Patents by Inventor William Chien-Yeh Lee
William Chien-Yeh 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).
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Patent number: 8670405Abstract: The present invention provides a method and apparatus for network access for consumers in both wired and wireless environments. Multiple-interface/multiple-connections are used to support high-speed handoff and seamless roaming between different networks (wired and wireless). The present invention is implemented by using multiple interfaces and connections to interface a mobile PC unit, providing additional functions, and enhancing current PC device drivers and software.Type: GrantFiled: June 8, 2000Date of Patent: March 11, 2014Assignee: Cellco PartnershipInventors: Jau Young Lee, Ce Xu, William Chien-Yeh Lee
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Patent number: 7606189Abstract: Integration of the cellular network with an IP based network is disclosed. An integrated IP/cellular network can route packetized voice and data together in a more efficient manner. The present invention integrates IP based standards for a cellular IP solution with cellular centric vs. IP message gateway as the demarcation point. However, the present invention also provides support for cellular unique features for better performance. Multiple architectures are proposed to ease migration to a combined network as well as to show the various levels of support provided.Type: GrantFiled: June 8, 2000Date of Patent: October 20, 2009Assignee: Cellco PartnershipInventors: David Jau Young Lee, Ce Xu, William Chien-Yeh Lee
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Patent number: 6584081Abstract: The invention describes method and apparatus for reducing intermodulation interference caused by reception of undesired signals in wireless receivers. The apparatus comprises an antenna for receiving the desired signal, a low noise amplifier for amplifying this signal, an adjustable attenuator, and a transmitting antenna to transmit the amplified signal to the wireless receiver. By increasing the strength of the desired signal, the present invention eliminates intermodulation distortion caused by the undesirable signals. The invention also describes an apparatus further comprising an adjustable filter for limiting the spectral content of the transmitted amplified signal, and an apparatus for selecting the characteristics of the adjustable filter in accordance with the measured characteristics of the desired and undesired signals.Type: GrantFiled: August 19, 1999Date of Patent: June 24, 2003Assignee: Cellco PartnershipInventors: William Chien-Yeh Lee, F. Craig Farrill
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Patent number: 6434406Abstract: A cellular telephone system is described of the type wherein a plurality of contiguous cells, each having an assigned set of identification codes, are arranged with means for maintaining continuous communication with mobile telephones moving from cell to cell. The system allows multiple access by including means for assigning at least one of the in the assigned set of identification codes to more than one mobile telephone. A unique identification code is assigned to a mobile telephone located in the cell. A signal having a unique identification code is generated for identifying the mobile telephone. The signal is coupled to the zones. A combiner is also provided for combining signals from all of the zones in the cell. A receiver is coupled to the combiner for retrieving the signals having the code.Type: GrantFiled: December 5, 2000Date of Patent: August 13, 2002Assignee: Cellco PartnershipInventor: William Chien-Yeh Lee
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Patent number: 6338031Abstract: A computer-implemented modeling tool for cellular telephone systems predicts signal strength under real conditions within a building, by considering the effects of inter-building and intra-building structures on transmitted signals. The modeling tool gives more accurate predictions under line of sight conditions, when obstructions occur due to inter-building and intra-building structures.Type: GrantFiled: September 23, 1999Date of Patent: January 8, 2002Assignee: Cellco PartnershipInventors: William Chien-Yeh Lee, Jau Young Lee
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Patent number: 6195567Abstract: A cellular telephone system is described of the type wherein a plurality of contiguous cells, each having an assigned set of identification codes, are arranged with means for maintaining continuous communication with mobile telephones moving from cell to cell. The system allows multiple access by including means for assigning at least one of the in the assigned set of identification codes to more than one mobile telephone. A unique identification code is assigned to a mobile telephone located in the cell. A signal having a unique identification code is generated for identifying the mobile telephone. The signal is coupled to the zones. A combiner is also provided for combining signals from all of the zones in the cell. A receiver is coupled to the combiner for retrieving the signals having the code.Type: GrantFiled: January 6, 1999Date of Patent: February 27, 2001Assignee: Cellco PartnershipInventor: William Chien-Yeh Lee
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Patent number: 6088522Abstract: A computer-implemented modeling tool for cellular telephone systems predicts signal strength under real conditions within a building, by considering the effects of inter-building and intra-building structures on transmitted signals. The modeling tool gives more accurate predictions under line of sight conditions, when obstructions occur due to inter-building and intra-building structures.Type: GrantFiled: July 31, 1997Date of Patent: July 11, 2000Assignee: AirTouch Communications, Inc.Inventors: William Chien-Yeh Lee, Jau Young Lee
