Patents by Inventor Jin-Up Kim

Jin-Up Kim 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: 9496899
    Abstract: Provided are a bandpass sampling receiver and a filter design and reconfiguration method thereof. The bandpass sampling receiver includes: an analog-digital converter converting an analog wireless signal into a digital baseband signal; and a complex baseband signal extraction unit generating a first path signal and a second path signal from the digital baseband signal and extracting a complex baseband signal using a relative sample delay difference between the first and second path signals, wherein the first path signal is a down sampled signal after the digital baseband signal is sample-delayed and the second path signal is a down sampled signal without sample-delaying the digital baseband signal.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: November 15, 2016
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seok Seo, Jin Up Kim
  • Publication number: 20160219625
    Abstract: 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: Application
    Filed: March 18, 2015
    Publication date: July 28, 2016
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Seung Que LEE, Dong Seung KWON, Jin Up KIM
  • Publication number: 20160191129
    Abstract: Provided are multiple polarized input multiple output system and method for wireless communication which are capable of simultaneously transmitting respective data streams to a plurality of users by transmitting from multiple polarized input to multiple output in proportion to the number of polarized antennas or the number of polarizations used in a transmitter.
    Type: Application
    Filed: November 16, 2015
    Publication date: June 30, 2016
    Inventors: Go San NOH, Seung Jae BAHNG, Jin Up KIM, Youn Ok PARK, Chang Yong SHIN
  • Patent number: 8976916
    Abstract: Disclosed is a dual band receiver which includes an analog-to-digital converter configured to convert a dual band analog RF signal into a dual baseband digital signal; and a first signal extractor configured to generate a first path signal and a second path signal from the dual baseband signal and to extract a first baseband signal using a relative sample delay difference between the first and second path signals, wherein the dual baseband signal includes the first baseband signal and a second baseband signal, the first path signal is a signal obtained by sample delay of the dual baseband signal and then down sampling of a resultant signal, and the second path signal is a signal obtained by down sampling of the dual baseband signal without sample delay.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: March 10, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seok Seo, Hyung-Jung Kim, Jin Up Kim
  • Patent number: 8897775
    Abstract: A method of searching a femtocell access point includes: transmitting configuration/measurement information an operating frequency and a transmission power strength from multiple femtocell access points located within the macro cell to an OSM)/CPC server; and receiving, at the OSM/CPC server, the configuration/measurement information from the femtocell access points, and generating a femtocell access point list usable in a mobile terminal to provide the generated femtocell access point list to the mobile terminal. The method further includes selecting, at the mobile terminal, one femtocell access point from the femtocell access point list provided from the OSM/CPC server and accessing the selected femtocell access point.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: November 25, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seung-Kwon Baek, Jae Su Song, Jin Up Kim
  • Patent number: 8868013
    Abstract: A signal transmitting apparatus includes a signal distributor, a frequency converter, and a frequency synthesizer. The signal distributor is configured to baseband signals corresponding respectively to a plurality of frequency band. The frequency converter is configured to convert each of the distributed baseband signals into one of a positive frequency signal and a negative frequency signal according to the frequency band. The frequency synthesizer is configured to synthesize the positive frequency signal and the negative frequency signal to generate a transmission signal. Herein, the positive frequency signal and the negative frequency signal are signals included in one predetermined intermediate frequency band.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: October 21, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jinkyu Choi, Hyung-Jung Kim, Seok Seo, Jin-Up Kim
  • Publication number: 20140119485
    Abstract: Disclosed is a dual band receiver which includes an analog-to-digital converter configured to convert a dual band analog RF signal into a dual baseband digital signal; and a first signal extractor configured to generate a first path signal and a second path signal from the dual baseband signal and to extract a first baseband signal using a relative sample delay difference between the first and second path signals, wherein the dual baseband signal includes the first baseband signal and a second baseband signal, the first path signal is a signal obtained by sample delay of the dual baseband signal and then down sampling of a resultant signal, and the second path signal is a signal obtained by down sampling of the dual baseband signal without sample delay.
