Patents by Inventor Sun-Hwa Lim

Sun-Hwa Lim 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: 10993231
    Abstract: A method of transmitting control information by an end node in a wireless communication system supporting multi-channel transmission includes: transmitting control information to a center node on a first channel among multiple channels within a control period of a wireless frame when the first channel is in an idle state; transmitting the control information to the center node on a second channel when the first channel is not in the idle state and the second channel is in the idle state, the second channel being selected from channels other than the first channel among the multiple channels; and transmitting the control information to the center node in a subsequent wireless frame when the second channel is not in the idle state.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: April 27, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Geon Min Yeo, Sun Hwa Lim, Young Il Kim, Dae Geun Park, Soon Yong Song, Byeong Cheol Choi
  • Patent number: 10902537
    Abstract: A logistics information processing server includes a data processor configured to receive environment sensing data collected from at least one environmental sensor disposed in a cargo storage device in which at least one cargo is stored and cargo related information collected from a cargo tag attached to the at least one cargo, and to perform processing by classifying the environment sensing data and the cargo related data into cargo storage environment data, cargo information, and transportation environment information according to data attributes; and a logistics trust index generator configured to generate a logistics trust index indicating a degree of influence exerted on the quality of the cargo from the cargo storage environment data, cargo information, and transportation environment information output by the data processor.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: January 26, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Young Il Kim, Byeong Cheol Choi, Hyo Chan Bang, Geon Min Yeo, Sun Hwa Lim, Dae Geun Park, Soon Yong Song
  • Patent number: 10741078
    Abstract: A method for providing a traffic safety service of a traffic safety service server communicating with a client terminal includes: receiving sensor data of each sensor from the client terminal; classifying the sensor data into data according to at least one specific time slot for each sensor and calculating a safety score of each of the at least time slot; calculating an average of the safety scores of the at least time slot and calculating a safety score for each sensor, and calculating a safety index on the basis of the safety score for each sensor and a weight assigned to each sensor.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: August 11, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Young Il Kim, Dae Geun Park, Hyo Chan Bang, Soon Yong Song, Geon Min Yeo, Sun Hwa Lim, Byeong Cheol Choi
  • Patent number: 10462844
    Abstract: A dynamic packet relay method of a personal area network (PAN) coordinator in a sensor network includes receiving a Child_Register message that includes information about a device associated with a coordinator and building or updating a network hierarchical structure; monitoring reception of a packet or a beacon from the coordinator and determining whether the coordinator is defective or not; and in response to a determination that the coordinator is defective, changing the current coordinator to one of devices belonging to a PAN as a new coordinator.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: October 29, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Geon Min Yeo, Young Il Kim, Yong Tae Lee, Dae Geun Park, Sun Hwa Lim, Won Ryu
  • Patent number: 10449981
    Abstract: An apparatus for dynamically configuring a wireless sensor relay network for monitoring train activity according to the present invention includes a plurality of wireless sensors that wirelessly transmit sensor data obtained by measuring heat and vibration of a train running unit, a plurality of coordinator units that are located in train cars, and receive the sensor data from one or more wireless sensors located within the same train car, a plurality of wireless relay units that are located in the train cars, form a wireless sensor relay network with the wireless relay unit located in a neighboring train car, and transmit the sensor data received from the coordinator units, and a gateway unit that receives the sensor data from the plurality of wireless relay units through the wireless sensor relay network, and transmits the received sensor data to a control center.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: October 22, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Young Il Kim, Dae Geun Park, Geon Min Yeo, Yong Tae Lee, Hyun Woo Lee, Sun Hwa Lim
  • Patent number: 10333377
    Abstract: A hybrid self-generation apparatus includes a vibration source based generation part installed in a mechanical apparatus and converting vibration energy generated during operation or movement of the mechanical apparatus into first electric energy; a wind power source based generation part installed in the mechanical apparatus and converting kinetic energy of air generated in periphery of the mechanical apparatus during operation or movement of the mechanical apparatus into second electric energy; and a power storage part storing the first electric energy and the second electric energy. Also, the wind power source based generation part includes at least one air controller, and the wind power source based generation part automatically operates or stops power generation according to a movement speed of the mechanical apparatus in accordance with operation of the at least one air controller.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: June 25, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Young Il Kim, Byeong Cheol Choi, Hyo Chan Bang, Geon Min Yeo, Sun Hwa Lim, Dae Geun Park, Soon Yong Song
  • Publication number: 20180338311
    Abstract: A method of transmitting control information by an end node in a wireless communication system supporting multi-channel transmission includes: transmitting control information to a center node on a first channel among multiple channels within a control period of a wireless frame when the first channel is in an idle state; transmitting the control information to the center node on a second channel when the first channel is not in the idle state and the second channel is in the idle state, the second channel being selected from channels other than the first channel among the multiple channels; and transmitting the control information to the center node in a subsequent wireless frame when the second channel is not in the idle state.
