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).

  • Publication number: 20180220459
    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: Application
    Filed: July 29, 2016
    Publication date: August 2, 2018
    Inventors: Seung-Hoon PARK, Sun-Heui RYOO, Jung-Min MOON
  • Patent number: 10034208
    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). The present disclosure is to perform connection re-establishment in a mobile communication system, wherein a method for operating a terminal in a mobile communication system includes: receiving, from a base station, a message informing whether to support to fetching a context of the terminal; and determining whether at least one base station supports to fetching the context based on the message. In addition, the present invention includes other embodiments as well as the above-described embodiments.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: July 24, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Min Moon, Sung-Jin Lee, Jung-Soo Jung, Sun-Heui Ryoo
  • Patent number: 10015710
    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 a long term evolution (LTE). An operating method of a user equipment (UE) in a mobile communication system is provided. The operating method includes receiving a service through a first enhanced node B (eNB) for a first time interval period from a first timing point; and receiving the service through a second eNB for a second time interval period from a second timing point, wherein the first timing point is different from the second timing point.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: July 3, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Jeong Kang, Sun-Heui Ryoo, Jung-Soo Jung, Jong-Hyung Kwun, Suk-Won Kim, Bong-Jhin Shin, Sung-Jin Lee
  • Publication number: 20180183767
    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: February 13, 2018
    Publication date: June 28, 2018
    Inventors: Sun-Heui Ryoo, Soeng-Hun Kim, Jung-Soo Jung, Jung-Min Moon, Anshuman Nigam, Sung-Jin Lee
  • Publication number: 20180176890
    Abstract: The present invention relates to a 5th generation (5G) or pre-5G communication system to be provided for supporting a data transmission rate higher than that of a 4th generation (4G) communication system such as long term evolution (LTE). According to the present invention, a method by which a transmission device transmits a signal is a wireless communication system supporting an unlicensed band comprises the steps of: detecting the need for controlling a clear channel assessment (CCA) threshold during the performance of a CCA process; and controlling the CCA threshold used in the CCA process.
    Type: Application
    Filed: May 9, 2016
    Publication date: June 21, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jung-Min MOON, Sun-Heui RYOO, Seung-Hoon PARK, Jung-Soo JUNG
  • Publication number: 20180160343
    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: February 1, 2018
    Publication date: June 7, 2018
    Inventors: Jung-Min MOON, Anshuman NIGAM, Jung-Soo JUNG, Sun-Heui RYOO, Sung-Jin LEE
  • Publication number: 20180160357
    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: Application
    Filed: January 31, 2018
    Publication date: June 7, 2018
    Inventors: Jung-Min MOON, Nigam ANSHUMAN, Jung-Soo JUNG, Sun-Heui RYOO, Sung-Jin LEE
  • Publication number: 20180139767
    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: Application
    Filed: November 9, 2015
    Publication date: May 17, 2018
    Inventors: Sung-Jin Lee, Jung-Soo Jung, Sun-Heui Ryoo, Jung-Min Moon
  • Patent number: 9974087
    Abstract: A method for controlling a cell state corresponding to whether to transmit a signal, on a subframe basis by an evolved Node B (eNB) in a wireless communication system is provided. The method includes determining a cell state of at least one subframe included in each of an N-th frame and an (N?1)-th frame, and at the start of the N-th frame, transmitting to a user equipment (UE), information about cell states of all subframes belonging to the N-th frame and information about cell states of all subframes belonging to the (N?1)-th frame.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: May 15, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Anshuman Nigam, Jung-Soo Jung, Sun-Heui Ryoo, Jung-Min Moon, Sung-Jin Lee
  • Patent number: 9973945
    Abstract: A method and an apparatus for efficiently reporting a master information block (MIB) decoding status of a neighbor cell in a wireless communication system are provided. The method includes receiving, by a user equipment (UE) and from an evolved Node B (eNB) of a serving cell, neighbor cell-related information for receiving an MIB of the neighbor cell, based on the neighbor-cell related information, decoding, by the UE, the MIB of the neighbor cell, and transmitting, by the UE, decoding information of the MIB to the eNB of the serving cell.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: May 15, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Anshuman Nigam, Jung-Soo Jung, Sun-Heui Ryoo, Jung-Min Moon, Sung-Jin Lee
  • Publication number: 20180131473
    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: Application
    Filed: March 31, 2016
    Publication date: May 10, 2018
    Inventors: Jung-Min Moon, Seung-Hoon Park, Jung-Soo Jung, Sun-Heui Ryoo, Byoung-Hoon Jung
  • Publication number: 20180124611
    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 for transmitting data on the basis of a measurement of a channel of an unlicensed band in a mobile communication system, the method comprising the procedures of: selecting a random number for backoff counting; determining whether to decrement the random number by 1; decrementing the random number by 1 on the basis of the determining; determining whether the channel is idle by measuring the channel; completing the backoff counting if the random number becomes 0; and transmitting data by means of the channel if the backoff counting is completed.
