Patents by Inventor Hyung-Deug Bae
Hyung-Deug Bae 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: 20180234920Abstract: A method and a terminal for performing a discontinuous reception (DRX) mode include measuring reception strength of a reference signal transmitted by a base station, determining a coverage level and a length of a warming-up time using the reception strength, and starting a DRX timer determined based on the coverage level and the length of the warming-up time.Type: ApplicationFiled: December 11, 2017Publication date: August 16, 2018Inventor: Hyung Deug BAE
-
Patent number: 9357573Abstract: A method of providing service continuity between cellular communication and device-to-device communication is disclosed. A procedure for switching between cellular communication and device-to-device communication according to an example embodiment of the present invention may include transferring, by a gateway, a D2D bearer creation request message to an MME, transferring, by the MME, the D2D bearer creation request message to a base station, mapping, by the base station, D2D bearer QoS to D2D radio bearer QoS and transmitting an RRC connection reconfiguration message to terminals, receiving, by the base station, an RRC connection reconfiguration completion message indicating creation of a D2D radio bearer from the terminals, transmitting, by the base station, a D2D bearer creation response message indicating creation of a D2D bearer to the MME, and transferring, by the MME, the D2D bearer creation response message to the gateway.Type: GrantFiled: November 26, 2013Date of Patent: May 31, 2016Assignee: Electronics and Telecommunications Research InstituteInventors: You Sun Hwang, Kwang Ryul Jung, Mi Jeong Yang, Hyung Deug Bae, Soon Yong Lim, Moon Soo Jang, Hyeong Jun Park, Nam Hoon Park
-
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
-
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
-
Publication number: 20140194115Abstract: A method for discovery in device-to-device communications and an apparatus for the same are disclosed. The method performed in a device-to-device server supporting device-to-device discovery between a discovery terminal and a discoverable terminal may include receiving a device-to-device discovery participation message from the discoverable terminal, requesting a gateway to measure a proximity between the discovery terminal and the discoverable terminal, receiving a proximity measurement result from the gateway, and requesting the discovery terminal and the discoverable terminal to initiate a procedure of device-to-device discovery when the proximity measurement result satisfies a predetermined threshold. Thus, the procedure of device-to-device discovery may be performed efficiently.Type: ApplicationFiled: January 7, 2014Publication date: July 10, 2014Applicant: Electronics & Telecommunications Research InstituteInventors: Mi Jeong YANG, Soon Yong LIM, Kwang Ryul JUNG, Hyung Deug BAE, You Sun HWANG, Moon Soo JANG, Hyeong Jun PARK, Nam Hoon PARK
-
Publication number: 20140162633Abstract: A method of providing service continuity between cellular communication and device-to-device communication is disclosed. A procedure for switching between cellular communication and device-to-device communication according to an example embodiment of the present invention may include transferring, by a gateway, a D2D bearer creation request message to an MME, transferring, by the MME, the D2D bearer creation request message to a base station, mapping, by the base station, D2D bearer QoS to D2D radio bearer QoS and transmitting an RRC connection reconfiguration message to terminals, receiving, by the base station, an RRC connection reconfiguration completion message indicating creation of a D2D radio bearer from the terminals, transmitting, by the base station, a D2D bearer creation response message indicating creation of a D2D bearer to the MME, and transferring, by the MME, the D2D bearer creation response message to the gateway.Type: ApplicationFiled: November 26, 2013Publication date: June 12, 2014Applicant: Electronics and Telecommunications Research InstituteInventors: You Sun HWANG, Kwang Ryul JUNG, Mi Jeong YANG, Hyung Deug BAE, Soon Yong LIM, Moon Soo JANG, Hyeong Jun PARK, Nam Hoon PARK
-
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
-
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
-
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
-
Patent number: 8515394Abstract: Disclosed is a method for controlling access of subscribers of a gateway in a communication system supporting a femto cell, the method including: by user equipment (UE), receiving a first access request message, which makes a request to access a femto base station (BS), from the femto BS; directly acquiring a business subscriber database (DB), which includes a list of UE admittable to access the femto BS, from a DB module; and determining whether to admit the access of the UE on the basis of the business subscriber DB, wherein the determining whether to admit the access of the UE includes admitting the access of the UE if a user equipment identifier (UE ID) for identifying the UE is included in the list of UE.Type: GrantFiled: December 20, 2011Date of Patent: August 20, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Hyung Deug Bae, Nam Hoon Park
-
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
-
