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).
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Patent number: 8305967Abstract: Provided is a subframe scheduling method in which a relay may transmit interval information of a service to a base station, and the base station may modify a location of a subframe based on the interval information, and thereby preventing a quality deterioration occurring due to a retransmission failure. The subframe scheduling method may include: setting and transmitting, by a base station, subframe information; setting and implementing, by a relay, a service based on the subframe information; transmitting, by the relay, interval information of the service to the base station; modifying, by the base station, the subframe information based on the interval information; and transmitting, by the base station, the modified subframe information to the relay.Type: GrantFiled: August 5, 2010Date of Patent: November 6, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Jae Sheung Shin, Hyun Seo Park, Kyung Sook Kim, Young Jick Bahg, Yeon Seung Shin, Yeong Jin Kim
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Patent number: 8289892Abstract: Provided is a broadcast multicast service control system capable of distributively processing excessively given load under environments that have to offer MBMS service by linking with several mobile communication networks, and a control method thereof. The service control system provides a multimedia broadcast multicast service including a service announcement function of announcing service information, a security function of executing generation and distribution of keys for user authentication and information protection, and a proxy and transport function of transmitting/receiving control signals and traffics to/from a mobile communication network to provide the multimedia broadcast multicast service, and the service control system includes: a plurality of service control units, a load management unit, a service distribution policy management unit, and a processing load distribution policy management unit.Type: GrantFiled: September 7, 2007Date of Patent: October 16, 2012Assignees: Electronics and Telecommunications Research Institute, Samsung Electronics Co., Ltd.Inventors: Eun-Hee Hyun, Cheol-Hye Cho, Young-Jick Bahg
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Patent number: 8223712Abstract: Provided are a physical downlink control channel (PDCCH)-based scheduling method and apparatus suitable for use by a base station in a long-term evolution (LTE) system. The scheduling method includes: determining an aggregation level of a common search space of a PDCCH by considering channel quality of a plurality of user equipments (UEs); identifying the number of PDCCH candidates and the number of messages, which require allocation of the common search space, based on the determined aggregation level and selecting messages by a smaller number of the number of messages and the number of PDCCH candidates; and allocating PDCCH resources and physical downlink shared channel (PDSCH) resources for the selected messages. In a situation where the PDCCH resources are shared by downlink scheduling information and uplink scheduling information of different UEs, the PDCCH resource-based scheduling method can be used by the base station to efficiently utilize the PDCCH resources.Type: GrantFiled: October 28, 2009Date of Patent: July 17, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Kyung-sook Kim, Jae-sheung Shin, Hyun-seo Park, Young-jick Bahg, Yeon-seung Shin
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Publication number: 20120165032Abstract: 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: ApplicationFiled: December 22, 2011Publication date: June 28, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Soon Gi PARK, Yeon Seung SHIN, Pyeong Jung SONG, Young Jick BAHG, Yeong Jin KIM
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Patent number: 8208475Abstract: A method for scheduling packets from a plurality of radio bearers by a scheduler of a first layer includes calculating a virtual scheduling time for the radio bearers by using a packet delay variation of the radio bearers, and transmitting the packet of the radio bearer having the greatest virtual scheduling time from among the plurality of radio bearers to a second layer.Type: GrantFiled: November 30, 2007Date of Patent: June 26, 2012Assignees: Electronics and Telecommunications Research Institute, Samsung Electronics Co., Ltd.Inventors: Ji-Soo Park, Han-Jun Yoon, Dong-jin Shin, Cheol-Hye Cho, Moon-Soo Jang, Chang-Ki Kim, Young-Jick Bahg
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Patent number: 8064820Abstract: There is provided a method for a multimedia broadcast/multicast service (MBMS) announcement to provide a service announcement document in a broadcast multicast service center (BM-SC) of a MBMS system, including the steps of: generating a service announcement document; searching a service announcement area; setting a session for providing the service announcement document to the searched service area by setting a MBMS multicast bearer; transmitting a corresponding service announcement document to the service announcement area, wherein the service announcement document includes an announcement area directories according to service announcement areas, and the announcement area directory includes service directories according to services provided to corresponding service announcement areas as a lower directory.Type: GrantFiled: September 12, 2007Date of Patent: November 22, 2011Assignees: Electronics and Telecommunications Research Institute, Samsung Electronics Co., Ltd.Inventors: Eun-hee Hyun, Cheol-Hye Cho, Young-Jick Bahg
