Patents by Inventor Young-Jick Bahg

Young-Jick Bahg 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: 10687378
    Abstract: An operation method of a transmitting apparatus in a multi-connection based mobile communication system includes generating combined data by combining data and an extended information element (IE), when the data received from a serving gate way (SGW) or a core network is determined to be transmitted to a receiving apparatus; transmitting the combined data to the receiving apparatus; and receiving, from the receiving apparatus, feedback information indicating whether or not the receiving apparatus normally receives the combined data.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: June 16, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sung Kyung Kim, Young Jick Bahg, Jee Hyeon Na
  • Publication number: 20190166641
    Abstract: An operation method of a transmitting apparatus in a multi-connection based mobile communication system includes generating combined data by combining data and an extended information element (IE), when the data received from a serving gate way (SGW) or a core network is determined to be transmitted to a receiving apparatus; transmitting the combined data to the receiving apparatus; and receiving, from the receiving apparatus, feedback information indicating whether or not the receiving apparatus normally receives the combined data.
    Type: Application
    Filed: November 8, 2018
    Publication date: May 30, 2019
    Inventors: Sung Kyung KIM, Young Jick BAHG, Jee Hyeon NA
  • Patent number: 9686711
    Abstract: According to an exemplary embodiment of the present invention, a master base station selects a target serving cell in which a state is changed, among the serving cells of at least one slave base station set in the terminal, generates a MAC control element which instructs a state change of the target serving cell, and then directly transmits the MAC control element to the terminal in the case of an uplink asynchronous state between the target slave base station managing the target serving cell and the terminal.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: June 20, 2017
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kyung Sook Kim, Sang Chul Oh, Young Jick Bahg, Yeon Seung Shin, Pyeong Jung Song
  • Patent number: 9479992
    Abstract: A carrier aggregation-based interference control method and apparatus for small base stations are disclosed. The present invention comprises setting a primary component carrier (PCC) as a first carrier and setting a secondary component carrier (SCC) as a second carrier, monitoring a signal-to-interference plus noise ratio (SINR) of the first carrier or the second carrier, and determining whether the SINR of the first carrier is smaller than a predetermined threshold.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: October 25, 2016
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sang Chul Oh, Kyung Sook Kim, Sung Hyun Moon, Seung Que Lee, Young Jick Bahg, Byung Han Ryu, Nam Hoon Park
  • Patent number: 9426723
    Abstract: An integrated base station which is a combination of a small cell base station and a wireless LAN access point is provided. The integrated base station includes: a small cell antenna that transmits and receives a small cell broadcast signal; a wireless LAN antenna that transmits and receives a wireless LAN signal; a small cell communication unit that broadcasts small cell broadcast information including wireless LAN access point information via the small cell antenna; and a wireless LAN communication unit that receives a wireless LAN report including a small cell camp-on report from a terminal that has received the small cell broadcast information, and passes the small cell camp-on report to the small cell communication unit.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: August 23, 2016
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seung-Que Lee, Byung-Han Ryu, Young Jick Bahg
  • Patent number: 9258037
    Abstract: Provided is a method of managing mobility of a user equipment. The method includes: establishing by a first base station a communication with the user equipment; transmitting by the first base station a Coordinated Multiple Point (CoMP) addition request to a second base station; establishing by the first and second base stations a CoMP communication with the user equipment according to the CoMP addition request; transmitting by the first base station an anchor cell change request to the second base station; and operating the second base station as an anchor cell of the CoMP communication according to the anchor cell switch request.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: February 9, 2016
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: SoonGi Park, Byung-Han Ryu, Nam Hoon Park, Jun Sik Kim, Sang Chul Oh, Hong Soog Kim, Kyung Sook Kim, Young Jick Bahg, Sung Gu Choi
  • Publication number: 20150289177
    Abstract: An integrated base station which is a combination of a small cell base station and a wireless LAN access point is provided. The integrated base station includes: a small cell antenna that transmits and receives a small cell broadcast signal; a wireless LAN antenna that transmits and receives a wireless LAN signal; a small cell communication unit that broadcasts small cell broadcast information including wireless LAN access point information via the small cell antenna; and a wireless LAN communication unit that receives a wireless LAN report including a small cell camp-on report from a terminal that has received the small cell broadcast information, and passes the small cell camp-on report to the small cell communication unit.
