Patents by Inventor Il-Whan Kim

Il-Whan 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).

  • Publication number: 20200290316
    Abstract: A heat sink plate includes a first layer made of copper (Cu) or a copper (Cu) alloy, a second layer formed on the first layer and made of molybdenum (Mo) or an alloy that includes copper (Cu) and one or more components selected from molybdenum (Mo), tungsten (W), carbon (C), chromium (Cr), titanium (Ti), and beryllium (Be), a third layer formed on the second layer and made of copper (Cu) or a copper (Cu) alloy, a fourth layer formed on the third layer and made of molybdenum (Mo) or an alloy that includes copper (Cu) and one or more components selected from molybdenum (Mo), tungsten (W), carbon (C), chromium (Cr), titanium (Ti), and beryllium (Be), and a fifth layer formed on the fourth layer and made of copper (Cu) or a copper (Cu) alloy.
    Type: Application
    Filed: February 25, 2020
    Publication date: September 17, 2020
    Inventors: Meoung-whan CHO, Il-ho KIM, Seog-woo LEE, Young-suk KIM, Hiroto NARIEDA, Tomotsugu AOYAMA
  • Patent number: 10777484
    Abstract: A heat sink plate having a structure in which two or more kinds of materials are laminated, includes: a core layer in the thickness direction of the heat sink plate; and cover layers covering a top surface and a bottom surface of the core layer; wherein the cover layers comprise a material containing copper, wherein the core layer is formed of a matrix having a first thermal expansion coefficient and a plurality of layers extending in parallel along the thickness direction of the core layer in a lattice form in the matrix, wherein the plurality of layers are made of an alloy having a second thermal expansion coefficient.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: September 15, 2020
    Assignee: THE GOODSYSTEM CORP.
    Inventors: Il-ho Kim, Meoung-whan Cho, Young-suk Kim
  • Patent number: 9055591
    Abstract: A scheduling method and an apparatus adapted thereto are disclosed that can allocate sub-carriers to a terminal at the cell edge in a wireless communication. The scheduling method includes, calculating average interference and instantaneous interference of at least two terminals for a sub-carrier, determining whether an interference for the sub-carrier is partial interference, and allocating a corresponding sub-carrier serving as transmission resource to a terminal having a higher ratio of the instantaneous interference compared to the average interference than the other terminal if an interference for the sub-carrier is partial interference.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: June 9, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Il Whan Kim, Sang-Boh Yun, Sung Soo Hwang
  • Patent number: 8451772
    Abstract: A base station includes a center frequency setting unit, a local oscillator, a baseband processor, and an RF processor. In the event of a frequency band change, the center frequency setting unit sets a center frequency of a use frequency channel to have a predetermined offset value with respect to a center frequency before the frequency band change. The local oscillator generates an LO frequency signal according to the center frequency set by the center frequency setting unit. The baseband processor generates a downlink baseband signal. The RF processor uses the LO frequency signal to convert the downlink baseband signal into an RF signal prior to transmission.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: May 28, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Ky Kim, Jae-Ho Jeon, Il-Whan Kim, Seung-Joo Maeng
  • Patent number: 8331283
    Abstract: A resource allocation method in a wireless communication system for providing a communication service in a given system frequency band to access terminals (ATs) within a broad-band service area around an access point (AP) and to ATs within a narrow-band service area having a radius larger than the radius of the broad-band service area. In the resource allocation method, the system frequency band is divided into a Time Division Duplexing (TDD) interval and a Frequency Division Duplexing (FDD) interval in time, and the TDD interval and the FDD interval are defined as TDD resources and FDD resources, respectively. The TDD resources are allocated to an AT within the broad-band service area, and the FDD resources are allocated to an AT within the narrow-band service area.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: December 11, 2012
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Seung-Young Park, Sang-Boh Yun, Yeon-Woo Lee, Chung-Gu Kang, Il-Whan Kim
  • Patent number: 8254345
