Patents by Inventor Joo-Young Baek
Joo-Young Baek 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).
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Patent number: 9451552Abstract: A method and a device for managing resources of a base station in a wireless communication system is provided. The method comprises: calculating an average resource use of serving resources, which are used as downlinks from a serving base station to a plurality of communication terminals; selecting one of the communication terminals, which has a maximum interference from a neighbor base station, if the calculated average resource use exceeds a preset threshold; and making a reservation for at least one of neighbor resources used as downlinks from the neighbor base station, the at least one neighbor resource corresponding to the serving resource for the selected communication terminal, so that the neighbor base station may decrease transmission power in the at least one neighbor resource.Type: GrantFiled: December 8, 2011Date of Patent: September 20, 2016Assignees: Samsung Electronics Co., Ltd., Postech Academy-Industry FoundationInventors: Chae Gwon Lim, Young Joo Suh, Beom Sik Bae, Song Yean Cho, Dong Wook Kim, Joo Young Baek, Jeong Yoon Lee, Jae Pil Jeong
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Patent number: 9084225Abstract: Provided is a bidirectional service flow management method in a wideband wireless connection communication system, and more particularly, a method of performing a bidirectional flow establishment. The method of providing a flow service in an IEEE 802.16/WiBro includes: generating a revised dynamic service addition (DSA) related message in which an area for designating bidirectional flow management information is allocated from a standard DSA related message; and performing a bidirectional flow initialization process between a subscriber station (SS) and a base station (BS) via single control message negotiation based on the revised DSA related message.Type: GrantFiled: August 28, 2008Date of Patent: July 14, 2015Assignees: POSTECH ACADEMY-INDUSTRY FOUNDATION, POSTDATA CO., LTD, POSCO RESEARCH ASSOCIATION, POSCOInventors: Joo-Young Baek, Min-Kon Kwak, Dong-Hee Kwon, Young Joo Suh
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Publication number: 20130242935Abstract: The present invention relates to a method and a device for managing resources of a base station in a wireless communication system. The method comprises: calculating an average resource use of serving resources, which are used as downlinks from a serving base station to a plurality of communication terminals; selecting one of the communication terminals, which has a maximum interference from a neighbor base station, if the calculated average resource use exceeds a preset threshold; and making a reservation for at least one of neighbor resources used as downlinks from the neighbor base station, the at least one neighbor resource corresponding to the serving resource for the selected communication terminal, so that the neighbor base station may decrease transmission power in the at least one neighbor resource.Type: ApplicationFiled: December 8, 2011Publication date: September 19, 2013Applicants: POSTECH ACADEMY-INDUSTRY FOUNDATION, SAMSUNG ELECTRONICS CO., LTD.Inventors: Chae Gwon Lim, Young Joo Suh, Beom Sik Bae, Song Yean Cho, Dong Wook Kim, Joo Young Baek, Jeong Yoon Lee, Jae Pil Jeong
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Patent number: 8320330Abstract: There is provided a method of switching a zone through which services are provided to subscriber stations (SS) in an environment using an FRF-1 zone and an FRF-3 zone based on traffic load of each zone in order to reduce the inter-cell interference in 802.16/WiBro systems. The service zone switching method based on load considering inter-cell interference in 802.Type: GrantFiled: May 6, 2009Date of Patent: November 27, 2012Assignees: Postech Academy-Industry Foundation, Posco, Posdata Co., Ltd., Posco Research AssociationInventors: Joo-Young Baek, Sok-Hyong Kim, Young-Joo Suh, Jeong-Yoon Lee
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Patent number: 8159946Abstract: Provided is a resource management method in a communication system, and more particularly, a resource management method based on priority in a wireless communication system. The resource management method in a wireless management network includes: setting a priority factor value with regard to a link flow for which link establishment is requested; and if a capacity required by the flow for which link establishment is requested exceeds a remaining capacity of a base station, increasing the remaining capacity of the base station by sequentially reducing a minimum reserved rate (MRR) value of flows that receive a service at a lower priority than the flow for which link establishment is requested to a maximum sustained rate (MSR) value, until the remaining capacity required by the flow for which link establishment is requested is generated.Type: GrantFiled: July 31, 2008Date of Patent: April 17, 2012Assignees: Postech Academy-Industry Foundation, PoscoInventors: Joo-Young Baek, Min-Kon Kwak, Dong-Hee Kwon, Young Joo Suh
