Patents by Inventor Dae-Gyun Kim

Dae-Gyun 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: 10292172
    Abstract: A method and an apparatus for transmitting a packet in a system performing a Device to Device (D2D) direct communication are provided. In the method, whether to transmit a small packet is determined. When small packet transmission is determined, at least one peripheral reception device is informed of whether the small packet is transmitted at a scheduling point.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: May 14, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chi-Woo Lim, Kyung-Kyu Kim, Dae-Gyun Kim, Seung-Hoon Park
  • Patent number: 10149302
    Abstract: Disclosed is a method for controlling interference for D2D communication. The method includes: identifying whether a position of a first user device belongs to a first area that satisfies a predetermined criterion; and if the position of the first user device is identified to belong to the first area, determining some resources constituting dedicated resources of the first area, among available resources of a signal for discovering a counterpart user device of D2D communication by the first user device, as resources of the signal.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: December 4, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Hyo Kim, Hyun-Seok Ryu, Dae-Gyun Kim, Seung-Hoon Park, Jin Whan Kang, Myung Hoon Koh, Min Jang
  • Patent number: 10111262
    Abstract: The present disclosure provides a method for performing a cellular communication in a device-to-device communication system, the method comprising the operations of: receiving scheduling to transmit an uplink signal through a specific resource of a discovery channel from a base station; generating uplink scheduling information notifying scheduling of the uplink signal; and transmitting the uplink scheduling information through at least one discovery resource of the discovery channel.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: October 23, 2018
    Assignees: SAMSUNG ELECTRONICS CO., LTD., RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Hyung-Jin Choi, Hyun-Seok Ryu, Dae-Gyun Kim, Seung-Hoon Park, Dong-Joon Lee, Won-Joon Hwang
  • Patent number: 10057729
    Abstract: An apparatus and method is provided for generating one packet with transmission data and transmitting the packet from an access network transceiver system (ANTS) to a plurality of access terminals (ATs) in a mobile communication system including the ATs and the ANTS which are capable of performing packet data communication with ATs located in coverage thereof. The method includes the steps of generating a medium access control (MAC) header including information on a receiving AT's address, a length and format for transmission data, generating a MAC payload, by consecutively connecting data units to be transmitted to the receiving AT, and generating a MAC trailer. The ANTS pads ‘0’ bits to the MAC header if a predetermined MAC size is greater than a sum of lengths of the MAC header, the MAC payload and the MAC trailer.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: August 21, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Soo Jung, Beom-Sik Bae, Dae-Gyun Kim, Yu-Chul Kim
  • Patent number: 9924553
    Abstract: The present disclosure relates to a device-to-device (D2D) communication for direct communication between nodes in a wireless communication system, wherein an operation method of a terminal includes the steps of: generating sequences, which belong to an orthogonal sequence set, according to a sequence pattern corresponding to a priority of a link; and transmitting the sequences, as signals for measurement of a reception electric power of a counterpart terminal, through sub-blocks within a channel, wherein one sequence is transmitted through each of the sub-blocks.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: March 20, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chi-Woo Lim, Hyung-Jin Choi, Kyung-Hoon Won, Won-Jun Hwang, Wi-Pil Kang, Kyung-Kyu Kim, Dae-Gyun Kim, Hyun-Seok Ryu, Seung-Hoon Park
  • Patent number: 9894591
    Abstract: The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as a long term evolution (LTE). A method for providing a device-to-device (D2D) communication-based service for an isolated user equipment (IUE) by a relay user equipment (RUE) in a mobile communication system is provided. The method includes establishing a D2D link with an IUE; and supporting establishment of a relay cellular link for the IUE based on the established D2D link, wherein the RUE is within a service coverage of an enhanced node B (eNB).