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Publication number: 20110141984Abstract: Provided is a subframe scheduling method in which a relay may transmit interval information of a service to a base station, and the base station may modify a location of a subframe based on the interval information, and thereby preventing a quality deterioration occurring due to a retransmission failure. The subframe scheduling method may include: setting and transmitting, by a base station, subframe information; setting and implementing, by a relay, a service based on the subframe information; transmitting, by the relay, interval information of the service to the base station; modifying, by the base station, the subframe information based on the interval information; and transmitting, by the base station, the modified subframe information to the relay.Type: ApplicationFiled: August 5, 2010Publication date: June 16, 2011Applicant: Electronics and Telecommunications Research InstituteInventors: Jae Sheung SHIN, Hyun Seo PARK, Kyung Sook KIM, Young Jick BAHG, Yeon Seung SHIN, Yeong Jin KIM
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Publication number: 20100309881Abstract: The present invention relates to a mobile communication system and a tunnel management method thereof. In the tunnel management method, tunnel information update request having a user equipment identifier of the user equipment is received at a serving gateway from a mobility managing device when the user equipment performs handoff. Then, tunnel information is updated by changing address information of data destination for all tunnels having the user equipment identifier.Type: ApplicationFiled: July 29, 2008Publication date: December 9, 2010Applicants: SAMSUNG ELECTRONICS CO., LTD., ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITInventors: Chang Ki Kim, Young Jick Bahg
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Publication number: 20100302997Abstract: 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: ApplicationFiled: July 16, 2008Publication date: December 2, 2010Applicants: Electronics and Telecommunications Research Insti tute, Samsung Electronics Co. LTD.Inventors: Ji-Soo Park, Cheol-Hye Cho, Sung-Hee Kim, Yeong-Jin Kim, Young-Jick Bahg
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Publication number: 20100299758Abstract: The present invention relates to the method and data sharing system which establishes an access right for data to share in pure or hybrid P2P environment and thus decides to open and share the data in accordance with which whether a recipient peer has the access right or not, thereby protecting the data from the access of the unspecified public and preventing the data from spreading in an improper manner. Also, since the existence of the data is not open to recipients with no having access right, the method and data sharing system according to the present invention has an effect of protecting the copyright and privacy of a data provider.Type: ApplicationFiled: July 29, 2008Publication date: November 25, 2010Applicants: Electronics and Telecommunications Research Institute, Samsung Electronics Co., Ltd.Inventors: Eun Hee Hyun, Sung Hee Kim, Cheol Hye Cho, Young Jick Bahg
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Publication number: 20100271949Abstract: Enclosed is traffic processing system and a method of processing traffic. A plurality of apparatuses for processing traffic are provided to disperse traffic for mobile terminals, to prevent the bottle neck phenomenon of the traffic, to effectively process the traffic, and to rapidly use the services of the mobile terminals.Type: ApplicationFiled: July 29, 2008Publication date: October 28, 2010Applicants: Samsung Electronics Co., Ltd., Electronics and Telecommunications Research InstituteInventors: Han Jun Yoon, Chang Ki Kim, Cheol Hye Cho, Young Jick Bahg
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Publication number: 20100157922Abstract: Provided are a physical downlink control channel (PDCCH)-based scheduling method and apparatus suitable for use by a base station in a long-term evolution (LTE) system. The scheduling method includes: determining an aggregation level of a common search space of a PDCCH by considering channel quality of a plurality of user equipments (UEs); identifying the number of PDCCH candidates and the number of messages, which require allocation of the common search space, based on the determined aggregation level and selecting messages by a smaller number of the number of messages and the number of PDCCH candidates; and allocating PDCCH resources and physical downlink shared channel (PDSCH) resources for the selected messages. In a situation where the PDCCH resources are shared by downlink scheduling information and uplink scheduling information of different UEs, the PDCCH resource-based scheduling method can be used by the base station to efficiently utilize the PDCCH resources.Type: ApplicationFiled: October 28, 2009Publication date: June 24, 2010Applicant: Electronics and Telecommunications Research InstituteInventors: Kyung-sook KIM, Jae-sheung SHIN, Hyun-seo PARK, Young-jick BAHG, Yeon-seung SHIN
