Patents by Inventor Ki Hyun Joo
Ki Hyun Joo 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: 7965685Abstract: A wireless office communication system including a wireless internet base station (WIBS) encompassing a base station controller, a mobile switch controller and an ethernet interface module for coupling the WIBS to an existing internet protocol (IP) based network. A wireless office communication system can also be based on the conventional architecture comprising the BTS, BSC and MSC. The WIBS or BTS is attached to a number of antennas via different and identifiable delay elements for the purpose of determining the serving antennas of mobile communication units. A location determination logic enables the system to handle handoffs between a WIBS or BTS and the external public communication system in an optimum manner.Type: GrantFiled: April 18, 2005Date of Patent: June 21, 2011Assignee: Cisco Technology, Inc.Inventors: Ki Hyun Joo, Peter S. Rha, Chol Su Kang, Sang Kyoon Hyun
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Patent number: 7483410Abstract: A wireless office communication system including a multi-protocol wireless internet base station (WIBS) encompassing a base station controller, a mobile switch controller and an ethernet interface module for coupling the WIBS to an existing internet protocol (IP) based network. The interface module provides for coupling the WIBS to an ethernet back-bone, a mobile communication unit and a public switch telephone network (PSTN). In one embodiment of the invention, a maintenance and operation server is coupled to the ethernet back-bone to allow a technician to remotely call into the enterprise system from a mobile system such as a lap-top computer or a personal digital assistant (PDA) to perform typical system operations and maintenance functions via the internet.Type: GrantFiled: December 20, 2005Date of Patent: January 27, 2009Assignee: Cisco Technology, Inc.Inventors: Ki-Hyun Joo, Chol Su Kang, Jay Wu Hong, Choi Young, II
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Patent number: 7154870Abstract: A wireless office communication system including a wireless internet base station (WIBS) encompassing a base station controller (BSC), a mobile switch controller (MSC), and an ethernet interface module for coupling the wireless internet base station (WIBS) to an existing internet protocol (IP) based network. A wireless office communication system can also be based on the conventional architecture comprising the base station transceiver subsystem BTS, BSC, and MSC. The WIBS or BTS is attached to a number of antennas via different and identifiable delay elements for the purpose of determining the serving antennas of mobile communication units. A location determination logic enables the system to handle handoffs between a WIBS or BTS and the external public communication system in an optimum manner.Type: GrantFiled: August 5, 2005Date of Patent: December 26, 2006Assignee: Cisco Technology, Inc.Inventors: Ki Hyun Joo, Peter S. Rha, Chol Su Kang, Sang Kyoon Hyun
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Patent number: 7120133Abstract: A wireless office communication system including a multi-protocol wireless internet base station (WIBS) encompassing a base station controller (BSC), a mobile switch controller (MSC) and an ethernet interface module for coupling the WIBS to an existing internet protocol (IP) based network. The interface module provides for coupling the WIBS to an ethernet back-bone, a mobile communication unit and a public switch telephone network (PSTN). In one embodiment the wireless communication system includes wireless signaling logic and media gateway logic to enable the wireless office communication system to handle signal transmission between a mobile terminal and a media gateway. A virtual circuit identity code (VCIC) enables the base station to provide a virtual traffic path (VTP) to link communications between TIA/EIA-634 wireless signaling and media gateway control protocol (MGCP).Type: GrantFiled: November 3, 2000Date of Patent: October 10, 2006Assignee: Cisco Technology, Inc.Inventors: Ki-Hyun Joo, Chol Su Kang, Sung Goo Shim, Jay Wu Hong
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Patent number: 7046652Abstract: A wireless office communication system including a multi-protocol, multi-sector wireless internet base station (WIBS) encompassing a base station controller, a mobile switch controller and an Ethernet interface module for coupling the WIBS to an existing internet protocol (IP) based network. The interface module provides for coupling the WIBS to an Ethernet back-bone, a mobile communication unit and a public switch telephone network (PSTN). In one embodiment of the invention, stackable base modules including a transceiver, channel elements and an Ethernet interface unit are integrated in a base station to provide scalability of an enterprise wireless network.Type: GrantFiled: January 9, 2001Date of Patent: May 16, 2006Assignee: Cisco Technology, Inc.Inventors: SangKyoon Hyun, Ki-Hyun Joo, Chol Su Kang