    Type: Application
    Filed: May 18, 2018
    Publication date: November 22, 2018
    Inventors: Geon Min YEO, Sun Hwa LIM, Young Il KIM, Dae Geun PARK, Soon Yong SONG, Byeong Cheol CHOI
  • Publication number: 20180166962
    Abstract: A hybrid self-generation apparatus includes a vibration source based generation part installed in a mechanical apparatus and converting vibration energy generated during operation or movement of the mechanical apparatus into first electric energy; a wind power source based generation part installed in the mechanical apparatus and converting kinetic energy of air generated in periphery of the mechanical apparatus during operation or movement of the mechanical apparatus into second electric energy; and a power storage part storing the first electric energy and the second electric energy. Also, the wind power source based generation part includes at least one air controller, and the wind power source based generation part automatically operates or stops power generation according to a movement speed of the mechanical apparatus in accordance with operation of the at least one air controller.
    Type: Application
    Filed: December 5, 2017
    Publication date: June 14, 2018
    Inventors: Young Il Kim, Byeong Cheol Choi, Hyo Chan Bang, Geon Min Yeo, Sun Hwa Lim, Dae Geun Park, Soon Yong Song
  • Publication number: 20180144429
    Abstract: An a logistics information processing server includes a data processor configured to receive environment sensing data collected from at least one environmental sensor disposed in a cargo storage device in which at least one cargo is stored and cargo related information collected from a cargo tag attached to the at least one cargo, and to perform processing by classifying the environment sensing data and the cargo related data into cargo storage environment data, cargo information, and transportation environment information according to data attributes; and a logistics trust index generator configured to generate a logistics trust index indicating a degree of influence exerted on the quality of the cargo from the cargo storage environment data, cargo information, and transportation environment information output by the data processor.
    Type: Application
    Filed: November 22, 2017
    Publication date: May 24, 2018
    Inventors: Young Il KIM, Byeong Cheol CHOI, Hyo Chan BANG, Geon Min YEO, Sun Hwa LIM, Dae Geun PARK, Soon Yong SONG
  • Publication number: 20180144634
    Abstract: A method for providing a traffic safety service of a traffic safety service server communicating with a client terminal includes: receiving sensor data of each sensor from the client terminal; classifying the sensor data into data according to at least one specific time slot for each sensor and calculating a safety score of each of the at least time slot; calculating an average of the safety scores of the at least time slot and calculating a safety score for each sensor, and calculating a safety index on the basis of the safety score for each sensor and a weight assigned to each sensor.
    Type: Application
    Filed: November 22, 2017
    Publication date: May 24, 2018
    Inventors: Young Il KIM, Dae Geun PARK, Hyo Chan BANG, Soon Yong SONG, Geon Min YEO, Sun Hwa LIM, Byeong Cheol CHOI
  • Publication number: 20170137047
    Abstract: An apparatus for dynamically configuring a wireless sensor relay network for monitoring train activity according to the present invention includes a plurality of wireless sensors that wirelessly transmit sensor data obtained by measuring heat and vibration of a train running unit, a plurality of coordinator units that are located in train cars, and receive the sensor data from one or more wireless sensors located within the same train car, a plurality of wireless relay units that are located in the train cars, form a wireless sensor relay network with the wireless relay unit located in a neighboring train car, and transmit the sensor data received from the coordinator units, and a gateway unit that receives the sensor data from the plurality of wireless relay units through the wireless sensor relay network, and transmits the received sensor data to a control center.
