Patents by Inventor Chul-ki Lee
Chul-ki 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: 11962208Abstract: Proposed is an air gap adjustment apparatus. The apparatus is for enabling an air gap between the inner surface of a stator and the outer surface of a rotor, which are installed in an inner space of a housing, to be uniform overall. A plurality of fastening holes are formed so as to surround a shaft through hole of an end plate constituting the housing. A fastener, which has passed through a bearing housing of a bearing, is fastened to each fastening hole so as to mount the bearing to the end plate. An adjusting member body of an adjusting member, which has passed through the bearing housing, is positioned in an adjusting member seating part which is formed at the entrance of each fastening hole. The adjusting member rotates about the adjusting member body so that a head part may adjust the position of the bearing.Type: GrantFiled: January 28, 2021Date of Patent: April 16, 2024Assignee: HYOSUNG HEAVY INDUSTRIES CORPORATIONInventors: Chul Jun Park, Sang Deok Kim, Seung Ki Kim, Yoon Zong Kim, Kyo Ho Lee, Kwang Jin Kim, Joo Seob Kim, Bit Na Oh
-
Patent number: 10667137Abstract: A method of providing contents in a communication system by a proxy server includes selecting one of a first content and a second content based on a first channel bandwidth usable by a terminal and a second channel bandwidth usable by a base station; and providing the selected content to the terminal, wherein the first content requires a wider channel bandwidth than a channel bandwidth of the second content.Type: GrantFiled: December 21, 2012Date of Patent: May 26, 2020Assignee: Samsung Electronics Co., Ltd.Inventors: Chul-Ki Lee, Hyeon-Jin Kang, Sang-Jun Moon, Yong-Seok Park
-
Patent number: 10547705Abstract: The present invention relates to a proxy apparatus and to a caching method of same. The caching method of the proxy apparatus according to one embodiment of the present invention includes the steps of: receiving a transmission request for content that can be divided into a plurality of blocks and instruction information for the playback position of the content from an external device; obtaining a header block that includes the header of the content when receiving the transmission request; identifying an intermediate block that corresponds to the playback position using the header; requesting and obtaining the intermediate block through a network when the identified intermediate block is not cached in the proxy apparatus; and transmitting to the external device at least a portion of the header and at least a portion of the intermediate block corresponding to the request.Type: GrantFiled: July 3, 2013Date of Patent: January 28, 2020Assignee: Samsung Electronics Co., Ltd.Inventors: Jiangwei Xu, Sang Jun Moon, Young Seok Park, Chul Ki Lee, Jung Hwan Lim
-
Patent number: 9819465Abstract: According to the present invention, a base station determines from a wireless communication system whether data to be transmitted is a response signal-required data that requires a response signal, estimates the amount of buffer of a user equipment (UE) at the point when the response signal is to be transmitted, predicts a required resource amount of the UE that is required for transmitting the response signal by using the buffer amount of the UE that is estimated, and schedules for allocating a resource to the UE on the basis of the required resource amount that is predicted.Type: GrantFiled: November 15, 2012Date of Patent: November 14, 2017Assignee: Samsung Electronics Co., Ltd.Inventors: Chul-Ki Lee, Sang-Jun Moon, Yong-Seok Park, Jung-Hwan Lim, Jiangwei Xu
-
Patent number: 9794320Abstract: In a wireless communication system, a mobile terminal providing a web service receives information about a web page for a web service from a mobile terminal, receives at least one embedded object included in the web page from a web server, sets a Discontinuous Reception (DRX) interval for the mobile terminal based on a size of the at least one embedded object, transmits information about the set DRX interval to the mobile terminal, and transmits the at least one embedded object to the mobile terminal at a time the set DRX interval ends.Type: GrantFiled: November 8, 2013Date of Patent: October 17, 2017Assignee: Sasmsung Electronics Co., Ltd.Inventors: Chul-Ki Lee, Sang-Jun Moon, Yong-Seok Park
-
Patent number: 9767033Abstract: In the present invention, a base station determines from a communication system whether a first content, which is requested by a mobile terminal, is saved on a cache memory, attributes a predetermined priority ranking to the first content and saves same on the cache memory when the first content is not saved on the cache memory, and updates the priority ranking of the first content on the basis of a predicted popularity of the first content, wherein the predicted popularity is decided on the basis of change in the number of views of a content that corresponds to a category of the first content.Type: GrantFiled: November 15, 2012Date of Patent: September 19, 2017Assignee: Samsung Electronics Co., Ltd.Inventors: Chul-Ki Lee, Sang-Jun Moon, Yong-Seok Park, Jung-Hwan Lim, Jiangwei Xu
-
Patent number: 9686699Abstract: A method for estimating an available bandwidth for each User Equipment (UE) in a mobile communication system comprises: a process of receiving estimated bandwidth information for at least one UE from an enhanced node B; a process of checking whether the estimated bandwidth information is received from a Medium Access Control (MAC) layer constituting said enhanced node B, or received through a Radio Link Control (RLC) layer or a Packet Data Control Protocol (PDCP) layer; a process of updating channel quality information using said estimated bandwidth information if it is checked that said estimated bandwidth information is received through the MAC layer; a process of updating an average value weighted with respect to the number of bytes of the bandwidth served by said enhanced node B using the estimated bandwidth information if it is checked that said estimated bandwidth information is received through the RLC or PDCP layer; and a process of calculating the bandwidth currently available by at least one UE usinType: GrantFiled: November 1, 2012Date of Patent: June 20, 2017Assignee: Samsung Electronics Co., LtdInventors: Chul-Ki Lee, Sang-Jun Moon, Yong-Seok Park