    Type: Application
    Filed: February 19, 2015
    Publication date: October 8, 2015
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seung-Que LEE, Byung-Han RYU, Young Jick BAHG
  • Publication number: 20150230221
    Abstract: According to an exemplary embodiment of the present invention, a master base station selects a target serving cell in which a state is changed, among the serving cells of at least one slave base station set in the terminal, generates a MAC control element which instructs a state change of the target serving cell, and then directly transmits the MAC control element to the terminal in the case of an uplink asynchronous state between the target slave base station managing the target serving cell and the terminal.
    Type: Application
    Filed: February 2, 2015
    Publication date: August 13, 2015
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kyung Sook KIM, Sang Chul OH, Young Jick BAHG, Yeon Seung SHIN, Pyeong Jung SONG
  • Publication number: 20150230250
    Abstract: An apparatus for allocating resources of a cell allocates some of the entire frequency band for a D2D link in the entire zone of the cell, allocates the rest of the entire frequency band for a cellular link in at least some zone of the cell, and allocates time resources different from those of D2D links of adjacent cells to the D2D link.
    Type: Application
    Filed: January 21, 2015
    Publication date: August 13, 2015
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyung-sub KIM, JeeHyeon NA, Young Jick BAHG, Yeon Seung SHIN
  • Patent number: 9042892
    Abstract: Disclosed is an operating method of a base station which includes searching user equipment, having a machine to machine (hereinafter, referred to as M2M) communication function, from user equipment under communication; sending an M2M call setup request to the searched user equipment; sending a handover call setup request to the remaining user equipment from among the user equipment under communication; and entering a power-saving mode.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: May 26, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sung Gu Choi, Young Jick Bahg, SoonGi Park, Kyung Sook Kim, Hyung-sub Kim, Byung-Han Ryu, Nam Hoon Park
  • Publication number: 20150055629
    Abstract: A carrier aggregation-based interference control method and apparatus for small base stations are disclosed. The present invention comprises setting a primary component carrier (PCC) as a first carrier and setting a secondary component carrier (SCC) as a second carrier, monitoring a signal-to-interference plus noise ratio (SINR) of the first carrier or the second carrier, and determining whether the SINR of the first carrier is smaller than a predetermined threshold.
    Type: Application
    Filed: December 4, 2013
    Publication date: February 26, 2015
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sang Chul OH, Kyung Sook KIM, Sung Hyun MOON, Seung Que LEE, Young Jick BAHG, Byung Han RYU, Nam Hoon PARK
  • Patent number: 8942714
    Abstract: A method of controlling femtocell interference considering a macrocell is provided. The method of controlling the interference includes a method of setting transmission power of the femtocell and methods of avoiding the interference of the femtocell. The methods of avoiding the interference include a PRB rotation method, a PRB transmission power restriction method, a hybrid method and a UB rotation method. The method of setting the transmission power and the methods of avoiding the interference may be implemented independently or implemented in combination with each other. Hence, according to the present invention, the femtocell itself can control the interference without affecting an interface of an existing macrocell base station and without signaling through the interface with the macrocell.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: January 27, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Soon Gi Park, Yeon Seung Shin, Pyeong Jung Song, Young Jick Bahg, Yeong Jin Kim
  • Publication number: 20140308953
    Abstract: The present invention relates to a method and apparatus for managing radio resources in a multi-carrier and heterogeneous network-integrated radio access environment. A method of managing radio resources in a BS supporting multiple carriers includes sending an RRC connection reconfiguration message, including measurement control information, to UE, receiving a measurement report, including a measurement result for an HetNet RAT cell, from the UE, determining to configure HetNet RAT bearer connection with the UE based on the measurement report, sending an RRC connection reconfiguration message, requesting to configure the HetNet RAT bearer connection, to the UE, and sending some of or the entire traffic for the UE, to the UE through the HetNet RAT bearer. If overload or interference occurs in a serving cell, some of or the entire traffic is transmitted through a cell based on HetNet RAT, if necessary. Accordingly, load balancing or interference coordination can be achieved.
    Type: Application
    Filed: December 10, 2013
    Publication date: October 16, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Soon Gi PARK, Young Jick BAHG, Byung Han RYU, Nam Hoon PARK, Dong Seung KWON
  • Publication number: 20140293888
    Abstract: The present invention relates to a method of selecting, by an eNB, a PCC for UE in a multiple component carrier system. The method includes obtaining mobility state information about the UE and coverage information and load information about carriers managed by the eNB; determining whether or not a mobility state value of the UE is greater than a specific threshold based on the obtained mobility state information; and selecting the PCC based on the load information if, as a result of the determination, the mobility state value is greater than the specific threshold. In accordance with the present invention, a BS adaptively selects a PCC by taking the load state of a carrier (or cell), UE mobility velocity, and the coverage of each carrier (or cell) into consideration.
