Patents by Inventor Ki-Back Kim

Ki-Back 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: 11323962
    Abstract: A power control method of a base station in a wireless communication system based on Orthogonal Frequency Division Multiple Access (OFDMA) is provided for reducing power consumption by turning off the bias of the power amplifier for the duration of a symbol carrying no user data. The method includes checking scheduling information of radio resources, detecting a symbol carrying no user data, based on the scheduling information, and turning off a bias of the power amplifier for a symbol duration of the symbol carrying no user data. The transmission power control method is capable of reducing power consumption of the base station by turning off the bias of the power amplifier of the base station for the symbol duration in which no user data is transmitted.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: May 3, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong Geun Lee, Young Bae Park, Young Kyu Choi, Ki Back Kim
  • Publication number: 20200383051
    Abstract: A power control method of a base station in a wireless communication system based on Orthogonal Frequency Division Multiple Access (OFDMA) is provided for reducing power consumption by turning off the bias of the power amplifier for the duration of a symbol carrying no user data. The method includes checking scheduling information of radio resources, detecting a symbol carrying no user data, based on the scheduling information, and turning off a bias of the power amplifier for a symbol duration of the symbol carrying no user data. The transmission power control method is capable of reducing power consumption of the base station by turning off the bias of the power amplifier of the base station for the symbol duration in which no user data is transmitted.
    Type: Application
    Filed: August 14, 2020
    Publication date: December 3, 2020
    Inventors: Dong Geun LEE, Young Bae PARK, Young Kyu CHOI, Ki Back KIM
  • Publication number: 20200374797
    Abstract: A power control method of a base station in a wireless communication system based on Orthogonal Frequency Division Multiple Access (OFDMA) is provided for reducing power consumption by turning off the bias of the power amplifier for the duration of a symbol carrying no user data. The method includes checking scheduling information of radio resources, detecting a symbol carrying no user data, based on the scheduling information, and turning off a bias of the power amplifier for a symbol duration of the symbol carrying no user data. The transmission power control method is capable of reducing power consumption of the base station by turning off the bias of the power amplifier of the base station for the symbol duration in which no user data is transmitted.
    Type: Application
    Filed: August 14, 2020
    Publication date: November 26, 2020
    Inventors: Dong Geun Lee, Young Bae Park, Young Kyu Choi, Ki Back Kim
  • Patent number: 10237876
    Abstract: Embodiments of the present disclosure provide terminal connection control method and apparatus in a base station of a mobile communication system which supports a Carrier Aggregation (CA) function.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: March 19, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam-Ryul Jeon, Ki-Back Kim, Han-Seok Kim, Hyun-Ho Im, Ji-Hyeon Choi
  • Publication number: 20160323889
    Abstract: Embodiments of the present disclosure provide terminal connection control method and apparatus in a base station of a mobile communication system which supports a Carrier Aggregation (CA) function.
    Type: Application
    Filed: December 19, 2014
    Publication date: November 3, 2016
    Inventors: Nam-Ryul JEON, Ki-Back KIM, Han-Seok KIM, Hyun-Ho IM, Ji-Hyeon CHOI
  • Patent number: 9408110
    Abstract: A network includes a Mobile Station (MS) for sending a Service Flow (SF) modification request message to a Base Station (BS) to modify an SF. The BS sends a path modification request message to a serving SF Authorization (SFA) when there is the information on the SF. The BS also sends an SF modification response message comprising a Confirmation Code ‘Reject SF not found’ to the MS when there is no information on the SF. The serving SFA sends a resource reservation request message to an anchor SFA when there is the information on the SF, and sends a path modification response message comprising a Failure Indication (FI) ‘Requested Context Unavailable’ to the BS when there is no information on the SF. The anchor SFA sends a resource reservation response message comprising the FI ‘Requested Context Unavailable’ to the serving SFA when there is no information on the SF.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: August 2, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yoon-Jeong Ha, Ki-Back Kim, Kwon-Young Kim, Hyung-Seok Ha, Jae-Jeong Shim, Jung-Shin Park, Han-Kyung Lee, Chang-Yeon Kim
  • Patent number: 9165261
    Abstract: An apparatus and method for processing accounting in a wireless communication system are provided. The method includes creating an accounting data base (DB) for a mobile station (MS), determining whether a state transition of the MS occurs, if the state transition of the MS occurs, updating state information in the accounting DB, and transmitting the accounting information including the state information to an accounting server.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: October 20, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Han-Seok Kim, Ki-Back Kim
  • Patent number: 9100915
    Abstract: An apparatus and method for a base station to control a state of a mobile station based on a traffic condition of the mobile station are provided. The terminal operation control method includes controlling a terminal having ongoing traffic while the terminal is in an awake state, determining whether a pseudo awake timer of the terminal expires, wherein the pseudo awake timer counts a time for which the terminal in the awake state has no traffic, withdrawing, when the pseudo awake timer expires, a resource allocated to the terminal, and transitioning the state of the terminal to a pseudo awake state.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: August 4, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong Min Kim, Ki Back Kim, Yoon Jeong Ha, Bong Ju Kim
  • Patent number: 8897305
    Abstract: Apparatuses and methods for providing an emergency service in a wireless communication system are provided. The method includes allocating a Connection IDentifier (CID) used to transmit the emergency service message, determining a Convergence Sublayer (CS) type for processing the emergency service message, generating a Downlink Channel Descriptor (DCD) message which comprises at least one of the allocated CID and information relating to the determined CS type, and transmitting the generated DCD message to a Mobile Station (MS).