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: February 13, 2018
    Assignees: Samsung Electronics Co., Ltd., Research & Business Foundation Sungkyunkwan University
    Inventors: Min Young Chung, Seung-Hoon Park, Dong-Hyun Kim, Dae-Gyun Kim, Hyun-Seok Ryu, Sueng-Jae Bae, Chi-Woo Lim
  • Patent number: 9826385
    Abstract: The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as a long term evolution (LTE). The present invention relates to a method for selecting, by a device, a peer discovery resource (PDR) in a device-to-device (D2D) communication system, the method comprising the steps of: determining a PDR selection range which can be selected by the device; and selecting a PDR in the determined PDR selection range.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: November 21, 2017
    Assignees: SAMSUNG ELECTRONICS CO., LTD., RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Min-Young Chung, Seung-Hoon Park, Ja-Heon Gu, Dae-Gyun Kim, Hyun-Seok Ryu, Sueng-Jae Bae, Chi-Woo Lim
  • Patent number: 9794950
    Abstract: A method for allocating resources for Device-to-Device (D2D) communication in a transmitting terminal is provided. The method includes receiving broadcast resource allocation information for the D2D communication from a Base Station (BS), and measuring a channel quality of a downlink signal received from the BS and, if the measured channel quality is smaller than a predetermined threshold, conducting the D2D communication using the resource allocation information.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: October 17, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Seok Ryu, Seung-Hoon Park, Chi-Woo Lim, Young-Bin Chang, Anil Agiwal, Kyung-Kyu Kim, Dae-Gyun Kim, Young-Joong Mok, Sang-Kyu Baek
  • Patent number: 9730187
    Abstract: An apparatus is configured to perform a method for performing distributed scheduling by a reception device configuring a target link corresponding to one of a plurality of links in a network in which the plurality of links for device to device communication exist. The method includes adding up resource allocation demand amounts included in resource information broadcasted by a counterpart device configuring the target link and one or more adjacent transmission devices by a preset Resource Unit (RU), and adjusting self resource information in consideration of resource position information included in the broadcasted resource information and the added resource allocation demand amount and transmitting the adjusted self resource information to the counterpart transmission device.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: August 8, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung-Hoon Park, Kyung-Kyu Kim, Dae-Gyun Kim, Hyun-Seok Ryu, Young-Joong Mok, Sang-Kyu Baek, Chi-Woo Lim, Young-Bin Chang
  • Patent number: 9713183
    Abstract: A method and apparatus for performing initial entry for Device-to-Device (D2D) communication in a wireless communication system include transmitting an initial entry request including a service request for D2D communication to a Mobility Management Entity (MME) by a terminal, and if the service request for D2D communication is accepted, receiving information indicating that the initial entry request is accepted, including D2D communication information from the MME by the terminal.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: July 18, 2017
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Kyung-Kyu Kim, Dae-Gyun Kim, Hyun-Seok Ryu, Young-Joong Mok, Seung-Hoon Park, Sang-Kyu Baek, Chi-Woo Lim, Young-Bin Chang
  • Patent number: 9654969
    Abstract: A subscriber station performs a method for managing a security key. The method includes generating, for each of the base stations, an input value for generation of the security key for data transmission and reception with the each base station; transmitting, to the each base station, the input value for a corresponding base station; and generating the security key of the corresponding base station by using the input value of the each base station. A base station provides cooperative communication to the subscriber station.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: May 16, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Jeong Kang, Jung-Shin Park, Dae-Gyun Kim, Jung-Soo Jung
  • Patent number: 9647862
    Abstract: A method for operating a device in a wireless communication system supporting Device to Device (D2D) communication system includes receiving a reference signal from each of at least one transmitting device, estimating a frequency offset between the reference signals and a comparison reference signal corresponding to the reference signals, and adjusting a transmit frequency of a voltage controlled oscillator of the device using the estimated frequency offset estimation. An apparatus for compensating for a frequency offset of a device in a wireless communication system supporting Device to Device (D2D) communication system includes a frequency offset estimator configured to receive reference signals from each of at least one transmitting device, and estimating a frequency offset between the reference signals and a comparison reference signal corresponding to the reference signals, and a voltage controlled oscillator configured to adjust a transmit frequency using the estimated frequency offset.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: May 9, 2017
    Assignees: Samsung Electronics Co., Ltd., Research & Business Foundation Sungkyunkwan University
    Inventors: Seung-Hoon Park, Hyung-Jin Choi, Kyung-Hun Won, Won-Jun Hwang, Kyung-Kyu Kim, Dae-Gyun Kim, Hyun-Seok Ryu, Dong-Jun Lee, Chi-Woo Lim
  • Patent number: 9622144
    Abstract: A method for routing data by a Corresponding Mobility Agent (CMA) in a mobile communication system is provided. The method includes managing mobility for a Mobile Station (MS) with a Mobile Access Gateway (MAG), and routing a data packet between a Corresponding Node (CN) and the MS based on a location of the MS, wherein the CMA is mapped to an application server which provides an application service.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: April 11, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Shin Park, Yegin Alper, Dae-Gyun Kim, Won-Il Roh, Yeong-Moon Son
  • Patent number: 9609463