    Abstract: A beacon scheduling method in multi-hop ad-hoc communications is provided. This method can prevent overhead in a manner that a base station (BS) transmits beacon slot information to a carrier sense multiple access (CSMA)/collision avoidance (CA) node (CN) and a gateway (GW) through contention-free time division multiple access (TDMA) communications at initial clustering, the CN and the GW performs a sequential clustering to forward the beacon slot information to a cluster head (CH), the CH aggregates joining messages from nodes and assigns non-colliding beacon slots to the nodes, and the GW uses a beacon slot frame of a beacon transmission period (BTP) used by its selected CH in a beacon reply period (BRP) as well. Accordingly, the CH does not need to separately perform the initialization to elect the beacon slot, and the GW also does not require a separate initialization to select the beacon relay slot.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: August 28, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jun-haeng Cho, Chung-gu Kang, Il-whan Kim, Kun-hyun Kim
  • Patent number: 7986662
    Abstract: An apparatus and method for reducing MAP channel overhead in a broadband wireless communication system. In a Base Station (BS), a traffic classifier classifies transmission data into a first group and a second group according to user channel information and packet sizes of the transmission data. A MAP channel configure configures a MAP channel to include information about users of the first group and positions of data for the users, information indicating whether users of the second group have succeeded in random access in a second uplink data region of a previous frame, and information about resource reservation for a current frame for the second group. A channel mapper maps the first group to a first downlink data region and maps the second group to a second downlink data region according to the MAP channel.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: July 26, 2011
    Assignees: Samsung Electronics Co., Ltd, Industry-University Cooperation Foundation Sogang University
    Inventors: Jae-Hyuk Jang, Young-Bin Chang, Jung-Min Ro, Eun-Taek Lim, Dong-Seek Park, Young-Kwon Cho, Chung-Gu Kang, Il-Whan Kim
  • Publication number: 20100273498
    Abstract: An apparatus and method for mitigating inter-cell interference in a macro Base Station (BS) of a wireless communication system having at least one femto cell are provided. The method includes restricting the use of at least one code among at least one available code when forming a beam by resource block, constructing a codebook set for each resource block, when feedback information is received from at least one Mobile Station (MS), allocating a resource to the MS in consideration of the feedback information, determining a weight for forming a beam to the MS in consideration of the codebook set for each resource block and the resource allocated to the MS, and forming the beam to the MS using the weight.
    Type: Application
    Filed: April 23, 2010
    Publication date: October 28, 2010
    Applicants: SAMSUNG ELECTRONICS CO. LTD., Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Il-Whan KIM, Sang-Boh YUN, Sung-Soo HWANG, Dae-Sik HONG, Sung-Soo PARK
  • Publication number: 20100208717
    Abstract: A base station includes a center frequency setting unit, a local oscillator, a baseband processor, and an RF processor. In the event of a frequency band change, the center frequency setting unit sets a center frequency of a use frequency channel to have a predetermined offset value with respect to a center frequency before the frequency band change. The local oscillator generates an LO frequency signal according to the center frequency set by the center frequency setting unit. The baseband processor generates a downlink baseband signal. The RF processor uses the LO frequency signal to convert the downlink baseband signal into an RF signal prior to transmission.
    Type: Application
    Filed: February 12, 2010
    Publication date: August 19, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Young-Ky Kim, Jae-Ho Jeon, Il-Whan Kim, Seung-Joo Maeng
  • Publication number: 20100165971
    Abstract: A scheduling method and an apparatus adapted thereto are disclosed that can allocate sub-carriers to a terminal at the cell edge in a wireless communication. The scheduling method includes, calculating average interference and instantaneous interference of at least two terminals for a sub-carrier, determining whether an interference for the sub-carrier is partial interference, and allocating a corresponding sub-carrier serving as transmission resource to a terminal having a higher ratio of the instantaneous interference compared to the average interference than the other terminal if an interference for the sub-carrier is partial interference.
