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).

  • Publication number: 20090040983
    Abstract: An apparatus and method for managing quality of service (QoS) of a service flow in a wireless communication system are provided. A method of operating a base station (BS) in a wireless communication system includes receiving QoS policy information of mobile stations (MSs) from a network entity including a policy decision function (PDF) or from neighbor BSs, and storing the QoS policy information; detecting a mobile station attempting connection re-establishment; upon detecting the mobile station attempting connection re-establishment, evaluating a QoS policy of the mobile station; and controlling a state of a service flow generated for the mobile station according to the QoS policy.
    Type: Application
    Filed: August 5, 2008
    Publication date: February 12, 2009
    Applicant: SAMSUNG ELECTRONICS Co., LTD.
    Inventors: Ki-Back Kim, Sang-Ku Kim, Jae-Jeong Shim
  • Publication number: 20090040993
    Abstract: A broadband wireless communication system is provided.
    Type: Application
    Filed: August 4, 2008
    Publication date: February 12, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ki-Back Kim, Jung-Shin Park, Han-Kyung Lee
  • Publication number: 20090022054
    Abstract: An apparatus and method for SF management in a broadband wireless communication system are provided. The apparatus includes a creator for creating a Service Flow (SF) management message including a plurality of SF identifiers to perform the same management for a plurality of SFs, and a transmitter for transmitting the management message created in the creator to an opponent node.
    Type: Application
    Filed: July 9, 2008
    Publication date: January 22, 2009
    Applicant: SAMSUNG ELECTRONICS CO. LTD.
    Inventors: Ki-Back KIM, Han-Kyung LEE
  • Publication number: 20090010165
    Abstract: In a communication system, a token manager corresponding to a generated or arriving packet is determined, tokens corresponding to a target transmission rate limit are generated, and a corresponding packet is at least one of dropped and provided in consideration of the amount of the tokens created and the size of the generated packet. Through such a method, a packet transmission rate can be limited to the target transmission rate. In addition, when there is traffic of various service classes, service can be differentially provided according to the priorities of the service classes.
    Type: Application
    Filed: July 7, 2008
    Publication date: January 8, 2009
    Applicant: Samsung Electronics Cp. Ltd.
    Inventors: Han-Seok KIM, Eun-Chan PARK, Abhishek ROY, Ki-Back KIM, Jae-Young KIM
  • Publication number: 20080273520
    Abstract: A communication network architecture including a broadband radio access network is provided. The architecture includes a terminal for transmitting an application layer service request message to request a service, a Policy Charging Rule Function (PCRF) for generating Quality of Service (QoS) parameters of an Internet Protocol (IP) layer using QoS parameters of an application layer contained in the application layer service request message, a first Policy Decision Function (PDF) for generating one or more QoS parameters of the IP layer in addition to the IP layer QoS parameters generated at the PCRF and a second PDF for generating a QoS parameter set of a radio access network using the IP layer QoS parameters generated at the PCRF and the one or more IP layer QoS parameters generated at the first PDF. The communication network guarantees an end-to-end QoS.
    Type: Application
    Filed: April 30, 2008
    Publication date: November 6, 2008
    Applicant: Samsung Electronics Co. Ltd.
    Inventors: Ki-Back KIM, Dong-Soo PARK, Dae-Woo LEE, Ji-Cheol LEE, Jung-Shin PARK, Seong-Min KIM
  • Publication number: 20080274729
    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: Application
    Filed: April 30, 2008
    Publication date: November 6, 2008
    Applicant: SAMSUNG ELECTRONICS CO. LTD.
    Inventors: Ki-Back KIM, Ji-Cheol LEE, Jung-Shin PARK
  • Publication number: 20080248807
    Abstract: A method for controlling a call, by a base station, in a communication system is provided. The method includes receiving a call admission request for call connection from a mobile station; determining whether to admit the call admission request taking into account a backhaul section capacity available in a backhaul section and a wireless section capacity available in a wireless section; and transmitting information indicating the determination result to the mobile station. The wireless section indicates a section between the base station and the mobile station, and the backhaul section indicates a section between the base station and a base station controller.
