Patents by Inventor Seung-Que Lee
Seung-Que Lee 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: 9479992Abstract: 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: GrantFiled: December 4, 2013Date of Patent: October 25, 2016Assignee: Electronics and Telecommunications Research InstituteInventors: Sang Chul Oh, Kyung Sook Kim, Sung Hyun Moon, Seung Que Lee, Young Jick Bahg, Byung Han Ryu, Nam Hoon Park
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Patent number: 9426723Abstract: 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: GrantFiled: February 19, 2015Date of Patent: August 23, 2016Assignee: Electronics and Telecommunications Research InstituteInventors: Seung-Que Lee, Byung-Han Ryu, Young Jick Bahg
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Publication number: 20160219625Abstract: Disclosed is a method for detecting cell camp-on and camp-off of a mobile terminal, in which a base station provides an effective zone based service by directly and simply detecting small cell camp-on and camp off of the mobile terminal without a help from a core network, that is, without a separate NAS message under a small cell environment of a mobile communication system by enhancing a tracking area update request processing scheme of the mobile terminal.Type: ApplicationFiled: March 18, 2015Publication date: July 28, 2016Applicant: Electronics and Telecommunications Research InstituteInventors: Seung Que LEE, Dong Seung KWON, Jin Up KIM
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Patent number: 9363718Abstract: Disclosed is an inter-cell interference control method and apparatus. The inter-cell interference control method includes providing handover request information including interference information to a source base station, receiving handover completion information in accordance with the handover request information from at least one of the source base station and a target base station, and receiving interference control information in accordance with the interference information from the target base station. According to the present invention, inter-cell interference may be efficiently controlled, and overall performance of a network may be improved.Type: GrantFiled: October 8, 2013Date of Patent: June 7, 2016Assignee: Electronics and Telecommunications Research InstituteInventors: Seung Que Lee, Byung Han Ryu, Nam Hoon Park
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Publication number: 20150289177Abstract: 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: ApplicationFiled: February 19, 2015Publication date: October 8, 2015Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Seung-Que LEE, Byung-Han RYU, Young Jick BAHG
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Publication number: 20150055629Abstract: 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: ApplicationFiled: December 4, 2013Publication date: February 26, 2015Applicant: Electronics and Telecommunications Research InstituteInventors: Sang Chul OH, Kyung Sook KIM, Sung Hyun MOON, Seung Que LEE, Young Jick BAHG, Byung Han RYU, Nam Hoon PARK
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Patent number: 8880074Abstract: Disclosed is an operating method of a femto base station which includes broadcasting a plurality of public land mobile network (PLMN) identities; broadcasting a plurality of closed subscriber group (CSG) identities correlated with the plurality of PLMN identities; and establishing wireless communication with user equipment based on the broadcasted PLMN and CSG identities.Type: GrantFiled: July 23, 2012Date of Patent: November 4, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Sang Chul Oh, Seung-Que Lee, Hyung Deug Bae, Jun Sik Kim, Kyong Tak Cho, Byung-Han Ryu, Nam Hoon Park
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Publication number: 20140315566Abstract: Provided are a method and apparatus for controlling inter-cell interference. In accordance with the present invention, a Wi-Fi signal including interference control information is received from a neighboring cell, the interference control information is transmitted to a small cell transmission/reception module, and a small cell signal is transmitted or received by controlling inter-cell interference based on the interference control information.Type: ApplicationFiled: November 19, 2013Publication date: October 23, 2014Applicant: Electronics and Telecommunications Research InstituteInventors: Seung Que LEE, Sang Chul OH, Kyung Sook KIM, Sung Hyun MOON, Byung Han RYU, Nam Hoon PARK
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Patent number: 8843138Abstract: A method and an apparatus for controlling transmission power in a femto base station is provided. The method includes: predicting femto base station interference to be given from an adjacent femto base station to a terminal; predicting macro base station interference to be given from a macro base station to the terminal; determining transmission power for the terminal; and transmitting a downlink signal to the terminal on the basis of the transmission power, wherein the femto base station interference is predicted on the basis of a distance between serving femto base station and the adjacent femto base station and the transmission power of the adjacent femto base station, and the macro base station interference is predicted on the basis of a distance between serving femto base station and the macro base station and the transmission power of the macro base station.Type: GrantFiled: December 20, 2011Date of Patent: September 23, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Kyong Tak Cho, Jun Sik Kim, Seung Que Lee, Hyung Deug Bae, Sang Chul Oh, Nam Hoon Park