    Type: Application
    Filed: December 18, 2009
    Publication date: July 1, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Il Whan KIM, Sang-Boh Yun, Sung Soo Hwang
  • Patent number: 7590611
    Abstract: A clustering method of a wireless sensor network is provided to minimize energy consumption. The clustering method includes the operations of determining a number of initial nodes within radio range of ordinary node, the ordinary nodes existing within radio range of a cluster head, and setting an ordinary node having a highest number of initial nodes among the ordinary nodes in the radio range of the cluster head, as a gateway. Because the number of usually large energy consuming cluster heads and gateways can be minimized, energy efficiency of wireless sensor network increases.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: September 15, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyeong Hur, Chung-gu Kang, Il-whan Kim, Ki-seok Chang
  • Patent number: 7532598
    Abstract: A method for flooding a route request packet that is received at a node in a communication system constructed of at least three nodes including a source node that requests to establish a route and a destination node that receives the route request. One of a plurality of levels having different transmission periods is determined using a strength of a received signal of a measured packet. A transmission start point is selected at the determined level, and it is determined whether a route request packet is re-received before the selected transmission start point. The received packet is broadcast at the selected transmission start point when the packet is not re-received. The transmission start point is randomly selected within the transmission period or at the level in consideration of the number of the connected nodes.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: May 12, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Soon-jin Choi, Il-whan Kim, Chung-gu Kang, Min-seop Jeong, Yu-jin Lim
  • Patent number: 7522637
    Abstract: A dynamic resource allocation method in an OFDMA system is provided. A base station determines if each of a plurality of SSs supports subchannel-based dynamic resource allocation. If an SS supports the subchannel-based dynamic resource allocation, the base station allocates resources to the SS on a subchannel basis. If the SS does not support the subchannel-based dynamic resource allocation, the base station allocates resources to the SS on a burst basis.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: April 21, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Il-Whan Kim, Sang-Boh Yun, Sung-Hyun Cho, Won-Hyoung Park, Chung-Gu Kang, Jeong-Hwan Lee
  • Publication number: 20080188230
    Abstract: A method and apparatus for allocating a radio resource in a wireless sensor network are provided, in which a signal requesting a radio resource allocation is received from any one of sensors included in the wireless sensor network, an amount of remaining energy is compared with respect to each zone where a sensor transmitting the signal is included, an order of zones, from a zone comprising a greatest amount of remaining energy to a zone having a least amount of remaining energy, is determined as a result of the comparison, and a time slot is allocated to a sensor of each zone according to the determined order of zones, when transmitting a frame for the radio resource allocation.
    Type: Application
    Filed: July 6, 2007
    Publication date: August 7, 2008
    Inventors: Paul Barom Jeon, Jun Hyeong Kim, Sang Do Park, Sun Shin An, Won Keun Kong, Chung Gu Kang, Sung Min Kang, Il Whan Kim
  • Patent number: 7391789
    Abstract: An ad-hoc network wireless communication system transmits data packets from one hop to another hop in a relay manner, and includes a transmitting node for transmitting a RTS message in order to transmit the data packets, and a receiving node, existing in a next hop of the transmitting node, for transmitting a CTS message in response to the RTS message transmitted from the transmitting node. The receiving node transmits the CTS message to another receiving node successively connected to the receiving node in response to the transmitted CTS message, and the transmitting node transmits the data packets to the receiving node in the case that the CTS message transmitted by the receiving node of the next hop is received over a predetermined number of times. The ad-hoc network wireless communication system can maximize the communication efficiency in a multi-hop network with its complexity minimized by extending a MAC protocol based on a IEEE 802.11 DCF to a reservation-based MAC in the multi-hop network.
