Patents by Inventor Seung-Wan Ryu

Seung-Wan Ryu 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).

  • WSN-based context awareness engine
    Patent number: 8145445
    Abstract: A WSN-based context awareness engine applies spatial filtering to sensed data which is output from sensors included in a group to filter data in which an error does not occur, identifies a non-operated sensor, compares filtered data with at least one condition to determine a current state of a place corresponding to the group, and combines the determined current state and information regarding the group to generate a context-awareness result.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: March 27, 2012
    Assignee: Metarights Ltd.
    Inventors: Jang-Kyu Kim, Seung-Wan Ryu, Sei-Kwon Park, Yun-Yong Jung
  • Method for downlink packet scheduling using service delay time and channel state
    Patent number: 7986699
    Abstract: The present invention provides a method for downlink packet scheduling for scheduling a real-time service and a non-real-time service. The method for downlink packet scheduling includes steps of: a) classifying inputted packets based on a type of packet and storing a maximum delay time information of the packets; b) determining a user urgency of the packets by using the maximum delay time information and a channel state by using an instantaneous channel state, an average channel state, or a ratio of the instantaneous channel state and the average channel state; c) determining a priority based on the user urgency and the channel state; and d) transmitting the packets according to the priority.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: July 26, 2011
    Assignee: Electronics and Telecommunications Research Instittue
    Inventors: Seung-Wan Ryu, Byung-Han Ryu, Hyun-Hwa Seo, Chul-Sik Yoon
  • WSN-BASED CONTEXT AWARENESS ENGINE
    Publication number: 20090316594
    Abstract: A WSN-based context awareness engine applies spatial filtering to sensed data which is output from sensors included in a group to filter data in which an error does not occur, identifies a non-operated sensor, compares filtered data with at least one condition to determine a current state of a place corresponding to the group, and combines the determined current state and information regarding the group to generate a context-awareness result.
    Type: Application
    Filed: June 24, 2009
    Publication date: December 24, 2009
    Inventors: Jang-kyu KIM, Seung-wan Ryu, Sei-kwon Park, Yun-yong Jung
  • Method For Downlink Packet Scheduling Using Service Delay time And Channel State
    Publication number: 20070280260
    Abstract: The present invention provides a method for downlink packet scheduling for scheduling a real-time service and a non-real-time service. The method for downlink packet scheduling includes steps of: a) classifying inputted packets based on a type of packet and storing a maximum delay time information of the packets; b) determining a user urgency of the packets by using the maximum delay time information and a channel state by using an instantaneous channel state, an average channel state, or a ratio of the instantaneous channel state and the average channel state; c) determining a priority based on the user urgency and the channel state; and d) transmitting the packets according to the priority.
    Type: Application
    Filed: September 1, 2005
    Publication date: December 6, 2007
    Applicant: Electronics and Telecommunications Research Instit
    Inventors: Seung-Wan Ryu, Byung-Han Ryu, Hyun-Hwa Seo, Chul-Sik Yoon