    Abstract: A mobile terminal in a mobile communication system supporting device to device (D2D) communication, and a method for operating the mobile terminal are provided. The terminal includes a first radio frequency (RF) chain configured to transmit a mobile communication signal and a second RF chain configured to receive a mobile communication signal, for mobile communication with a base station, a switching unit including a plurality of switches configured to establish transmission and reception paths in the first and second RF chains, and a controller configured to control switching of the switching unit to establish transmission and reception paths of a D2D communication signal for D2D communication by combining a part of the first RF chain with a part of the second RF chain. The combination of the parts of the first and second RF chains is different according to a D2D communication frequency band.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: March 28, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Seok Ryu, Young-Bin Chang, Chi-Woo Lim, Kyung-Kyu Kim, Dae-Gyun Kim, Seung-Hoon Park, Sang-Kyu Baek
  • Patent number: 9538484
    Abstract: The present invention is to provide a method and device for controlling transmission power by taking comprehensive consideration not only of the effect received onto itself in each device-to-device (D2D) link of a D2D communication network but also of the effect exerted onto the neighboring links.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: January 3, 2017
    Assignees: Samsung Electronics Co., Ltd., Research & Business Foundation Sungkyunkwan University
    Inventors: Hyun-Seok Ryu, Min-Young Chung, Dong-Hyun Kim, Sueng-Jae Bae, Kyung-Kyu Kim, Dae-Gyun Kim, Seung-Hoon Park, Chi-Woo Lim
  • Patent number: 9532214
    Abstract: A method for generating a key hierarchy by a MS in a wireless network is provided. The method includes transmitting an authentication request message to a new BS, receiving an authentication response message as a response message to the authentication request message from the new BS, determining whether to perform a full authentication operation with a H3A server based on the authentication response message, performing the full authentication operation or a crypto-handshake operation with the H3A server based on the determining result, after performing the full authentication operation or the crypto-handshake operation, determining whether a first expected signature value received from the new BS is identical to a first expected signature value calculated by the MS, and if the first expected signature value received from the new BS is equal to a first expected signature value calculated by the MS, determining that an authentication for the new BS has succeeded.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: December 27, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Shin Park, Yegin Alper, Dae-Gyun Kim, Yeong-Moon Son
  • Publication number: 20160353500
    Abstract: The present disclosure provides a method for performing a cellular communication in a device-to-device communication system, the method comprising the operations of: receiving scheduling to transmit an uplink signal through a specific resource of a discovery channel from a base station; generating uplink scheduling information notifying scheduling of the uplink signal; and transmitting the uplink scheduling information through at least one discovery resource of the discovery channel.
    Type: Application
    Filed: February 10, 2015
    Publication date: December 1, 2016
    Inventors: Hyung-Jin Choi, Hyun-Seok Ryu, Dae-Gyun Kim, Seung-Hoon Park, Dong-Joon Lee, Won-Joon Hwang
  • Patent number: 9510381
    Abstract: A link scheduling method in a system for performing Device-to-Device (D2D) communication includes periodically collecting information indicating whether to perform a medium access from at least one neighboring link determining at least one link expected to perform a medium access in a corresponding traffic slot among links with a higher priority than the terminal based on the collected information, and determining whether to perform the medium access of the terminal by considering only the at least one link expected to perform the medium access.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: November 29, 2016
    Assignees: Samsung Electronics Co., Ltd., Research & Business Foundation Sungkyunkwan University
    Inventors: Kyung-Kyu Kim, Min Young Chung, Dong Hyun Kim, Sueng Jae Bae, Dae-Gyun Kim, Hyun-Seok Ryu, Seung-Hoon Park, Chi-Woo Lim
  • Patent number: 9485652
    Abstract: A method and system for managing mobility of an MS in a mobile communication system using Mobile IP are provided. It is determined whether to generate an authentication key for mutual authentication between the MS and an HA after access authentication with an AG. The authentication key is generated, if it is determined to generate the authentication key after the access authentication. An information request message is transmitted to the AG. A reply message including information allocated by an AAA server is received from the AG. A binding update message for registering mobility binding of the MS is transmitted to the HA.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: November 1, 2016
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Kyung-Joo Suh, Dae-Gyun Kim
  • Patent number: RE46951
    Abstract: An apparatus and method for transmitting/receiving data in a mobile communication system using multiple antennas are provided. A receiver estimates a fading channel of received data, selects a weight set relative to a maximum data transmission rate from at least one weight set with elements of a plurality of orthogonal weight vectors, and transmits feedback information including the selected weight set and channel-by-channel state information to a transmitter. The transmitter demultiplexes data to be transmitted on a basis of the feedback information into at least one sub-data stream, multiplies each sub-data stream by an associated weight, and transmits the data.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: July 10, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Kyu Han, Dae-Gyun Kim, Hwan-Joon Kwon, Dong-Hee Kim, Youn-Sun Kim, Yu-Chul Kim, Cheol Mun