Patents by Inventor William C. Y. Lee
William C. Y. 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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Publication number: 20140192776Abstract: 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: ApplicationFiled: March 10, 2014Publication date: July 10, 2014Applicant: Cellco PartnershipInventors: Jau Young Lee, Ce Xu, William C. Y. Lee
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Patent number: 7929969Abstract: Various types of information from a wireless communications network, including E911 location information, Hand Off (HO) information, and Power information, as well as other Measurements and System Parameters, are collected and analyzed by a Data Collection and Filtering system, and the results of this analysis are provided to a Network Control system to dynamically control the operation of the wireless communications network. The various optimizations that can be performed by the Network Control system include: (1) dynamically allocating radio frequency (RF) signal power, (2) setting dynamic dedicated handoff (HO) thresholds for individual mobile transceivers; and (3) intelligently forming or steering radio frequency (RF) signal beams.Type: GrantFiled: December 9, 2009Date of Patent: April 19, 2011Assignee: Cello PartnershipInventors: William C. Y. Lee, Jau Young Lee
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Publication number: 20100317362Abstract: Various types of information from a wireless communications network, including E911 location information, Hand Off (HO) information, and Power information, as well as other Measurements and System Parameters, are collected and analyzed by a Data Collection and Filtering system, and the results of this analysis are provided to a Network Control system to dynamically control the operation of the wireless communications network. The various optimizations that can be performed by the Network Control system include: (1) dynamically allocating radio frequency (RF) signal power, (2) setting dynamic dedicated handoff (HO) thresholds for individual mobile transceivers; and (3) intelligently forming or steering radio frequency (RF) signal beams.Type: ApplicationFiled: December 9, 2009Publication date: December 16, 2010Applicant: Cellco PartnershipInventors: William C.Y. Lee, Jau Young Lee
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Patent number: 7664492Abstract: A and collects provides various types of information therefrom, including E911 location information, Hand Off (HO) information, and Power information, as well as other Measurements and System Parameters. This information is analyzed by a Data Collection and Filtering system and the results of this analysis are provided to a Network Control system to dynamically control the operation of the wireless network. The various optimizations that can be achieved include: (1) dynamically allocating radio frequency (RF) signal power in the wireless network, (2) setting dynamic dedicated handoff (HO) thresholds for individual mobile transceivers; and (3) intelligently forming or steering radio frequency (RF) signal beams. Moreover, the collected and analyzed information can be used to identify and resolve problems in the wireless network, especially when the identified problems are correlating with E911 location information.Type: GrantFiled: July 26, 2000Date of Patent: February 16, 2010Assignee: Cellco PartnershipInventors: William C. Y. Lee, Jau Young Lee
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Patent number: 7307958Abstract: Vocoding conversions are reduced by dynamically loading a software-defined vocoder into a handset. The software-defined vocoder may be selected based on the calling party's network type, wherein a notification of network type is transmitted to the called party's network during call setup. The software-defined vocoders may be stored in the network and downloaded into the handset; alternatively, the software-defined vocoders may be stored in the handset. Voice data is tunneled from the calling party's handset and the calling party's network, through any number of different networks, to the called party's network and called party's handset, without any vocoding conversions, except at the handsets.Type: GrantFiled: December 7, 2000Date of Patent: December 11, 2007Assignee: Cello PartnershipInventors: William C. Y. Lee, Jau Young Lee
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Patent number: 7170866Abstract: Various techniques ate present for enhancing the quality of service on wireless communications systems. These techniques determine when errors occur in transmitted frames, then apply Bit Error Rate Power Control, Power-Based Re-Transmission, and Sub-Frame Selective Repeat methods to these errors. Consequently, the handling of frame errors consumes fewer resources in the wireless communications systems.Type: GrantFiled: December 7, 2000Date of Patent: January 30, 2007Assignee: Cello PartnershipInventors: William C. Y. Lee, Jau Young Lee
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Patent number: 6909705Abstract: Bluetooth networks, also known as wireless local loop, are integrated with cellular networks, so that the two networks can inter-operate with devices enabled for both types of networks.Type: GrantFiled: November 2, 2000Date of Patent: June 21, 2005Assignee: Cello PartnershipInventors: William C. Y. Lee, Jau Young Lee
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Patent number: 6751207Abstract: A method for tunneling voice over the Internet Protocol (IP) in a cellular network. A Mobile Identification Number (MIN) of a non-IP-enabled handset is mapped to the IP address of a component of a cellular network in communication with that handset. A sub-index is assigned to the handset by the component, wherein the sub-index acts as an extension to the IP Address of the component, so that a non-IP-enabled handset can be correctly identified within the cellular network.Type: GrantFiled: July 21, 2000Date of Patent: June 15, 2004Assignee: Cellco PartnershipInventors: Jau Young Lee, William C. Y. Lee
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Patent number: 6748216Abstract: A method and apparatus for controlling communications between a mobile cellular telephone and a cell of a cellular telephone network. The apparatus comprises a serving transceiver for transmitting and receiving communications between the cell and the mobile cellular telephone, a scanner, coupled to an antenna, for selectably scanning the communication channels to measure a characteristic of the signal transmitted from the mobile telephone, and a controller, coupled to the scanner and the serving transceiver, for commanding the antenna based on the measured signal characteristic.Type: GrantFiled: November 14, 2000Date of Patent: June 8, 2004Assignee: Cellco PartnershipInventor: William C. Y. Lee