    Type: Application
    Filed: December 31, 2013
    Publication date: May 1, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Seok SEO, Hyung-Jung KIM, Jin Up KIM
  • Patent number: 8630381
    Abstract: Disclosed is a dual band receiver which includes an analog-to-digital converter configured to convert a dual band analog RF signal into a dual baseband digital signal; and a first signal extractor configured to generate a first path signal and a second path signal from the dual baseband signal and to extract a first baseband signal using a relative sample delay difference between the first and second path signals, wherein the dual baseband signal includes the first baseband signal and a second baseband signal, the first path signal is a signal obtained by sample delay of the dual baseband signal and then down sampling of a resultant signal, and the second path signal is a signal obtained by down sampling of the dual baseband signal without sample delay.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: January 14, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seok Seo, Hyung Jung Kim, Jin Up Kim
  • Publication number: 20130177107
    Abstract: Provided are a bandpass sampling receiver and a filter design and reconfiguration method thereof. The bandpass sampling receiver includes: an analog-digital converter converting an analog wireless signal into a digital baseband signal; and a complex baseband signal extraction unit generating a first path signal and a second path signal from the digital baseband signal and extracting a complex baseband signal using a relative sample delay difference between the first and second path signals, wherein the first path signal is a down sampled signal after the digital baseband signal is sample-delayed and the second path signal is a down sampled signal without sample-delaying the digital baseband signal.
    Type: Application
    Filed: September 20, 2011
    Publication date: July 11, 2013
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Seok Seo, Jin Up Kim
  • Patent number: 8458241
    Abstract: The present invention relates to a memory address generating method and a twiddle factor generator using the memory address generating method in a fast Fourier transform (FFT) system. In the memory address generating method for generating a memory address of a twiddle factor in a fast Fourier transform (FFT) system according to an embodiment of the present invention: a) a temporary address value of a second twiddle factor is induced and generated based on a first twiddle factor; b) a control signal for controlling the system is generated based on the generated temporary address value; and c) a memory address value of the second twiddle factor is generated from the temporary address value.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: June 4, 2013
    Assignee: Electronic and Telecommunications Research Institute
    Inventors: Hui-Rae Cho, Gweon-Do Jo, Jin-Up Kim
  • Patent number: 8417757
    Abstract: A modulo N calculating method for an M1*M2-bit binary integer, wherein N, M1 and M2 are integers, includes the steps of dividing the M1*M2-bit binary integer into M1 bits and performing AND operation on each M1 bits and a specific binary integer; and changing a value of an output register depending on the AND operation result and storing the value thereto. A modulo N calculating apparatus includes an input unit for receiving an M1*M2-bit binary integer, wherein N, M1 and M2 are integers; and an AND operation unit for performing AND operation on the M1*M2-bit binary integer and a specific binary integer. Furthermore, when the M1 and the N may be 4 and 3, respectively, the specific binary value may be 1010 or 0101.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: April 9, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seong Chul Cho, Hyung Jin Kim, Gweon Do Jo, Jin Up Kim, Dae Sik Kim
  • Patent number: 8397121
    Abstract: A decoding method and apparatus of a retransmission communication system are provided. In the decoding method and apparatus, weights are applied to error data and retransmitted data, and the resulting error data and the resulting retransmitted data are chase-combined. Therefore, it is possible to reduce the coding rate of combined data and enhance the reliability of decoding.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: March 12, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seong Chul Cho, Hyung Jin Kim, Gweon Do Jo, Jin Up Kim
  • Patent number: 8359030
    Abstract: A method for searching for a base station using paging procedure in a mobile communication network has a paging agent that performs the paging procedure. The method includes: receiving, at the paging agent, subscriber information including information of a service, to which a mobile node subscribed, from a home location register while performing a location registration procedure in response to a location registration request from the mobile node; setting an available scan time based on the time required to perform the paging procedure; generating a paging request message including the available scan time and the subscriber information to send the paging request message to a base station required for paging; and generating base station information based on the subscriber information to input into the paging request message to transmit with the available scan time to the mobile node.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: January 22, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae Su Song, Seung-Kwon Baek, Jin-Up Kim
  • Patent number: 8351947