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Patent number: 8155080Abstract: A heterogeneous network system performs a vertical handover based on media independent handover (MIH) in different networks in which a WiMAX (Wireless Broadband Internet) network (or a WiBro (Wireless Broadband Internet)) and a WLAN (Wireless LAN) network are coexisted. The heterogeneous network system cyclically acquires neighboring network information in advance through a media independent handover server, and performs new address (NCoA) generation at a handover preliminary time. And then DAD (Duplicate Address Detection) and BU (Binding Update) are performed. Accordingly, the vertical handover between different networks can be performed to receive packets from a switched network while a handover delay time is minimized.Type: GrantFiled: April 17, 2008Date of Patent: April 10, 2012Assignee: Postech Academy-Industry FoundationInventors: Wan Seon Lim, Joo Young Baek, Woo Jae Kim, Young Joo Suh
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Patent number: 8139484Abstract: Provided is a traffic class of an IEEE 802.16/WiBro system. The unsolicited grant service (UGS) scheduling method with regard to a subscriber station (SS) and a base station (BS) that are disposed in a network wherein an IEEE 802.16/WiBro system is realized, the method includes: when the SS requires 1 through M (where M is a positive integer) UGS flows, and the BS serves 1 through N (where N is a positive integer) frames, the BS storing grant periods and guaranteed sizes that are granted to the M UGS flows in each N frame; and the BS comparing service capacity of a frame and a sum of guaranteed sizes of each flow belonging to the N frames, and determining if an overload occurs.Type: GrantFiled: August 28, 2008Date of Patent: March 20, 2012Assignees: Postech Academy-Industry Foundation, PoscoInventors: Joo-Young Baek, Min-Kon Kwak, Dong-Hee Kwon, Young Joo Suh
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Publication number: 20090279505Abstract: There is provided a method of switching a zone through which services are provided to subscriber stations (SS) in an environment using an FRF-1 zone and an FRF-3 zone based on traffic load of each zone in order to reduce the inter-cell interference in 802.16/WiBro systems. The service zone switching method based on load considering inter-cell interference in 802.Type: ApplicationFiled: May 6, 2009Publication date: November 12, 2009Applicants: Postech Academy-Industry Foundation, Posco, Posdata Co., Ltd., Posco Research AssociationInventors: Joo-Young BAEK, Sok-Hyong KIM, Young-Joo SUH, Jeong-Yoon LEE
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Publication number: 20090109930Abstract: A method is related to support a QoS service at a handed over network in heterogeneous networks. A serving network requests the mobile terminal to offer demand QoS information, when there is a need of handover. The mobile terminal sends a response message containing the demand QoS information to the serving network, and each candidate network maps the demand QoS information to its network resources to judge whether or not to support the QoS service. And the serving network determines one of the candidate networks that can support the QoS service depending on the judgment of the candidate networks, and provides information on the determined candidate network to the mobile terminal such that the mobile terminal is handed over to the determined candidate network.Type: ApplicationFiled: October 29, 2008Publication date: April 30, 2009Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATIONInventors: Young Joo Suh, Deok Jin Kim, Wan Seon Lim, Joo Young Baek
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Publication number: 20090059889Abstract: Provided is a real-time polling service (rtPS) class of an IEEE 802.16/WiBro system. An rtPS scheduling method of the IEEE 802.16/WiBro system includes subscriber station (SS) located in a network where the IEEE 802.16/WiBro system is realized inserting a timestamp indicating time information when uplink data is transmitted from an application layer of the SS into the uplink data; and after the SS receives polling from a base station (BS), comparing the timestamp inserted into the uplink data and a current time, and, if a difference between the timestamp and the current time is greater than a predetermined period of time, firstly dropping the uplink data.Type: ApplicationFiled: August 28, 2008Publication date: March 5, 2009Applicants: POSTECH ACADEMY-INDUSTRY FOUNDATION, POSDATA CO., LTD., POSCO RESEARCH ASSOCIATION, POSCOInventors: Joo-Young Baek, Min-Kon Kwak, Dong-Hee Kwon, Young Joo Suh