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: June 24, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chung-gu Kang, Won-soo Kim, Il-whan Kim
  • Patent number: 7339921
    Abstract: Provided is a connection identification (CID) allocating method in a Broadband Wireless Access (BWA) communication system having a medium access control protocol data unit (MAC PDU) format with a header field including control information and a payload field including user data. The header field has a first CID field of a first length indicating a CID of a mobile subscriber station (MSS), a second CID field of a second length and indicating the CID of the MSS by being concatenated with a CID of the first CID field, and a type field indicating whether the second CID field is used. The method includes determining a CID to be allocated to a particular MSS; and if the length of the determined CID is equal to the first length, including the determined CID in the first CID field, including, in the type field, information indicating that the second CID field is not used, and transmitting the MAC PDU to the MSS.
    Type: Grant
    Filed: May 10, 2005
    Date of Patent: March 4, 2008
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Il-Whan Kim, Sung-Hyun Cho, Sang-Boh Yun, Won-Hyoung Park, Chung-Gu Kang, Jeong-Hwan Lee
  • Publication number: 20070230376
    Abstract: A resource allocation method in a wireless communication system for providing a communication service in a given system frequency band to access terminals (ATs) within a broad-band service area around an access point (AP) and to ATs within a narrow-band service area having a radius larger than the radius of the broad-band service area. In the resource allocation method, the system frequency band is divided into a Time Division Duplexing (TDD) interval and a Frequency Division Duplexing (FDD) interval in time, and the TDD interval and the FDD interval are defined as TDD resources and FDD resources, respectively. The TDD resources are allocated to an AT within the broad-band service area, and the FDD resources are allocated to an AT within the narrow-band service area.
    Type: Application
    Filed: December 28, 2006
    Publication date: October 4, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung-Young Park, Sang-Boh Yun, Yeon-Woo Lee, Chung-Gu Kang, Il-Whan Kim
  • Publication number: 20070140167
    Abstract: An apparatus and method for reducing MAP channel overhead in a broadband wireless communication system. In a Base Station (BS), a traffic classifier classifies transmission data into a first group and a second group according to user channel information and packet sizes of the transmission data. A MAP channel configure configures a MAP channel to include information about users of the first group and positions of data for the users, information indicating whether users of the second group have succeeded in random access in a second uplink data region of a previous frame, and information about resource reservation for a current frame for the second group. A channel mapper maps the first group to a first downlink data region and maps the second group to a second downlink data region according to the MAP channel.
    Type: Application
    Filed: December 18, 2006
    Publication date: June 21, 2007
    Applicants: SAMSUNG ELECTRONICS CO., LTD., Industry-University Cooperation Foundation Sogang University
    Inventors: Jae-Hyuk Jang, Young-Bin Chang, Jung-Min Ro, Eun-Taek Lim, Dong-Seek Park, Young-Kwon Cho, Chung-Gu Kang, Il-Whan Kim
  • Publication number: 20070047510
    Abstract: A beacon scheduling method in multi-hop ad-hoc communications is provided. This method can prevent overhead in a manner that a base station (BS) transmits beacon slot information to a carrier sense multiple access (CSMA)/collision avoidance (CA) node (CN) and a gateway (GW) through contention-free time division multiple access (TDMA) communications at initial clustering, the CN and the GW performs a sequential clustering to forward the beacon slot information to a cluster head (CH), the CH aggregates joining messages from nodes and assigns non-colliding beacon slots to the nodes, and the GW uses a beacon slot frame of a beacon transmission period (BTP) used by its selected CH in a beacon reply period (BRP) as well. Accordingly, the CH does not need to separately perform the initialization to elect the beacon slot, and the GW also does not require a separate initialization to select the beacon relay slot.
    Type: Application
    Filed: August 31, 2006
    Publication date: March 1, 2007
    Inventors: Jun-haeng Cho, Chung-gu Kang, Il-whan Kim, Kun-hyun Kim
  • Patent number: D853977
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: July 16, 2019
    Assignee: THE GOODSYSTEM CO., LTD.
    Inventors: Il-ho Kim, Meoung-whan Cho, Young-suk Kim