    Type: Application
    Filed: November 18, 2016
    Publication date: May 18, 2017
    Inventors: Young Il KIM, Dae Geun PARK, Geon Min YEO, Yong Tae LEE, Hyun Woo LEE, Sun Hwa LIM
  • Publication number: 20160277948
    Abstract: A dynamic packet relay method of a personal area network (PAN) coordinator in a sensor network includes receiving a Child_Register message that includes information about a device associated with a coordinator and building or updating a network hierarchical structure; monitoring reception of a packet or a beacon from the coordinator and determining whether the coordinator is defective or not; and in response to a determination that the coordinator is defective, changing the current coordinator to one of devices belonging to a PAN as a new coordinator.
    Type: Application
    Filed: March 16, 2016
    Publication date: September 22, 2016
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Geon Min YEO, Young II Kim, Yong Tae Lee, Dae Geun Park, Sun Hwa Lim, Won Ryu
  • Patent number: 9420539
    Abstract: A method for controlling transmission of sensor data by a coordinator of a wireless sensor network, the method including transmitting a data frame received from a sensor device to a PAN coordinator; in response to no acknowledgement message being received from the PAN coordinator during a predetermined period of time for waiting to receive an acknowledgement message, retransmitting the data frame; and, in response to a number of retransmission attempts of the data frame being exceeding a maximum number of retransmission attempts, transmitting Data Transmission Stop Notification to the sensor device in order to stop to receive any data frame from the sensor device.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: August 16, 2016
    Assignee: Electronics and Telecommunications Research Institute
    Inventor: Sun-Hwa Lim
  • Publication number: 20160144875
    Abstract: Provided is an apparatus for distributed processing of train monitoring traffic based on a hierarchical wireless sensor network, the apparatus including: a wireless sensor node configured to generate sensor data by measuring states of a train; a wireless mesh network (WSN) manager configured to classify the sensor data into priority data and non-priority data according to change characteristics, and to transmit the priority data to a sensor monitoring center through a wireless communication network and the non-priority data to wireless mesh nodes through a wireless mesh network; and one or more wireless mesh nodes configured to be spaced apart at predetermined intervals on a railway side, and to transmit the non-priority data, received from the WSN manager, to the sensor monitoring center.
    Type: Application
    Filed: November 23, 2015
    Publication date: May 26, 2016
    Inventors: Young Il KIM, Won RYU, Dae Geun PARK, Geon Min YEO, Yong Tae LEE, Sun Hwa LIM
  • Publication number: 20150173021
    Abstract: A method for controlling transmission of sensor data by a coordinator of a wireless sensor network, the method including transmitting a data frame received from a sensor device to a PAN coordinator; in response to no acknowledgement message being received from the PAN coordinator during a predetermined period of time for waiting to receive an acknowledgement message, retransmitting the data frame; and, in response to a number of retransmission attempts of the data frame being exceeding a maximum number of retransmission attempts, transmitting Data Transmission Stop Notification to the sensor device in order to stop to receive any data frame from the sensor device.