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Patent number: 6032105Abstract: A computer-implemented modeling tool for cellular telephone systems predicts signal strength under real conditions by considering the effects of terrain and man-made structures on transmitted signals. The modeling tool gives more accurate predictions under line of sight conditions, when obstructions occur due to terrain contours, and when mobile or transmitter antennas are blocked by buildings or other structures.Type: GrantFiled: July 31, 1997Date of Patent: February 29, 2000Assignee: AirTouch Communications, Inc.Inventors: William Chien-Yeh Lee, Jau Young Lee
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Patent number: 5983118Abstract: A cellular telephone system is described of the type wherein a plurality of contiguous cells, each having an assigned set of identification codes, are arranged with means for maintaining continuous communication with mobile telephones moving from cell to cell. The system allows multiple access by including means for assigning at least one of the in the assigned set of identification codes to more than one mobile telephone. A unique identification code is assigned to a mobile telephone located in the cell. A signal having a unique identification code is generated for identifying the mobile telephone. The signal is coupled to the zones. A combiner is also provided for combining signals from all of the zones in the cell. A receiver is coupled to the combiner for retrieving the signals having the code.Type: GrantFiled: June 12, 1997Date of Patent: November 9, 1999Assignee: AirTouch Communications, Inc.Inventor: William Chien-Yeh Lee
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Patent number: 5978362Abstract: The invention describes method and apparatus for reducing intermodulation interference caused by reception of undesired signals in wireless receivers. The apparatus comprises an antenna for receiving the desired signal, a low noise amplifier for amplifying this signal, an adjustable attenuator, and a transmitting antenna to transmit the amplified signal to the wireless receiver. By increasing the strength of the desired signal, the present invention eliminates intermodulation distortion caused by the undesirable signals. The invention also describes an apparatus further comprising an adjustable filter for limiting the spectral content of the transmitted amplified signal, and an apparatus for selecting the characteristics of the adjustable filter in accordance with the measured characteristics of the desired and undesired signals.Type: GrantFiled: December 3, 1996Date of Patent: November 2, 1999Assignee: AirTouch Communications, Inc.Inventors: William Chien-Yeh Lee, F. Craig Farrill
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Patent number: 5974328Abstract: A mobile radio telephone communication systems provides for rapid system access and registration of mobile phones when the mobile phone operates in an area outside of its home service area. A preferred mobile phone system for a mobile phone is identified before the mobile phone originates a call by determining a location for the mobile phone and selecting the preferred system from a database stored in the mobile phone using the determined location.Type: GrantFiled: September 17, 1997Date of Patent: October 26, 1999Assignee: AirTouch Communications, Inc.Inventors: William Chien-Yeh Lee, F. Craig Farrill
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Patent number: 5812522Abstract: An integrated radio frequency communication system, known as a Location-Ruled Radio-Integrated Network (LORRAINE) system, provides integrated voice, data and location services. The radio frequency communications system combines time division multiplexing (TDM) techniques with optional time division duplexing (TDD) or frequency division duplexing (FDD) techniques to provide a plurality of time slot channels for these services. Spread spectrum techniques help reduce noise and interference in the system.Type: GrantFiled: March 31, 1995Date of Patent: September 22, 1998Assignee: AirTouch Communications, Inc.Inventors: William Chien-Yeh Lee, F. Craig Farrill
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Patent number: 5758287Abstract: The present invention discloses a hub and remote cellular system having RF generating equipment located at a centralized hub, and RF front end equipment located at each of a plurality of remote omni-directional cell sites. The centralized hub distributes channels for the remote cell sites. The hub and remote structure provides for the efficient allocation of resources to a plurality of cell sites, lowers equipment costs, real estate costs, regulatory costs, and maintenance costs.Type: GrantFiled: August 29, 1996Date of Patent: May 26, 1998Assignee: AirTouch Communications, Inc.Inventors: William Chien-Yeh Lee, David Anthony Pasquel, Ronald S. Rudokas
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Patent number: 5193109Abstract: A zoned microcell system with sector scanning for cellular telephone systems has a plurality of contiguous cells, each having a different assigned set of transmission frequency channels, arranged with handoff means for maintaining continuous communication with mobile telephones moving from cell to cell. The system includes at least one cell having a plurality of transmitting and receiving antenna sets. Each set is positioned at a respective antenna sub-site within the periphery of the cell at a suitable location, and is configured so that propagation and reception of signals is limited to a transmission zone which is substantially within the boundaries of the cell and which is substantially less in area than the cell. Control means monitor the strength of the signal received by each of the antenna sets at each frequency channel in the assigned set.Type: GrantFiled: October 25, 1991Date of Patent: March 9, 1993Assignee: PacTel CorporationInventor: William Chien-Yeh Lee