    Type: Application
    Filed: April 8, 2016
    Publication date: May 3, 2018
    Inventors: Jung-Min Moon, Seung-Hoon Park, Sun-Heui Ryoo, Byoung-Hoon Jung, Jung-Soo Jung
  • Publication number: 20180124749
    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: April 5, 2016
    Publication date: May 3, 2018
    Inventors: Seung-Hoon PARK, Jung-Min MOON, Sun-Heui RYOO, Byoung-Hoon JUNG, Jung-Soo JUNG
  • Patent number: 9955477
    Abstract: A method for controlling a cell state corresponding to whether to transmit a signal, on a subframe basis by an evolved Node B (eNB) in a wireless communication system is provided. The method includes determining a cell state of at least one subframe included in each of an N-th frame and an (N?1)-th frame, and at the start of the N-th frame, transmitting to a user equipment (UE), information about cell states of all subframes belonging to the N-th frame and information about cell states of all subframes belonging to the (N?1)-th frame.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: April 24, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Anshuman Nigam, Jung-Soo Jung, Sun-Heui Ryoo, Jung-Min Moon, Sung-Jin Lee
  • Patent number: 9955357
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A method for adding an operating channel for a user equipment (UE) that uses an unlicensed band channel by an evolved Node B (eNB) in a mobile communication system is provided. The method includes transmitting a first sensing indicator message indicating sensing of an unlicensed band channel, to at least one UE, determining a channel state by sensing the unlicensed band channel, receiving a first feedback message including a channel sensing result of the unlicensed band channel sensed by the UE, from the at least one UE, comparing the determined channel state with the channel sensing result received from the UE, and transmitting a control message indicating addition of the unlicensed band channel to the UE based on the comparison result.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: April 24, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Min Moon, Sun-Heui Ryoo, Sung-Jin Lee, Jung-Soo Jung
  • Patent number: 9930016
    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: August 7, 2014
    Date of Patent: March 27, 2018
    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: 9924419
    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: March 20, 2015
    Date of Patent: March 20, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Min Moon, Anshuman Nigam, Jung-Soo Jung, Sun-Heui Ryoo, Sung-Jin Lee
  • Patent number: 9912804
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). An apparatus of a Base Station (BS) in a wireless communication system is provided. The apparatus includes a wireless communication unit that is configured to receive an interference signal which cannot be controlled during a first period, and all interference signals during a second period with respect to a plurality of channels and a controller configured to determine a size of an interference signal which can be controlled, using a difference between a measurement of all the interference signals during the second period and a measurement of the interference signal which cannot be controlled, and select one of the plurality of channels according to the determined size of the interference signal which can be controlled.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: March 6, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Jin Lee, Jung-Soo Jung, Sun-Heui Ryoo, Jung-Min Moon, Anshuman Nigam
  • Patent number: 9894584
    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: September 24, 2014
    Date of Patent: February 13, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Min Moon, Nigam Anshuman, Jung-Soo Jung, Sun-Heui Ryoo, Sung-Jin Lee
  • Patent number: 9883445
    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 communication method by a cellular base station is provided. A method for performing communication by a cellular base station comprises transmitting information on a set of one or more non-cellular APs associated with the cellular base station to a UE and receiving information on an event triggered based on a measurement on at least one AP in the set from the UE.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: January 30, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byoung-Hoon Jung, Seung-Hoon Park, Jung-Min Moon, Sun-Heui Ryoo, Jung-Soo Jung