-
Patent number: 9648528Abstract: A method and apparatus for supporting a handover through the Internet. A source proxy performs receiving, through an eNB from a UE, a connection request to a server, establishing a first TCP session with an anchor proxy designated for the server, and transferring data received from the server through the first TCP session, receiving a handover preparation notification including an IP address of the UE from the eNB, as the UE is handed over to a target eNB; transferring session information associated with the first TCP session and information associated with a target proxy related with the target base station; transferring, to the target proxy, the session information associated with the first TCP session, and when a handover start notification is received from the eNB, freezing the first TCP session, and transferring, to the target proxy, state information associated with data being transmitted through the first TCP session.Type: GrantFiled: September 5, 2013Date of Patent: May 9, 2017Assignee: SAMSUNG ELECTRONICS CO., LTDInventors: Chul-Ki Lee, Sang-Jun Moon, Yong-Seok Park
-
Patent number: 9609684Abstract: A method for receiving data in a User Equipment (UE) in a mobile content network is provided. The method includes transmitting a request message, which requests a content, to a first Digital Unit (DU), receiving an Internet Protocol (IP)_ADD message, including information of a second DU which caches the content, from the first DU, updating a Stream Control Transmission Protocol (SCTP) connection according to the information of the second DU included in the IP_ADD message, and receiving data from the second DU using the updated SCTP connection.Type: GrantFiled: June 13, 2014Date of Patent: March 28, 2017Assignee: Samsung Electronics Co., Ltd.Inventors: Chul-Ki Lee, Jung-Shin Park, Yeong-Moon Son, Antony Franklin
-
Patent number: 9553814Abstract: A method for controlling data flow by a proxy server connected between a User Equipment (UE) and a content server is disclosed. The proxy server estimates a first amount of data reception indicating an amount of data received by the UE and calculates a second amount of data reception indicating an amount of data received by the proxy server from the content server. The proxy server delays transmission of acknowledgement (ACK) on data received by the proxy server from the content server and waits until a time allowed for the transmission, if the second amount of data reception is greater than the first amount of data reception by a predetermined threshold. The resent disclosure may prevent a waste of network load and unnecessary resources by the proxy server controlling download data rate from the content server.Type: GrantFiled: December 18, 2012Date of Patent: January 24, 2017Assignee: Samsung Electronics Co., Ltd.Inventors: Chul-Ki Lee, Sang-Jun Moon, Yong-Seok Park, Jiangwei Xu, Jung-Hwan Lim
-
Patent number: 9473984Abstract: A method of controlling congestion in a base station of a wireless communication system is provided. The method includes receiving a Service Data Unit (SDU) that includes pieces of data forwarded through a caching proxy, driving a timer each time an SDU is received for processing the SDU using a communication protocol, determining whether the SDU has been processed using the communication protocol until expiration of the timer, and controlling a transmission rate of the caching proxy based on a number of SDUs consecutively discarded or a number of SDUs consecutively transmitted depending on whether the timer has expired.Type: GrantFiled: May 24, 2013Date of Patent: October 18, 2016Assignee: Samsung Electronics Co., Ltd.Inventors: Jiangwei Xu, Sang-Jun Moon, Yong-Seok Park, Chul-Ki Lee, Jung-Hwan Lim
-
Patent number: 9392489Abstract: The present invention relates to an apparatus and method for providing a web service in a wireless communication system. The apparatus for providing the web service includes: a proxy unit receiving/sending data through the internet; a packet data conversion protocol (PDCP) unit producing and outputting at least one PDCP protocol data unit (PDU) by using the data; and a control unit monitoring the data received from the proxy unit and controlling the proxy unit to transmit data of a size acceptable by the PDCP unit on the basis of the data capacity of the PDCP unit.Type: GrantFiled: October 31, 2012Date of Patent: July 12, 2016Assignee: Samsung Electronics Co., LtdInventors: Jiangwei Xu, Yong-Seok Park, Sang-Jun Moon, Jung-Hwan Lim, Chul-Ki Lee
-
Patent number: 9106535Abstract: A method and apparatus manage a buffer of a lower network node in a communication system. A current queue length of the buffer is monitored in every measurement time. A logical region in which the current queue length is included is determined, among a plurality of logical regions included in the buffer. Each of the logical regions corresponds to a queue length determined by using an upper threshold and a lower threshold of a total queue length of the buffer. A congestion state of a network is detected, and a first queue length is readjusted when the current queue length is included in the first queue length which corresponds to a first logical region that exceeds the upper threshold. And a network congestion state signal that represents the detected congestion state of the network is transmitted to the upper network node.Type: GrantFiled: January 21, 2011Date of Patent: August 11, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seong-Ryong Kang, Byung-Suk Kim, Dong-Sook Kim, Chul-Ki Lee, Hong-Kyu Jeong, Jeong-Jae Won