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
-
Patent number: 8401549Abstract: Provided is an apparatus for searching accessible wireless networks in a software-defined radio (SDR) terminal, a method thereof, and a computer-readable recording medium for storing a program executing the method. The apparatus includes: a hardware platform; a network search executable code storing means for storing a network search executable code having at least one of mode search executable codes; a search shape information storing unit for storing search shape information necessary for network search; a network search control means for arranging each of the mode search executable codes from the network search executable code storing means at the hardware platform by using the search shape information from the search shape information storing means and searching a network according to a search mode by executing the arranged mode search executable codes; and a network search result storing means for storing network search results from the network search control means.Type: GrantFiled: September 17, 2007Date of Patent: March 19, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Hyung-Deug Bae, Nam-Hoon Park, Dae-Sik Kim
-
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
-
Publication number: 20120165027Abstract: Provided is a terminal to transmit wireless environment measurement information to a femto base station, and the femto base station to receive the wireless environment measurement information from the terminal. The femto base station may perform initialization based on the wireless environment measurement information, or may transmit the wireless environment measurement information to a base station control unit. The base station control unit may determine whether to additionally install a second femto base station based on the wireless environment measurement information.Type: ApplicationFiled: December 19, 2011Publication date: June 28, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Jun Sik KIM, Kyong Tak CHO, Sang Chul OH, Hyung Deug BAE, Seung Que LEE, Nam Hoon PARK
-
Publication number: 20120157077Abstract: 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: ApplicationFiled: December 19, 2011Publication date: June 21, 2012Applicant: Electronics and Telecommunications Research instituteInventors: Seung Que LEE, Hyung Deug BAE, Jun Sik KIM, Sang Chul OH, Kyong Tak CHO, Nam Hoon PARK
-
Publication number: 20120157051Abstract: Disclosed is a method for controlling access of subscribers of a gateway in a communication system supporting a femto cell, the method including: by user equipment (UE), receiving a first access request message, which makes a request to access a femto base station (BS), from the femto BS; directly acquiring a business subscriber database (DB), which includes a list of UE admittable to access the femto BS, from a DB module; and determining whether to admit the access of the UE on the basis of the business subscriber DB, wherein the determining whether to admit the access of the UE includes admitting the access of the UE if a user equipment identifier (UE ID) for identifying the UE is included in the list of UE.Type: ApplicationFiled: December 20, 2011Publication date: June 21, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Hyung Deug BAE, Nam Hoon PARK
-
Publication number: 20120157154Abstract: 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: ApplicationFiled: December 20, 2011Publication date: June 21, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Kyong Tak CHO, Jun Sik KIM, Seung Que LEE, Hyung Deug BAE, Sang Chul OH, Nam Hoon PARK
-
Patent number: 8171273Abstract: A method and apparatus for reconfiguring software in a software-based wireless terminal when a new wireless communication service is to be carried out is provided. The method of reconfiguring software at a software defined radio (SDR) terminal including one or more reconfigurable elements, includes: indentifying program installation time and program startup time with respect to the respective reconfigurable elements, selecting a reconfigurable element from the one or more reconfigurable elements based on the program installation time and the program startup time, and placing a program on the selected reconfigurable element. Accordingly, time for installing a new wireless communication service can be reduced in the SDR mobile communication terminal. Thus, convenience can be provided to a user.Type: GrantFiled: September 1, 2009Date of Patent: May 1, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Hyung-deug Bae, Nam-hoon Park
-
Patent number: 8165165Abstract: Provided are an apparatus for a dynamic header compression and a method thereof. The method for a dynamic header compression includes: receiving a received packet having a header from an upper layer; comparing header information of the received packet with header information of a previous packet; when a suppression part of the received packet is the same as a suppression part of the previous packet, compressing the received packet based on a predetermined header suppression rule; and when the suppression part of the received packet is not the same as the suppression part of the previous packet, transmitting the received packet without compression.Type: GrantFiled: March 30, 2009Date of Patent: April 24, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Hyung-Deug Bae, Nam-Hoon Park