    Type: Application
    Filed: April 10, 2014
    Publication date: June 18, 2015
    Applicant: Electronics and Telecommunications Research Institute
    Inventor: Sun-Hwa LIM
  • Patent number: 8762721
    Abstract: A method for a terminal including a first media access control (MAC) layer and a second MAC layer to create an authorization key includes performing a first network entry process to a base station through the first MAC layer, and performing a second network entry process for a frequency overlay to the base station through the second MAC layer. In this instance, the first network entry process includes acquiring a key for generating an authorization key through an authentication process according to an authentication method negotiated with the base station, and generating a first authorization key through the key for generating the authorization key. The second network entry process includes generating a second authorization key by using the key generated in the first network entry process for generating the authorization key.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: June 24, 2014
    Assignees: Samsung Electronics Co., Ltd., Electronics and Telecommunications Research Institute
    Inventors: Sun-Hwa Lim, Sang Ho Lee
  • Patent number: 8711794
    Abstract: Disclosed are a system and a method for receiving an MBMS broadcasting service. In the present invention, in a mobile communication/wireless communication system, an MBMS service is provided by synchronizing a unicast bearer with a multicast bearer through scheduling information mapping at the time of transmitting a broadcast/multicast service through a unicast. Further, the present invention presents even a method for improving quality of experience (QoE) of the service by providing the MBMS service through the multicast bearer and the unicast bearer simultaneously. According to the present invention, MBMS services of various service qualities can be provided depending on wireless quality of a terminal or the capability of the terminal at the time of providing the MBMS service.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: April 29, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Mi Young Yun, Jung Mo Moon, Sang Ho Lee, Eun Hee Hyun, Jai Hyung Cho, Jee Hyeon Na, Chul Park, Sun Hwa Lim, Hyun Suk Roh, Dae Ik Kim, Jae Ho Kim, Yeong Jin Kim, Dae Sik Kim
  • Patent number: 8656480
    Abstract: The present invention relates to a subscriber station security-related parameter negotiation method in a wireless portable Internet system. The subscriber station security-related parameter negotiation method includes security-related parameters in transmitting/receiving basic capability negotiation request messages and basic capability negotiation response messages such that the subscriber station and the base station negotiate the subscriber station security-related parameters. The security-related parameters include an authorization policy support subfield used to negotiate an authorization policy between the subscriber station and the base station, and message authentication code mode subfields used to negotiate a message authentication code mode.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: February 18, 2014
    Assignees: Samsung Electronics Co., Ltd, Electronics and Telecommunications Research Institute, KT Corporation, SK Telecom Co., Ltd, Hanaro Telecom., Inc.
    Inventors: Seok-Heon Cho, Tae-Yong Lee, Sun-Hwa Lim, Chul-Sik Yoon, Jun-Hyuk Song, Ji-Cheol Lee, Yong Chang
  • Patent number: 8650592
    Abstract: Provided is a method and apparatus for reducing zapping delay, which may transmit base layer data for each burst in a time-slicing scheme, and output the base layer data of a channel to be changed at the time of changing the channel, thereby reducing the zapping delay.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: February 11, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jai Hyung Cho, Sang Ho Lee, Yeong Jin Kim, Jee Hyeon Na, Jung Mo Moon, Dae Ik Kim, Jae Ho Kim, Eun Hee Hyun, Hyun Suk Roh, Chul Park, Sun Hwa Lim, Mi Young Yun, Ho Choong Cho, Doug Young Suh, Chul Keun Kim, Eun Ju Park
  • Publication number: 20120163274
    Abstract: Disclosed are a system and a method for receiving an MBMS broadcasting service. In the present invention, in a mobile communication/wireless communication system, an MBMS service is provided by synchronizing a unicast bearer with a multicast bearer through scheduling information mapping at the time of transmitting a broadcast/multicast service through a unicast. Further, the present invention presents even a method for improving quality of experience (QoE) of the service by providing the MBMS service through the multicast bearer and the unicast bearer simultaneously. According to the present invention, MBMS services of various service qualities can be provided depending on wireless quality of a terminal or the capability of the terminal at the time of providing the MBMS service.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 28, 2012
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Mi Young YUN, Jung Mo MOON, Sang Ho LEE, Eun Hee HYUN, Jai Hyung CHO, Jee Hyeon NA, Chul PARK, Sun Hwa LIM, Hyun Suk ROH, Dae Ik KIM, Jae Ho KIM, Yeong Jin KIM, Dae Sik KIM