    Abstract: A system for radio access in a wireless communication system, in which a number of RATs exist, includes: a RAS configured to share radio environment information and the RATs with an adjacent RAS using a macroband SPC, the RAS being reconfigurable in conformity with the RATs; and a RMS configured to transmit/receive the radio environment information and the RATs to/from the RAS using a microband SPC and access the RAS using the microband SPC, the RMS being reconfigurable in conformity with RAT of the accessed RAS.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: January 8, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Woo-Goo Park, Sunhee Yang, Jin-Up Kim
  • Patent number: 8325835
    Abstract: A Non-Continuous Orthogonal Frequency Division Multiplexing (NC-OFDM) system may be provided. The NC-OFDM system, including: a sensing unit to determine whether to use at least one frequency band; a band control unit to disable a subcarrier with respect to a frequency band in use as a result of the determination; a pruning determination unit to determine whether a number of points where the subcarrier is disabled is greater than a threshold value; a pruning retrieval unit to retrieve a pruning path generated by the disabling of the subcarrier, when the number of points is greater than the threshold value; and a Fourier transform unit to perform a Fast Fourier transform (FFT) or Inverse FFT (IFFT) by applying the pruning path to the subcarrier.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: December 4, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Deockgu Jee, Jin Up Kim, Joonhyuk Kang, Keongkook Lee, Jungho Myung
  • Patent number: 8229046
    Abstract: A frequency error estimator and an operating method of the frequency error estimator are provided. In the frequency error estimator and the operating method of the frequency error estimator, a frequency error between a transmitter and a receiver of a mobile communication system using a reference code is calculated, thereby improving the precision of estimation while reflecting variations in frequency over time.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: July 24, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seok Seo, Hyung Jung Kim, Deock Gu Jee, Gweon Do Jo, Jin Up Kim
  • Patent number: 8224341
    Abstract: Provided is a method for providing a service, and a method and an apparatus for allocating a resource in a wireless communication system. Services to be provided to users are divided into one of primary and secondary services based on priority in terms of frequency utilization. A service is provided using frequency channel remaining after being used in the primary service in a time zone when frequency utilization rate of the primary service is a threshold value or less. Accordingly, when service data corresponding to the secondary service are received, a user terminal stores the service data in a storage unit. Then, when the user requests provision of the corresponding service, the user terminal provides the stored service data to the user.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: July 17, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seung-Hwan Lee, Jin Up Kim, Kyu Tae Lee
  • Patent number: 8219108
    Abstract: Provided is a method of operating a smart radio communication system, the method including: collecting information associated with each of a plurality of radio access technologies (RATs) through an access to the plurality of RATs; receiving a type of a service, requested by a terminal, via a first RAT accessing the terminal among the plurality of RATs; selecting an optimal channel based on the collected information and the received type of the service; and transmitting a content corresponding to the service via the selected optimal channel.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: July 10, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seung-Hwan Lee, Jin Up Kim, Kyu Tae Lee
  • Patent number: 8218489
    Abstract: The present invention relates to a scheduling apparatus of a base station supporting Automatic Repeat reQuest (ARQ) method. In particular, the present invention discloses scheduling a data unit transmitted to a mobile station from a base station providing ARQ method for correcting an error in wireless data communication and generating a high rate frame. According to the present invention, there is provided a transmission controlling apparatus comprising a receiver to receive mobile station status information from a mobile station connected with a base station, a schedule managing unit to determine transmission priority of a plurality of data units to be transmitted to the mobile station based on the received mobile station status information, and a transmitter to transmit the data units to the mobile station based on the determined transmission priority.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: July 10, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Yun Hee Cho, Hyung Jin Kim, Ji Yeon Kim, Gweon Do Jo, Jin Up Kim
  • Publication number: 20120157096
    Abstract: A method of searching a femtocell access point includes: transmitting configuration/measurement information an operating frequency and a transmission power strength from multiple femtocell access points located within the macro cell to an OSM)/CPC server; and receiving, at the OSM/CPC server, the configuration/measurement information from the femtocell access points, and generating a femtocell access point list usable in a mobile terminal to provide the generated femtocell access point list to the mobile terminal. The method further includes selecting, at the mobile terminal, one femtocell access point from the femtocell access point list provided from the OSM/CPC server and accessing the selected femtocell access point.
    Type: Application
    Filed: December 20, 2011
    Publication date: June 21, 2012
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seung-Kwon BAEK, Jae Su Song, Jin Up Kim