    Type: Application
    Filed: April 4, 2008
    Publication date: October 9, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-Back Kim, Ju-Yong Lee, Dong-Soo Park
  • Publication number: 20080240097
    Abstract: An apparatus and a method for a Multicast and Broadcast Service (MBS) in a Broadband Wireless Access (BWA) system are provided. A broadcasting server in a broadcasting service system includes a storage for storing broadcasting contents; a controller for determining relative offset information for a broadcasting start time with respect to each Internet Protocol (IP) packet; a generator for generating IP packets with the contents provided from the storage and recording the determined relative offset information in the generated IP packets; and a transmitter for transmitting the packets including the relative offset information to an Access Control Router (ACR).
    Type: Application
    Filed: March 31, 2008
    Publication date: October 2, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-Back KIM, Sang-Young Lee, Eun-Chan Park
  • Publication number: 20080212509
    Abstract: An apparatus and method for selecting, releasing, and changing a MultiCast and BroadCast Service (MCBCS) of a Mobile Station (MS) in a Broadband Wireless Access (BWA) system are provided. The method includes, upon receiving a request to select a specific channel, transmitting a channel selection request message for selecting the channel; determining whether a DSA request message including a Media Access Control (MAC) layer name tag for the channel is received from an Access Service Network-Gateway (ASN-GW), and, upon receiving the DSA request message, transmitting a DSA response message to the ASN-GW; and receiving a channel selection response message including information indicating a success or failure of the channel selection from an MCBCS server. Accordingly, there is an advantage in that an overall transmission delay is reduced for an MCBCS call process, and a processing capacity can be effectively utilized.
    Type: Application
    Filed: January 7, 2008
    Publication date: September 4, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-Back Kim, Jun-Hwan Oh, Sung-Bum Park, Seong-Min Kim, Min-Young Park, Kyung-Jin Kim
  • Publication number: 20080198797
    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: Application
    Filed: February 21, 2008
    Publication date: August 21, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Eun-Chan Park, Ki-Back Kim, Ju-Yong Lee
  • Publication number: 20080175237
    Abstract: Provided is an apparatus and method for transmitting/receiving a service guide in a Broadband Wireless Access (BWA) system. In the method, a service guide request message is transmitted to A MultiCast and BroadCast Service (MCBCS) server. A service guide response message including a service guide is received from the MCBCS server. The service guide is stored in a user terminal. A variety of factors necessitating the maintenance of an awake state of a user terminal can be eliminated. Thus, it is possible to prevent a waste of power, which may be caused by periodic uplink transmission due to the awake state of the user terminal, and a waste of air resources necessary for a signaling process.
    Type: Application
    Filed: January 23, 2008
    Publication date: July 24, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Ki-Back KIM
  • Publication number: 20080178269
    Abstract: In a communication system, a Mobile Station (MS) transmits a Multicast/Broadcast Service (MCBCS) authentication information transmission request message to an MCBCS server, and receives MCBCS authentication information from the MCBCS server in response to transmission of the MCBCS authentication information transmission request message. The MCBCS authentication information is information that the MCBCS server has derived using MCBCS MS profile information managed by an Authorization, Authentication and Accounting (AAA) server according to the MCBCS authentication information transmission request message, and the MCBCS MS profile information includes a random seed allocated to at least one MCBCS channel serviceable by the MS.
    Type: Application
    Filed: January 23, 2008
    Publication date: July 24, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-Back KIM, Ji-Cheol Lee, Jae-Woo Kwon
  • Publication number: 20080165750
    Abstract: An apparatus and method for a Multicast and Broadcast Service (MBS) in a Broadband Wireless Access (BWA) system. In a method for operating a user terminal in a BWA system, an idle timer is driven when a flow for unicast connection has no traffic in an awake mode. Whether a broadcast service is being received is checked when the idle timer expires. The user terminal transitions from the awake mode to a fake idle mode when the broadcast service is being received.
