung-Soo Jung, Ra-Yeon Ahn
  • Patent number: 10314080
    Abstract: The present disclosure relates to a 5G or pre-5G communication system that will be provided to support higher data transfer rate following a 4G communication system such as LTE. The present disclosure relates to a method of performing random access of a terminal, said method comprising: an operation of determining the number of received beams of a base station connected to transmitted beams of the terminal; an operation of determining an area of wireless transfer resource on the basis of the number of the received beams; and an operation of transmitting random access message in the random access resource defined by the beam resource corresponding to the determined number and the wireless transfer resource corresponding to the determined area.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: June 4, 2019
    Assignees: Samsung Electronics Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Sun-Heui Ryoo, Sung-Jin Park, Nam-I Kim, Dong-Ho Cho
  • Patent number: 10313935
    Abstract: A method and an apparatus for controlling a waiting time related to determination of a radio link failure in a wireless communication system are provided. The method includes receiving a message from a network, if a first timer for determination of the radio link failure is running and the message includes timer information related to the waiting time, starting a second timer related to the waiting time based on the timer information, and if the second timer expires before expiration of the first timer, determining a channel situation of a serving cell as a situation of the radio link failure.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: June 4, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Min Moon, Anshuman Nigam, Jung-Soo Jung, Sun-Heui Ryoo, Sung-Jin Lee
  • Publication number: 20190159098
    Abstract: Methods and apparatuses are provided for a terminal in a wireless communication system supporting dual connectivity of a first base station and a second base station is provided. A radio link failure (RLF) associated with at least one cell of the second base station is detected. A failure message is transmitted to the first base station upon detecting the RLF.
    Type: Application
    Filed: January 23, 2019
    Publication date: May 23, 2019
    Inventors: Anshuman Nigam, Jung Min Moon, Jung Soo Jung, Sun Heui Ryoo, Sung Jin Lee
  • Patent number: 10257856
    Abstract: Disclosed is a 5G or pre-5G communication system for supporting a data transmission rate higher than that of a 4G communication system such as LTE.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: April 9, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-Hoon Park, Sun-Heui Ryoo, Jung-Min Moon
  • Patent number: 10251184
    Abstract: A 5th generation (5G) or pre-5G communication system for supporting a higher data transfer rate than a 4th generation (4G) communication system such as long term evolution (LTE) is provided. A method and apparatus which perform communication in a wireless communication system using an unlicensed band, and a method in which a base station controls a clear channel assessment (CCA) timing in a wireless communication system using an unlicensed band are provided. The method includes determining whether to change CCA timing by comparing a number of at least one of continuous successes or continuous failures in a CCA with a predetermined threshold value and when it is determined that the CCA timing is to be changed, randomizing the CCA timing.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: April 2, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Min Moon, Seung-Hoon Park, Sun-Heui Ryoo, Jung-Soo Jung
  • Patent number: 10244440
    Abstract: The objective of the present invention is to provide services by effectively switching, by a terminal, a macro cell and a small cell on the basis of time in a communication system in which the macro cell and the small cell coexist. A method for operating a terminal in a wireless communication system comprises the steps of: transmitting, to a first base station and/or a second base station, information on a switching delay time required for the terminal to perform cell switching; and communicating through a resource of the first base station and a resource of the second base station which are allocated by considering the switching delay time.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: March 26, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Jeong Kang, Sun-Heui Ryoo, Jung-Soo Jung, Sang-Wook Kwon, Jong-Hyung Kwun, Suk-Won Kim, June Hwang
  • Publication number: 20190089682
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A method for communicating by a user equipment with a macro cell base station and a small cell base station in a communication system is provided. The method comprises applying a first base station security key to a first communication link with the macro cell base station; generating a second base station security key to be used for a second communication link with the small cell base station based on the first base station security key; applying the second base station security key to the second communication link with the small cell base station; and communicating through at least one of the first communication link and the second communication link.
    Type: Application
    Filed: November 15, 2018
    Publication date: March 21, 2019
    Inventors: Sun-Heui RYOO, Soeng-Hun KIM, Jung-Soo JUNG, Jung-Min MOON, Anshuman NIGAM, Sung-Jin LEE
  • Patent number: 10237810
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-Generation (4G) communication system such as long term evolution (LTE). Provided is a method for processing System Information (SI) by a User Equipment (UE) in a mobile communication system. The method includes receiving, from a first base station (BS), information related to change of SI; and waiting for reception of changed SI based on the information.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: March 19, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Anshuman Nigam, Jung-Soo Jung, Sun-Heui Ryoo, Jung-Min Moon, Sung-Jin Lee
  • Patent number: 10225784
    Abstract: Methods and apparatuses are provided for a terminal in a wireless communication system supporting dual connectivity of a first base station and a second base station is provided. A radio link failure (RLF) associated with at least one cell of the second base station is detected. A failure message is transmitted to the first base station upon detecting the RLF.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: March 5, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Anshuman Nigam, Jung Min Moon, Jung Soo Jung, Sun Heui Ryoo, Sung Jin Lee