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: November 25, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yeong-Moon Son, Hyun-Jeong Kang, Ki-Back Kim, Young-Bae Park, Sunny Chang, Sang-Kyou Ryou
  • Patent number: 8874107
    Abstract: A Base Station (BS) and method of the BS for controlling a scanning process of a mobile station are provided The method of the base station for controlling a scanning process of a mobile station includes receiving, at the base station, a scan request issued in association with the mobile station, determining whether the mobile station has a scan in progress by referencing a scan record table, transmitting a scan response to the mobile station, and recording a scanning status of the mobile station in the scan record table. The method and base station for controlling the scanning process of a mobile station is advantageous to avoid the collision of scanning processes.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: October 28, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young Kyu Choi, Ki Back Kim, Han Seok Kim
  • Patent number: 8830874
    Abstract: A method and an apparatus for load balancing a serving subcell providing a data service to one or more user equipments in a cellular communication system are provided. The method includes calculating a load metric by using a radio resource occupation rate of data traffic in one or more scheduling types except for a Best Effort (BE) scheduling type, determining whether the serving subcell is in an overload state by using the load metric, and triggering a load balancing algorithm when it is determined that the serving subcell is in the overload state. Accordingly, the load metric used for load balancing may be defined to have a value closer to an actual free load, and thus the load balancing may be efficiently performed.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: September 9, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Kyu Cho, Ki-Back Kim, Jin-Hyun Youn
  • Patent number: 8649309
    Abstract: An apparatus and method for creating a data path for a broadcasting service in a cellular network is provided. In a method for creating a data path to provide a broadcasting service in a cellular network, a broadcast server transmits a session start request message to an Access Service Network-GateWay (ASN_GW) before transmission of Multicast and Broadcast Service (MBS) data, to request a multicast connection setup. The ASN_GW establishes a multicast connection between the broadcast server and the ASN_GW on the basis of information of the session start request message. The ASN_GW transmits a session start response message to the broadcast server in response to the session start request message, after establishment of the multicast connection between the broadcast server and the ASN_GW. The ASN_GW transmits a path registration request message to at least one base station associated with a broadcast zone, to request MBS data path establishment and air resource reservation.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: February 11, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-Back Kim, Han-Kyung Lee, Sung-Man Kim, Nae-Hyun Lim
  • Patent number: 8514699
    Abstract: An apparatus and method for Admission Control (AC) in a broadband wireless communication system are provided. The apparatus includes a classification unit for determining a Mobile Virtual Network Operator (MVNO), from a plurality of MVNOs, that provides services for a generated resource request, a manager for evaluating a resource occupation status of the MVNO and a resource amount permitted to the MVNO, and a determination unit for determining whether to admit the resource request according to at least one of the resource occupation status of the determined MVNO, the resource amount permitted to the determined MVNO and an available total resource amount.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: August 20, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-Back Kim, Eun-Chan Park, Chang-Yeon Kim
  • Patent number: 8503454
    Abstract: An apparatus and method for setting up Quality of Service (QoS) in a wireless communication system are provided. The method includes, during an initial network entry, generating at least one static Service Flow (SF) by receiving a QoS profile from a Base Station (BS), if QoS change is requested for the SF, transmitting by a Mobile Station (MS) to the BS a service change request message which requests a service change and includes QoS change information, and by the BS, determining if the service change request is granted, and, if granted, transmitting a service change response message to the MS, and changing a QoS of the SF.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: August 6, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-Back Kim, Ji-Cheol Lee, Jung-Shin Park
  • Patent number: 8483113