    Type: Application
    Filed: January 4, 2008
    Publication date: July 10, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Ki-Back KIM
  • Publication number: 20080130670
    Abstract: A method and apparatus for managing a buffer of a Radio Access Station (RAS) in a communication system are provided. An available buffer space determiner sets a threshold for each service class for scheduling packet input/output of the buffer according to priority of a service class, estimates and stores, upon receipt of a packet at the buffer, an available space size of the buffer after the packet reception, compares the estimated available space size of the buffer with a first threshold corresponding to a first service class indicative of a service class of the packet, and schedules packet input/output of the buffer according to the comparison result. A processor module schedules packet input/output of the buffer according to an output of the available buffer space determiner. The present invention can improve quality of services through service differentiation based on priorities of service classes and buffer management based on characteristics of the corresponding service traffics.
    Type: Application
    Filed: December 5, 2007
    Publication date: June 5, 2008
    Applicant: SAMSUNG ELECTRONICS CO. LTD.
    Inventors: Ki-Back KIM, Eun-Chan PARK, Han-Seok KIM
  • Publication number: 20080101220
    Abstract: Header suppression/compression apparatus and method for providing Multicast and Broadcast Service (MBS) in a Broadband Wireless Access (BWA) system are provided. The method includes checking an overhead ratio of a packet based on the MBS channels; when the overhead ratio of the packet is greater than a threshold, compressing a header of the packet according to a compression algorithm preset for the corresponding MBS channel or zone; and when the overhead ratio of the packet is less than the threshold, uncompressing the header of the packet.
    Type: Application
    Filed: October 31, 2007
    Publication date: May 1, 2008
    Applicant: SAMSUNG ELECTRONICS Co., LTD.
    Inventors: Ki-Back Kim, Jae-Woo Kim, Sung-Hong Wie
  • Publication number: 20080101271
    Abstract: Apparatus and method for multicast and broadcast service (MBS) in a broadband wireless access (BWA) system. The terminal state managing method includes examining whether a dormant timer of a terminal managed in an awake mode expires or not; when the dormant timer expires, examining whether the terminal receives a broadcast service; and when the terminal receives the broadcast service, managing the terminal in a fake awake mode.
    Type: Application
    Filed: October 31, 2007
    Publication date: May 1, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-Woo Kwon, Ki-Back Kim, Sung-Bum Park
  • Publication number: 20080089265
    Abstract: A system and method for transmitting/receiving a multicast/broadcast signal in a communication system are provided, in which if the communication system includes at least one zone to which the same service is provided and the zone includes at least one ASN_GW and at least one BS connected to the ASN_GW, the ASN_GW generates a second multicast/broadcast signal using a received first multicast/broadcast signal according to information about the zone, generates time information indicating a time when the BS is to transmit the second multicast/broadcast signal, and transmits the second multicast/broadcast signal and the time information to the BS.
    Type: Application
    Filed: October 15, 2007
    Publication date: April 17, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong-Soo Park, Ki-Back Kim, Hae-Jung Lim, Jin-Han Song, Jae-Woo Kwon, Eun-Chan Park
  • Patent number: 5769613
    Abstract: The present invention relates to a muffler apparatus of a compressor for hermetically and easily assembling a suction muffler and a base muffler disposed at the compressor so as to suck and attenuate the noise generated by refrigerant evaporated from an evaporator, the apparatus comprising: a suction muffler for being formed with a suction inlet for the refrigerant to be sucked thereinto and for being formed at one side thereof with a third tripping unit; a base muffler for being formed with a first and a second tripping unit protruded from the base muffler and into the third tripping unit protruded from the suction muffler, so that the base muffler and the suction muffler can be hermetically assembled to leave no gap therebetween.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: June 23, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Ki-Back Kim