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Patent number: 7016331Abstract: A wireless office communication system including a wireless internet base station (WIBS) encompassing a base station controller (BSC), a mobile switch controller (MSC), and an ethernet interface module for coupling the wireless internet base station (WIBS) to an existing internet protocol (IP) based network. A wireless office communication system can also be based on the conventional architecture comprising the base station transceiver subsystem BTS, BSC, and MSC. The WIBS or BTS is attached to a number of antennas via different and identifiable delay elements for the purpose of determining the serving antennas of mobile communication units. A location determination logic enables the system to handle handoffs between a WIBS or BTS and the external public communication system in an optimum manner.Type: GrantFiled: September 5, 2000Date of Patent: March 21, 2006Assignee: Cisco Technology, Inc.Inventors: Ki Hyun Joo, Peter S. Rha, Chol Su Kang, Sang Kyoon Hyun
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Patent number: 7006479Abstract: A wireless office communication system including a multi-protocol wireless internet base station (WIBS) encompassing a base station controller, a mobile switch controller and an ethernet interface module for coupling the WIBS to an existing internet protocol (IP) based network. The interface module provides for coupling the WIBS to an ethernet back-bone, a mobile communication unit and a public switch telephone network (PSTN). In one embodiment of the invention, a maintenance and operation server is coupled to the ethernet back-bone to allow a technician to remotely call into the enterprise system from a mobile system such as a lap-top computer or a personal digital assistant (PDA) to perform typical system operations and maintenance functions via the internet.Type: GrantFiled: November 28, 2000Date of Patent: February 28, 2006Assignee: Cisco Technology, Inc.Inventors: Ki-Hyun Joo, Chol Su Kang, Jay Wu Hong, Choi Young, II
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Patent number: 6967938Abstract: A wireless office communication system including a wireless internet base station (WIBS) encompassing a base station controller, a mobile switch controller, and an ethernet interface module for coupling the WIBS to an existing internet protocol (IP) based network. The interface module provides for coupling the WIBS to an ethernet back-bone, a mobile communication unit and a public switch telephone network (PSTN). In one embodiment, the wireless communication system includes a wireless internet server which also encompasses base station controller and mobile switch controller functions to enable the wireless communication system to manage call mobility with the system. In one embodiment, communication between the WIBS and the PSTN is in an IP data protocol format. The WIBs provides control and sequencing of all call control operations by handling both voice and data calls which are transmitted over the ethernet back-bone to the PSN or the internet.Type: GrantFiled: April 25, 2000Date of Patent: November 22, 2005Assignee: Cisco Technology, Inc.Inventors: Chol Su Kang, Sang Kyoon Hyun, Ki Hyun Joo
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Patent number: 6901061Abstract: A wireless office communication system including a wireless internet base station (WIBS) encompassing a base station controller, a mobile switch controller and an ethernet interface module for coupling the WIBS to an existing internet protocol (IP) based network. A wireless office communication system can also be based on the conventional architecture comprising the BTS, BSC and MSC. The WIBS or BTS is attached to a number of antennas via different and identifiable delay elements for the purpose of determining the serving antennas of mobile communication units. A location determination logic enables the system to handle handoffs between a WIBS or BTS and the external public communication system in an optimum manner.Type: GrantFiled: September 5, 2000Date of Patent: May 31, 2005Assignee: Cisco Technology, Inc.Inventors: Ki Hyun Joo, Peter S. Rha, Chol Su Kang, Sang Kyoon Hyun
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Publication number: 20020089951Abstract: A wireless office communication system including a multi-protocol, multi-sector wireless internet base station (WIBS) encompassing a base station controller, a mobile switch controller and an Ethernet interface module for coupling the WIBS to an existing internet protocol (IP) based network. The interface module provides for coupling the WIBS to an Ethernet back-bone, a mobile communication unit and a public switch telephone network (PSTN). In one embodiment of the invention, stackable base modules including a transceiver, channel elements and an Ethernet interface unit are integrated in a base station to provide scalability of an enterprise wireless network.Type: ApplicationFiled: January 9, 2001Publication date: July 11, 2002Inventors: SangKyoon Hyun, Ki-Hyun Joo, Chol Su Kang