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Publication number: 20090059847Abstract: Provided is a traffic class of an IEEE 802.16/WiBro system. The unsolicited grant service (UGS) scheduling method with regard to a subscriber station (SS) and a base station (BS) that are disposed in a network wherein an IEEE 802.16/WiBro system is realized, the method includes: when the SS requires 1 through M (where M is a positive integer) UGS flows, and the BS serves 1 through N (where N is a positive integer) frames, the BS storing grant periods and guaranteed sizes that are granted to the M UGS flows in each N frame; and the BS comparing service capacity of a frame and a sum of guaranteed sizes of each flow belonging to the N frames, and determining if an overload occurs.Type: ApplicationFiled: August 28, 2008Publication date: March 5, 2009Applicants: POSTECH ACADEMY-INDUSTRY FOUNDATION, POSDATA CO., LTD., POSCO RESEARCH ASSOCIATION, POSCOInventors: Joo-Young Baek, Min-Kon Kwak, Dong-Hee Kwon, Young Joo Suh
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Publication number: 20090063692Abstract: Provided is a bidirectional service flow management method in a wideband wireless connection communication system, and more particularly, a method of performing a bidirectional flow establishment. The method of providing a flow service in an IEEE 802.16/WiBro includes: generating a revised dynamic service addition (DSA) related message in which an area for designating bidirectional flow management information is allocated from a standard DSA related message; and performing a bidirectional flow initialization process between a subscriber station (SS) and a base station (BS) via single control message negotiation based on the revised DSA related message.Type: ApplicationFiled: August 28, 2008Publication date: March 5, 2009Applicants: POSTECH ACADEMY-INDUSTRY FOUNDATION, POSDATA CO., LTD., POSCO RESEARCH ASSOCIATION, POSCOInventors: Joo-Young Baek, Min-Kon Kwak, Dong-Hee Kwon, Young Joo Suh
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Publication number: 20090034464Abstract: Provided is a resource management method in a communication system, and more particularly, a resource management method based on priority in a wireless communication system. The resource management method in a wireless management network includes: setting a priority factor value with regard to a link flow for which link establishment is requested; and if a capacity required by the flow for which link establishment is requested exceeds a remaining capacity of a base station, increasing the remaining capacity of the base station by sequentially reducing a minimum reserved rate (MRR) value of flows that receive a service at a lower priority than the flow for which link establishment is requested to a maximum sustained rate (MSR) value, until the remaining capacity required by the flow for which link establishment is requested is generated.Type: ApplicationFiled: July 31, 2008Publication date: February 5, 2009Applicants: POSTECH ACADEMY-INDUSTRY FOUNDATION, POSDATA CO., LTD, POSCO RESEARCH ASSOCIATION, POSCOInventors: Joo-Young Baek, Min-Kon Kwak, Dong-Hee Kwon, Young Joo Suh
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Publication number: 20080259872Abstract: A heterogeneous network system performs a vertical handover based on media independent handover (MIH) in different networks in which a WiMAX (Wireless Broadband Internet) network (or a WiBro (Wireless Broadband Internet)) and a WLAN (Wireless LAN) network are coexisted. The heterogeneous network system cyclically acquires neighboring network information in advance through a media independent handover server, and performs new address (NCoA) generation at a handover preliminary time. And then DAD (Duplicate Address Detection) and BU (Binding Update) are performed. Accordingly, the vertical handover between different networks can be performed to receive packets from a switched network while a handover delay time is minimized.Type: ApplicationFiled: April 17, 2008Publication date: October 23, 2008Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATIONInventors: Wan Seon Lim, Joo Young Baek, Woo Jae Kim, Young Joo Suh
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Publication number: 20080259871Abstract: A method of performing a vertical handover between different wireless networks based on media independent handover (MIH) includes the steps of checking a link state of the first network to transmit a handover notify message from the mobile node to an old access router when a handover is needed, and transmitting a handover request message from the old access router to a new access router to form a tunnel to exit toward the old access router. Thereafter, packets to be transmitted to the mobile node through the first network are buffered in the old access router. After changing the wireless service from the first network to the second network the mobile node, the packets buffered in the old access router is then transmitted to the new access router, and the mobile node receives the packets through the second network.Type: ApplicationFiled: April 17, 2008Publication date: October 23, 2008Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATIONInventors: Joo Young Baek, Wan Seon Lim, Woo Jae Kim, Young Joo Suh