    Abstract: An apparatus and method for providing a Multicast and Broadcast Service (MBS) in a Broadband Wireless Access (BWA) system are provided. The apparatus includes a fragmentation unit, a Generic Routing Encapsulation (GRE) packet generator, and a communication unit. The fragmentation unit fragmentizes MBS traffic received from a network for synchronization. The GRE packet generator generates a GRE packet with each of segments from the fragmentation unit. The communication unit transmits the GRE packet from the GRE packet generator to a Base Station (BS) in consideration of a packet period.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: July 9, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-Back Kim, Nae-Hyun Lim, Sang-Young Lee
  • Patent number: 8411563
    Abstract: Disclosed is an apparatus and method for an MBS service in a BWA system. An apparatus of a base station includes a time controller, a CAC processor, and a buffer controller. The time controller manages a broadcast start time and a broadcast end time and generates a broadcast start message at a predetermined time before the actual broadcast start time. Upon receipt of the generated broadcast start message from the time controller, the CAC processor calculates a capacity decrease due to broadcast service and subtracts the capacity decrease from the current available capacity to update the available capacity. Upon receipt of the generated broadcast start message from the time controller, the buffer controller controls the buffer occupation of unicast traffic in order to provide the buffer space required for a broadcast service.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: April 2, 2013
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Eun-Chan Park, Ki-Back Kim, Ju-Yong Lee
  • Publication number: 20130028093
    Abstract: A method and an apparatus for load balancing a serving subcell providing a data service to one or more user equipments in a cellular communication system are provided. The method includes calculating a load metric by using a radio resource occupation rate of data traffic in one or more scheduling types except for a Best Effort (BE) scheduling type, determining whether the serving subcell is in an overload state by using the load metric, and triggering a load balancing algorithm when it is determined that the serving subcell is in the overload state. Accordingly, the load metric used for load balancing may be defined to have a value closer to an actual free load, and thus the load balancing may be efficiently performed.
    Type: Application
    Filed: July 25, 2012
    Publication date: January 31, 2013
    Applicant: Samsung Electronics Co. Ltd.
    Inventors: Young-Kyu CHO, Ki-Back KIM, Jin-Hyun YOUN
  • Publication number: 20120322482
    Abstract: An apparatus and method for a base station to control a state of a mobile station based on a traffic condition of the mobile station are provided. The terminal operation control method includes controlling a terminal having ongoing traffic while the terminal is in an awake state, determining whether a pseudo awake timer of the terminal expires, wherein the pseudo awake timer counts a time for which the terminal in the awake state has no traffic, withdrawing, when the pseudo awake timer expires, a resource allocated to the terminal, and transitioning the state of the terminal to a pseudo awake state.
    Type: Application
    Filed: June 14, 2012
    Publication date: December 20, 2012
    Applicant: SAMSUNG ELECTRONICS CO. LTD.
    Inventors: Seong Min KIM, Ki Back KIM, Yoon Jeong HA, Bong Ju KIM
  • Publication number: 20120281627
    Abstract: A method and apparatus for providing a Voice over Internet Protocol (VoIP) service using a Payload Header Suppression (PHS) method in a mobile communication system are provided. The method includes extracting header information by analyzing a Session Description Protocol (SDP) offer message that is included in a Session Initiation Protocol (SIP) signaling message received from a Worldwide Interoperability for Microwave Access (WiMAX) system, generating a Classification (CS) rule based on the extracted header information, determining whether to generate a new service flow based on the extracted header information, generating a PHS rule using a Dynamic Service Addition (DSA) when the new service flow is generated, and generating the PHS rule using a Dynamic Service Change (DSC) when the new service flow is not generated, and transmitting the generated CS rule and PHS rule to the WiMAX system.
    Type: Application
    Filed: December 21, 2010
    Publication date: November 8, 2012
    Applicant: SAMSUNG ELECTRONICS CO. LTD.
    Inventors: Yoon-Jeong Ha, Han-Seok Kim, Ki-Back Kim, Yeong-Moon Son, Han-Kyung Lee
  • Patent number: 8270353
    Abstract: An apparatus and method are provided for load balancing in a broadband communication system. In an initial network entry/network reentry/handover, whether to allow a user terminal and whether to allow each service flow are checked. The channel state and load state of candidate frequency assignments and subcells are detected. The ranging status of a corresponding frequency assignment or a corresponding subcell is set according to whether to allow the user terminal. The allowable candidate frequency assignment and subcells are selected and transmitted.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: September 18, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-Back Kim, Jae-Jeong Shim, Geun-Hwi Lim, Chang-Yeon Kim, Yoon-Jeong Ha