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Publication number: 20140162653Abstract: Disclosed is an inter-cell interference control method and apparatus. The inter-cell interference control method includes providing handover request information including interference information to a source base station, receiving handover completion information in accordance with the handover request information from at least one of the source base station and a target base station, and receiving interference control information in accordance with the interference information from the target base station. According to the present invention, inter-cell interference may be efficiently controlled, and overall performance of a network may be improved.Type: ApplicationFiled: October 8, 2013Publication date: June 12, 2014Applicant: Electronics & Telecommunications Research InstituteInventors: Seung Que LEE, Byung Han Ryu, Nam Hoon Park
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Patent number: 8738007Abstract: Provided is a method of admission control for a hybrid femtocell in a wireless communication system, in which the method is applied to a wireless communication system including a hybrid femto base station and a core network performing admission control of a mobile station terminal in a femtocell of the hybrid femto base station. The method of admission control for a hybrid femtocell performed by a core network according to an exemplary embodiment of the present invention includes determining whether a mobile station terminal has membership; determining whether speed information of the mobile station terminal exists; and assigning a probability value to the mobile station terminal depending on the membership and the speed information of the mobile station terminal.Type: GrantFiled: September 15, 2011Date of Patent: May 27, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Seung Que Lee, Nam Hoon Park, Yeong Jin Kim
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Patent number: 8606310Abstract: A method for controlling interference between base stations in a radio communication system in which an indirect interface for indirectly connecting the base stations exists and an direct interface for directly connecting the base stations does not exist, the method includes: converting a first interference control message used in the direct interface into a format of a protocol of the indirect interface to thereby generate a second interference control message; and transmitting the second interference control message through the indirect interface.Type: GrantFiled: August 20, 2010Date of Patent: December 10, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Sang Chul Oh, Seung-Que Lee, Hyung Deug Bae, Jun Sik Kim, Nam Hoon Park
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Patent number: 8588189Abstract: Disclosed are a terminal of an OFDMA-TDMA wireless Internet system capable of reducing transmission delay time while securing QoS for uplink data and a packet transmission method. A MAC layer of the terminal is divided into a MAC software part and a MAC hardware part to control priorities of data packets at a high level and low level. The high level priority controller carries out various fine control operations according to a QoS policy and the low level priority controller performs mechanical control operations based on a predetermined simple fixed priority policy.Type: GrantFiled: September 22, 2004Date of Patent: November 19, 2013Assignees: Electronics and Telecommunications Research Institute, Samsung Electronics Co., Ltd, KT Corporation, SK Telecom Co., Ltd, KTFreetel Co., Ltd, Hanaro Telecom., Inc.Inventors: Seung-Que Lee, Nam-Hoon Park, Jee-Hwan Ahn, Choong-Ho Cho
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Patent number: 8559390Abstract: Disclosed are a method and apparatus for allowing a Software Defined Radio (SDR) terminal to perform a vertical handover between different services. The vertical handover method includes: receiving a handover request from an application service which is currently being executed; selecting a new application service which is a handover target from among a plurality of application services, in response to the handover request; installing the new application service in the SDR terminal so that the new application service is executable by the SDR terminal; and performing a handover to the new application service. Accordingly, since handover is performed seamlessly between different services, continuity of service may be ensured.Type: GrantFiled: October 16, 2009Date of Patent: October 15, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Seung-que Lee, Nam-hoon Park, Yeong-jin Kim