    Type: Application
    Filed: November 21, 2013
    Publication date: October 2, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sang Chul OH, Kyung Sook KIM, Sung Hyun MOON, Young Jick BAHG, Byung Han RYU
  • Publication number: 20140295826
    Abstract: The present invention relates to a method and apparatus for controlling traffic which can be applied to the next generation mobile communication system. The method includes determining whether or not a load state of a cell is greater than a threshold, determining whether or not UE capable of D2D communication is present in UEs connected to the cell if, as a result of the determination, it is determined that the load state is greater than the threshold, performing a D2D communication configuration on the UE capable of D2D communication, determining whether or not UE capable of handover is present in remaining UEs not capable of the D2D communication, and performing a handover communication configuration on the UE capable of handover. According to the present invention, a signaling overload due to the simultaneous handover of a plurality of UEs or congestion of traffic in a target cell can be prevented.
    Type: Application
    Filed: December 9, 2013
    Publication date: October 2, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sung Gu CHOI, Young Jick BAHG, Byung Han RYU, Nam Hoon PARK
  • Patent number: 8705499
    Abstract: A wireless access router for separately controlling a traffic signal and a control signal is provided. In a mobile communication access network structure, in order to optimally support a mobile communication terminal, a control signal and a traffic signal of a base station are divided, and a router is controlled by mobile communication system functions such as a mobility management function, a QoS management function, a session control of the terminal, a mobility control, and a QoS control function that are effectively processed. With a wireless access router having the divided control signal and traffic signal, it is expected the traffic concentration and a packet transmission delay can be prevented.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: April 22, 2014
    Assignees: Electronics and Telecommunications Research Institute, SK Telecom Co., Ltd., KT Corporation
    Inventors: Dong-jin Shin, Young-Jick Bahg, Yeong-Jin Kim
  • Publication number: 20130157712
    Abstract: Provided is a method of managing mobility of a user equipment. The method includes: establishing by a first base station a communication with the user equipment; transmitting by the first base station a Coordinated Multiple Point (CoMP) addition request to a second base station; establishing by the first and second base stations a CoMP communication with the user equipment according to the CoMP addition request; transmitting by the first base station an anchor cell change request to the second base station; and operating the second base station as an anchor cell of the CoMP communication according to the anchor cell switch request.
    Type: Application
    Filed: September 13, 2012
    Publication date: June 20, 2013
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: SoonGi PARK, Byung-Han RYU, Nam Hoon PARK, Jun Sik KIM, Sang Chul OH, Hong Soog KIM, Kyung Sook KIM, Young Jick BAHG, Sung Gu CHOI
  • Patent number: 8462692
    Abstract: A system and method for reassembling packets in a packet relay node are provided. A packet relay node located between a transmitting node (i.e., a source node) and a receiving node (i.e., a destination node) inspects received packets to see if they are fragmented packets and reassembles a series of packets decided to be fragmented packets into an original packet, thereby reducing overhead and radio resource waste caused by duplicate transmission of IP headers having the same fragmented-packet information.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: June 11, 2013
    Assignees: Samsung Electronics Co., Ltd., Electronics and Telecommunications Research Institute
    Inventors: Ji-Soo Park, Cheol-Hye Cho, Sung-Hee Kim, Yeong-Jin Kim, Young-Jick Bahg
  • Patent number: RE44169
    Abstract: A method for supporting session mobility, more particularly, a method for supporting session mobility that can move various sessions between two or more devices by using session initiation protocol (SIP). Various sessions can be simultaneously moved by utilizing a SIP PUBLISH message. Accordingly, a user can utilize various services as they are regardless of changing of service receiving device while the user utilizes various services. Also, the session mobility can be effectively supported whether the target of the session movement is known or not.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: April 23, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hyun-Seo Park, Je-Hun Rhee, Kyung-Sook Kim, Sook-Yang Kang, Young-Jick Bahg, Gyung-Chul Shin
  • Patent number: RE44620
    Abstract: Disclosed are an SIP-based user mobility service providing apparatus and method using user position information obtained by a sensing apparatus. When a user enters a specific region, a gateway including a sensing management module carries out SIP registration for several terminals existing in the specific region in place of user agents of the terminals. The sensing management module transmits an SIP registration message to an SIP proxy server and notifies the terminals of the completion of SIP registration. Then, the user receives a call using the same kind of a terminal as a specific terminal previously set on the basis of a user's preferences among the terminals in the specific region.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: December 3, 2013
    Assignee: Pantech Co., Ltd.
    Inventors: Eun-Hee Hyun, Young-Jick Bahg