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Publication number: 20100150049Abstract: A method for controlling and managing a bearer in a gateway of an IP-based mobile communication network is provided. A protocol message that must be sent between a mobility management entity and a gateway where a bearer exists is newly defined as context setup and IP allocation request/response messages, request/response messages for setup and release of a tunnel for service initiation and release, user equipment handover completion/completion acknowledgement messages, paging indication/response messages for a packet coming from a network, and multicast-service join/leave indication messages when the user equipment is powered on/off, resulting in high efficiency of signal protocol and efficient bearer management irrespective of separation or integration of physical nodes of the mobility management entity and the serving gateway.Type: ApplicationFiled: May 22, 2008Publication date: June 17, 2010Applicant: Electronics and Telecommunications Research InstituteInventors: Chang-ki Kim, Han-Jun Yoon, Young-Jick Bahg
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Publication number: 20100091734Abstract: A method for forwarding packets in handover between base stations (eNBs) is provided. A source eNB confirming handover success sends control data indicating an EOD of a forwarding packet to a target eNB when there are no more packets to be forwarded to the target eNB, and the target eNB receiving the control data recognizes from the control data that there are no more packets to be forwarded from the source eNB, thus preventing delay in the handover between the eNBs.Type: ApplicationFiled: July 28, 2008Publication date: April 15, 2010Applicants: Electronics and Telecommunications Research Institute, Samsung Electronics Co. LtdInventors: Ji-soo Park, Cheol-hye Cho, Yeong-jin Kim, Young-jick Bahg
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Publication number: 20100075659Abstract: Provided is an apparatus and method for transmitting user data by using a logical tunnel in an evolved UMTS network system. The method includes the steps of: a) assigning a tunnel Identifier (ID); b) creating a tunnel management table according to the tunnel ID; c) receiving downlink user data; d) creating a down-link protocol message corresponding to the down-link user data based on the tunnel ID; and e) transmitting the down-link protocol message.Type: ApplicationFiled: September 21, 2007Publication date: March 25, 2010Applicants: Electronics and Telecommunications Research Institute, Samsung Electronics Co., Ltd.Inventors: Chang-Ki Kim, Young-Jick Bahg
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Publication number: 20100077088Abstract: Provided is a broadcast multicast service control system capable of distributively processing excessively given load under environments that have to offer MBMS service by linking with several mobile communication networks, and a control method thereof. The service control system provides a multimedia broadcast multicast service including a service announcement function of announcing service information, a security function of executing generation and distribution of keys for user authentication and information protection, and a proxy and transport function of transmitting/receiving control signals and traffics to/from a mobile communication network to provide the multimedia broadcast multicast service, and the service control system includes: a plurality of service control units, a load management unit, a service distribution policy management unit, and a processing load distribution policy management unit.Type: ApplicationFiled: September 7, 2007Publication date: March 25, 2010Inventors: Eun-Hee Hyun, Cheol-Hye Cho, Young-Jick Bahg
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Publication number: 20100008299Abstract: Provided are an Internet protocol (IP) converged mobile access gateway for a 3rd generation (3G) mobile service and a service method using the same. The IP converged mobile access gateway including: an access controller adapted to exchange a control signal with the base station and perform mobility control for the terminal and session control for a service request; a transport controller adapted to perform routing database information management and routing protocol processing for packet routing; and a transport executor adapted to set a tunnel with the base station for user data transmission according to control information sent from the access controller, configure a packet data convergence protocol (PDCP) for a logical connection with the terminal, and interwork with the transport controller to perform packet routing and forwarding.Type: ApplicationFiled: December 3, 2007Publication date: January 14, 2010Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, SAMSUNG ELECTRONICS CO.,LTD.Inventors: Dong-Jin Shin, Young-Jick Bahg, Yeong-Jim Kim
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Publication number: 20100002632Abstract: A method for scheduling packets from a plurality of radio bearers by a scheduler of a first layer includes calculating a virtual scheduling time for the radio bearers by using a packet delay variation of the radio bearers, and transmitting the packet of the radio bearer having the greatest virtual scheduling time from among the plurality of radio bearers to a second layer.Type: ApplicationFiled: November 30, 2007Publication date: January 7, 2010Applicants: Electronics and Telecommunications Research Institute, Samsung Electronics Co., Ltd.Inventors: Ji-Soo Park, Han-Jun Yoon, Dong-Jin Shin, Cheol-Hye Cho, Moon-Soo Jang, Chang-Ki Kim, Young-Jick Bahg
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Patent number: RE42996Abstract: 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: GrantFiled: November 4, 2009Date of Patent: December 6, 2011Assignee: Pantech Co., Ltd.Inventors: Eun-Hee Hyun, Young-Jick Bahg
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Patent number: RE43789Abstract: 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: GrantFiled: November 21, 2011Date of Patent: November 6, 2012Assignee: Pantech Co., Ltd.Inventors: Eun-Hee Hyun, Young-Jick Bahg