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Publication number: 20020087292Abstract: A computer-implemented modeling tool for wireless communications systems predicts signal strength by considering the effects of water on RF signals. The modeling tool creates a model of the RF signals' propagation between a transmitter and a receiver in the wireless communications system. The modeling tool then determines the effect of at least one body of water located between the transmitter and the receiver on the modeled RF signal's propagation. Thereafter, the modeling tool outputs a signal strength value for the modeled RF signal based on the determined effect from the body of water located between the transmitter and receiver.Type: ApplicationFiled: December 29, 2000Publication date: July 4, 2002Inventors: William C.Y. Lee, Jau Young Lee
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Publication number: 20020071396Abstract: Vocoding conversions are reduced by dynamically loading a software-defined vocoder into a handset. The software-defined vocoder may be selected based on the calling party's network type, wherein a notification of network type is transmitted to the called party's network during call setup. The software-defined vocoders may be stored in the network and downloaded into the handset; alternatively, the software-defined vocoders may be stored in the handset. Voice data is tunneled from the calling party's handset and the calling party's network, through any number of different networks, to the called party's network and called party's handset, without any vocoding conversions, except at the handsets.Type: ApplicationFiled: December 7, 2000Publication date: June 13, 2002Inventors: William C.Y. Lee, Jau Young Lee
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Publication number: 20010030955Abstract: Various techniques ate present for enhancing the quality of service on wireless communications systems. These techniques determine when errors occur in transmitted frames, then apply Bit Error Rate Power Control, Power-Based Re-Transmission, and Sub-Frame Selective Repeat methods to these errors. Consequently, the handling of frame errors consumes fewer resources in the wireless communications systems.Type: ApplicationFiled: December 7, 2000Publication date: October 18, 2001Inventors: William C.Y. Lee, Jau Young Lee
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Publication number: 20010003096Abstract: 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: ApplicationFiled: December 5, 2000Publication date: June 7, 2001Inventor: William C.Y. Lee
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Patent number: 6198925Abstract: A method and apparatus for apparatus for controlling communications between a mobile cellular telephone and a cell of a cellular telephone network. The apparatus comprises a serving transceiver for transmitting and receiving communications between the cell and the mobile cellular telephone, a scanner, coupled to an antenna, for selectably scanning the communication channels to measure a characteristic of the signal transmitted from the mobile telephone, and a controller, coupled to the scanner and the serving transceiver, for commanding the antenna based on the measured signal characteristic.Type: GrantFiled: August 19, 1997Date of Patent: March 6, 2001Assignee: Cellco PartnershipInventor: William C. Y. Lee
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Patent number: 5678186Abstract: 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: February 28, 1996Date of Patent: October 14, 1997Assignee: AirTouch Communications, Inc.Inventor: William C. Y. Lee
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Patent number: 5507020Abstract: A communications system is disclosed for spectrum sharing of a microwave point-to-point system and a PCS system. The invention comprises a microwave communications system. This system includes a transmitter for transmitting a first signal and a second signal. The first signal and the second signal are oppositely circularly polarized electromagnetic waves within a predefined frequency range. The system also includes a receiver for receiving the first and second signals. In the preferred embodiment of the present invention the receiver may further include a first microwave receiver for receiving the first signal. It would then include a second receiver for receiving the second signal. The receiver would also include signal combining circuitry for combining the first signal and the second signal to generate a composite signal. It would then include a signal comparator to generate a comparison signal by comparing the average value of the amplitude of the composite signal with a predetermined value.Type: GrantFiled: October 19, 1994Date of Patent: April 9, 1996Assignee: AirTouch Communications of CaliforniaInventor: William C. Y. Lee
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Patent number: 5479397Abstract: 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: October 27, 1994Date of Patent: December 26, 1995Assignee: AirTouch Communications of CaliforniaInventor: William C. Y. Lee
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Patent number: 5220680Abstract: This invention is a multiple-frequency signal generator apparatus and method primarily for simulating a cell site interference environment for electromagnetic communications systems. The generator can produce a plurality of frequencies having a frequency-spacing of d cycles per second. The invention comprises a single frequency multiplier, at least three oscillators and two mixers for providing a multitude of frequencies closely spaced about a carrier frequency. The simple design and components avoid complexity and save costs.Type: GrantFiled: January 15, 1991Date of Patent: June 15, 1993Assignee: PacTel CorporationInventor: William C. Y. Lee
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Patent number: 5081703Abstract: A mobile communications system uses a communications satellite and a Mobile Telephone Switching Office (MTSO) and communicates with mobile units via the satellite. A cell site has a co-located cell site converter which converts satellite signals to signals for the MTSO and vice-versa. Remote converter sites communicate with the satellite and with the mobile units in given geographical areas. A single satellite link is sufficient for adequate RSA service. Frequency and phase differences among signals from the remote sites to the satellite are synchronized to avoid frequency- and phase-drift.Type: GrantFiled: June 27, 1990Date of Patent: January 14, 1992Assignee: Pactel CorporationInventor: William C. Y. Lee