Patents by Inventor Hwan Gu Lee

Hwan Gu Lee 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: 7801080
    Abstract: Provided is a root mobile router and the operating method thereof in a dynamically composed moving network, capable of forming a self-configuring ad-hoc network between wireless personal area networks (WPANs) of each user in a moving network and supporting a stable connection between the network and the Internet. The method includes the steps of: receiving state information of multiple access networks and selecting an optimal access network in order to connect to the Internet; receiving a result of the selection and activating an interface of the selected access network; changing the selected access network to the activated access network interface; and updating routing path information automatically and stably transmitting an IP packet to the Internet through the selected access network interface. Therefore, a personal mobile terminal can be utilized as a mobile router.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: September 21, 2010
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Won Tae Kim, Heung Nam Kim, Sun Ja Kim, Do Hyung Kim, Jae Pyeong Kim, Hwan Gu Lee
  • Patent number: 7684396
    Abstract: A transmission apparatus having a plurality of network interfaces and a transmission method using a plurality of the network interfaces are provided. The transmission apparatus includes: a session information extraction unit which extracts session information of an IP packet; a network interface determination unit which determines a network interface associated with session information of the IP packet based on a table for mapping sessions to the network interfaces according to available bandwidths of the network interfaces; and a traffic distribution unit which transmits the IP packet to the determined network interface. Accordingly, traffic is distributed over a plurality of network interfaces, so that optimal communication performance can be ensured in a simultaneous multiple-mode connection environment, and network resources can be efficiently utilized.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: March 23, 2010
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae Pyeong Kim, Do Hyung Kim, Jin Suk Ma, Won Tae Kim, Byung Chul Tak, Hwan Gu Lee, Sun Ja Kim
  • Publication number: 20090125765
    Abstract: Provided is an apparatus and method for certifying a hardware abstraction layer in a mobile terminal. The apparatus includes: a communication unit for receiving a predetermined test case from an external host certifying system and transmitting a test result of performing the received test cast to the host certifying system; an event receiver for receiving a test result of performing an event type test case from a hardware abstraction layer; and a controller for controlling the hardware abstraction layer to perform the test case received through the communication unit, and receiving the test result of performing the received test case received from the event receiver or the hardware abstraction layer and transmitting the received test result to the host certifying system.
    Type: Application
    Filed: November 24, 2005
    Publication date: May 14, 2009
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sang-Yun Lee, Hwan-Gu Lee, Woo-Sik Kim, Jae-Ho Lee, Sun-Ja Kim, Heung-Nam Kim
  • Publication number: 20090047970
    Abstract: The present invention relates to a method, apparatus and system for network resource reservation and a mobile terminal therefor. Provided are a method, apparatus and system for minimizing unnecessary network resource reservation by predicting an expected direction of a terminal. The method for network resource reservation based on a moving speed of a mobile terminal includes: receiving a request for network resource reservation from the mobile terminal; calculating an expected moving direction of the mobile terminal, based on a speed-based moving probability model represented by a probability density function for a movable direction dependent on the moving speed of the mobile terminal, a moving speed of the mobile terminal, and position information of the mobile terminal; and performing network resource reservation for wireless cells included in the calculated expected moving direction. Thus, unnecessary network resource reservation can be minimized by predicting the moving direction of the terminal.
    Type: Application
    Filed: April 14, 2008
    Publication date: February 19, 2009
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Won Tae Kim, Do Hyung Kim, Hwan Gu Lee, Kyung Hee Lee, Seung Min Park
  • Publication number: 20080279152
    Abstract: Provided are a method and apparatus for performing power consumption based handover between hybrid networks. The method includes listing candidate networks based on a traffic class and terminal power consumption expected for each of the hybrid networks, and selecting a network for the handover according to the traffic class and a user preference from among the listed candidate networks. Accordingly, power can be saved, and simultaneously a network can be effectively selected.
    Type: Application
    Filed: March 13, 2008
    Publication date: November 13, 2008
    Applicants: Electronics and Telecommunications Research Institute, Industry-University Cooperation Foundation Hanyang University
    Inventors: Won-Tae Kim, Sun Ja Kim, Do-Hyung Kim, Hwan-Gu Lee, Jae-Pyeong Kim, Inwhee Joe
  • Publication number: 20080095113
    Abstract: Provided is a root mobile router and the operating method thereof in a dynamically composed moving network, capable of forming a self-configuring ad-hoc network between wireless personal area networks (WPANs) of each user in a moving network and supporting a stable connection between the network and the Internet. The method includes the steps of: receiving state information of multiple access networks and selecting an optimal access network in order to connect to the Internet; receiving a result of the selection and activating an interface of the selected access network; changing the selected access network to the activated access network interface; and updating routing path information automatically and stably transmitting an IP packet to the Internet through the selected access network interface. Therefore, a personal mobile terminal can be utilized as a mobile router.
    Type: Application
    Filed: August 7, 2007
    Publication date: April 24, 2008
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Won Tae KIM, Heung Nam KIM, Sun Ja KIM, Do Hyung KIM, Jae Pyeong KIM, Hwan Gu LEE