-
Publication number: 20150222725Abstract: The present invention relates to a proxy apparatus and to a caching method of same. The caching method of the proxy apparatus according to one embodiment of the present invention includes the steps of: receiving a transmission request for content that can be divided into a plurality of blocks and instruction information for the playback position of the content from an external device; obtaining a header block that includes the header of the content when receiving the transmission request; identifying an intermediate block that corresponds to the playback position using the header; requesting and obtaining the intermediate block through a network when the identified intermediate block is not cached in the proxy apparatus; and transmitting to the external device at least a portion of the header and at least a portion of the intermediate block corresponding to the request.Type: ApplicationFiled: July 3, 2013Publication date: August 6, 2015Inventors: Jiangwei Xu, Sang Jun Moon, Young Seok Park, Chul Ki Lee, Jung Hwan Lim
-
Publication number: 20150088659Abstract: A method of providing contents in a communication system by a proxy server includes selecting one of a first content and a second content based on a first channel bandwidth usable by a terminal and a second channel bandwidth usable by a base station; and providing the selected content to the terminal, wherein the first content requires a wider channel bandwidth than a channel bandwidth of the second content.Type: ApplicationFiled: December 21, 2012Publication date: March 26, 2015Inventors: Chul-Ki Lee, Hyeon-Jin Kang, Sang-Jun Moon, Yong-Seok Park
-
Publication number: 20150029843Abstract: The present invention relates to an apparatus and method for providing a web service in a wireless communication system. The apparatus for providing the web service includes: a proxy unit receiving/sending data through the internet; a packet data conversion protocol (PDCP) unit producing and outputting at least one PDCP protocol data unit (PDU) by using the data; and a control unit monitoring the data received from the proxy unit and controlling the proxy unit to transmit data of a size acceptable by the PDCP unit on the basis of the data capacity of the PDCP unit.Type: ApplicationFiled: October 31, 2012Publication date: January 29, 2015Inventors: Jiangwei Xu, Yong-Seok Park, Sang-Jun Moon, Jung-Hwan Lim, Chul-Ki Lee
-
Publication number: 20150006625Abstract: A method for controlling data flow by a proxy server connected between a User Equipment (UE) and a content server is disclosed. The proxy server estimates a first amount of data reception indicating an amount of data received by the UE and calculates a second amount of data reception indicating an amount of data received by the proxy server from the content server. The proxy server delays transmission of acknowledgement (ACK) on data received by the proxy server from the content server and waits until a time allowed for the transmission, if the second amount of data reception is greater than the first amount of data reception by a predetermined threshold. The resent disclosure may prevent a waste of network load and unnecessary resources by the proxy server controlling download data rate from the content server.Type: ApplicationFiled: December 18, 2012Publication date: January 1, 2015Inventors: Chul-Ki Lee, Sang-Jun Moon, Yong-Seok Park, Jiangwei Xu, Jung-Hwan Lim
-
Publication number: 20140369259Abstract: A method for receiving data in a User Equipment (UE) in a mobile content network is provided. The method includes transmitting a request message, which requests a content, to a first Digital Unit (DU), receiving an Internet Protocol (IP)_ADD message, including information of a second DU which caches the content, from the first DU, updating a Stream Control Transmission Protocol (SCTP) connection according to the information of the second DU included in the IP_ADD message, and receiving data from the second DU using the updated SCTP connection.Type: ApplicationFiled: June 13, 2014Publication date: December 18, 2014Inventors: Chul-Ki LEE, Jung-Shin PARK, Yeong-Moon SON, Antony FRANKLIN
-
Publication number: 20140344525Abstract: In the present invention, a base station determines from a communication system whether a first content, which is requested by a mobile terminal, is saved on a cache memory, attributes a predetermined priority ranking to the first content and saves same on the cache memory when the first content is not saved on the cache memory, and updates the priority ranking of the first content on the basis of a predicted popularity of the first content, wherein the predicted popularity is decided on the basis of change in the number of views of a content that corresponds to a category of the first content.Type: ApplicationFiled: November 15, 2012Publication date: November 20, 2014Inventors: Chul-Ki Lee, Sang-Jun Moon, Yong-Seok Park, Jung-Hwan Lim, Jiangwei Xu
-
Publication number: 20140314055Abstract: According to the present invention, a base station determines from a wireless communication system whether data to be transmitted is a response signal-required data that requires a response signal, estimates the amount of buffer of a user equipment (UE) at the point when the response signal is to be transmitted, predicts a required resource amount of the UE that is required for transmitting the response signal by using the buffer amount of the UE that is estimated, and schedules for allocating a resource to the UE on the basis of the required resource amount that is predicted.Type: ApplicationFiled: November 15, 2012Publication date: October 23, 2014Applicant: Samsung Electronics Co., Ltd.Inventors: Chul-Ki Lee, Sang-Jun Moon, Yong-Seok Park, Jung-Hwan Lim, Jiangwei Xu