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Patent number: 8538406Abstract: Disclosed is a method of operating a femto base station (BS) in a wireless communication system, the method comprising: receiving an access request comprising a closed subscriber group (CSG) identifier (ID) from user equipment (UE); determining a number N of UE accessing the femto BS; ascertaining an access type to determine whether the UE is a CSG UE or a non-CSG UE of the femto BS on the basis of the CSG ID of the UE; and determining whether to admit access of the UE on the basis of the access type, the N and access admittable information, the access admittable information comprising UCSG, i.e., a maximum number of CSG UE of which access is admitted; UALL, i.e., a maximum number of non-CSG UE of which access is admitted; and UMAX, i.e., a maximum number of UE of which access is admitted.Type: GrantFiled: December 19, 2011Date of Patent: September 17, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Seung Que Lee, Hyung Deug Bae, Jun Sik Kim, Sang Chul Oh, Kyong Tak Cho, Nam Hoon Park
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Patent number: 8532029Abstract: A Transport Network Layer (TNL) connection setup method for a base station includes monitoring Physical Cell Identity (PCI) values of neighboring cells. When it is monitored that the PCI values are changed, IP addresses of neighboring base stations corresponding to the changed PCI values are acquired. Thereafter, it is determined whether it is necessary to perform a new TNL connection setup with respect to other neighboring base stations, based on the changed PCI values and the acquired IP addresses. When it is determined that it is necessary to perform the new TNL connection setup, the TNL connection setup is performed with the acquired IP addresses.Type: GrantFiled: August 3, 2010Date of Patent: September 10, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Sang Chul Oh, Seung-Que Lee, Hyung Deug Bae, Jun Sik Kim, Nam Hoon Park
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Publication number: 20130210439Abstract: Provided are a mobile communication system comprising a femto base station for transmitting system information, and a terminal for receiving the system information from the femto base station. The terminal receives the system information from the femto base station, and during other times, receives data from a serving macro base station.Type: ApplicationFiled: October 21, 2011Publication date: August 15, 2013Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hyung Deug Bae, Kyong Tak Cho, Sang Chul Oh, Jun Sik Kim, Seung Que Lee, Nam Hoon Park
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Publication number: 20130150042Abstract: Disclosed is an operating method of a femto base station which includes broadcasting a plurality of public land mobile network (PLMN) identities; broadcasting a plurality of closed subscriber group (CSG) identities correlated with the plurality of PLMN identities; and establishing wireless communication with user equipment based on the broadcasted PLMN and CSG identities.Type: ApplicationFiled: July 23, 2012Publication date: June 13, 2013Applicant: Electronics and Telecommunications Research InstituteInventors: Sang Chul OH, Seung-Que Lee, Hyung Deug Bae, Jun Sik Kim, Kyong Tak Cho, Byung-Han Ryu, Nam Hoon Park
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Patent number: 8355719Abstract: A method for setting base station information of a femtocell base station includes: upon a power application to the femtocell base station, setting all or some of terminals accessing the femtocell base station as console terminals; and receiving a radio environment parameter related to radio environment around each console terminal from the console terminals through a communication interface unit. The method further includes setting the base station information including an operation mode of the femtocell base station and a cell identifier of a femtocell covered by the femtocell base station based on the first radio environment parameter.Type: GrantFiled: October 21, 2010Date of Patent: January 15, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Jun Sik Kim, Sang Chul Oh, Hyung Deug Bae, Seung-Que Lee, Nam Hoon Park
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Patent number: 8306559Abstract: A method for paging optimization in a communication system having one or more base stations and one or more mobile stations within a paging target cell, includes detecting a hybrid base station supporting a hybrid cell from the one or more base stations; and determining whether or not one or more mobile stations registered in the hybrid cell include only closed subscriber group (CSG) members, and defining an operating state of the hybrid base station based on the determination result. The method further includes determining whether or not each of the one or more base stations is included in paging targets based on the operating state of the hybrid base station.Type: GrantFiled: June 21, 2010Date of Patent: November 6, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Seung-Que Lee, Hyung Deung Bae, Jun Sik Kim, Sang Chul Oh, Nam Hoon Park