Patents by Inventor Lance Kazumi Uyehara

Lance Kazumi Uyehara 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: 7801091
    Abstract: A communication system for communication using wireless signals in a fast macrodiversity switching environment. The wireless signals include downlink signals to and uplink signals from mobile stations where the wireless signals have bursts in time slots. In the communication system, a plurality of transceiver stations have broadcast channels (non-switched) and dedicated channels (switched) for the wireless signals. A zone manager controls the fast macrodiversity switching of bursts in dedicated channels among transceiver stations. The fast macrodiversity switching causes the bursts to have time shifts that are of a magnitude to cause unwanted burst overlap. A macro-diversity timing control controls the timing of bursts, to reduce burst overlap, in dedicated channels that have been dynamically switched timing problem.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: September 21, 2010
    Inventors: Gopal Chillariga, Bhupal Kanaiyalal Dharia, Gerhard Albert Koepf, Lance Kazumi Uyehara
  • Patent number: 7724803
    Abstract: A communication system using fast macrodiversity switching (FMS) and frequency hopping (FH) for wireless signals including downlink signals to and uplink signals from mobile stations. Frequency hopping sequences are determined for the uplink and downlink signals for the mobile stations. A plurality of transceiver stations employ broadcast channels and dedicated channels for communications with the mobile stations. A zone manager controls fast macrodiversity switching of dedicated channels among the mobile stations while broadcast channels remain unswitched. The zone manager extracts frequency hopping information to form predictions of dedicated channel collisions, and based upon the predictions, controls the dynamic switching of dedicated channels to avoid collisions.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: May 25, 2010
    Inventors: Naveen Dhar, Lance Kazumi Uyehara, Ujjal Kumar Ghoshtagore, Gerhard Albert Koepf, Jingqing Xiao
  • Patent number: 7643423
    Abstract: Dynamic allocation of communication channels among communication units (CU) in a communications system. Dynamic channel allocation employs a reservation set for reserving channels and an allocation set corresponding to the reservation set for receiving allocated channels. The reservation set and the allocation set are changed dynamically as a function of network parameters to control the dynamic channel operation. Reservation set information is broadcast downlink to multiple users to reserve an allocation set of uplink radio resources for specific ones of the users. The system uses a modification of the packet data channel (PDCH) of a GPRS/EGPRS or EDGE system which employs an Uplink Status Flag (USF) on each PDCH downlink radio block. The downlink reservation set information is commonly received by all users in the group of users. Allocation delay, bandwidth efficiency and other system parameters are optimized.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: January 5, 2010
    Inventors: Gopal Chillariga, Rohit Kaushal, Bhupal Kanaiyalal Dharia, Lance Kazumi Uyehara, Gerhard Albert Koepf, Kevin Dean Raack, Ujjal Kumar Ghoshtagore
  • Patent number: 7613463
    Abstract: Fast macrodiversity switching (FMS) dynamically switches radio links used for traffic and control channels for a mobile station among a number of base transceiver stations (BTS) without changing the radio resource, that is, using the same frequency and time slot combination (TDMA) or frequency and spreading code combination (CDMA). The traffic channel switching is under control of zone managers. Each BTS includes a zone manager where a host BTS has its zone manager designated as a host zone manager and other BTSs (assistant BTSs) have their zone managers designated as assistant zone managers. The control by the host and assistant zone managers includes switching down-link signals to and up-link signals from mobile stations among base transceiver stations which include broadcast channels (non-switched) and dedicated (switched) channels. Measurements of the wireless signals are made at macrodiverse locations.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: November 3, 2009
    Inventors: Bhupal Kanaiyalal Dharia, Gopal Chillariga, Ujjal Kumar Ghoshtagore, Rohit Kaushal, Gerhard Albert Koepf, Lance Kazumi Uyehara
  • Patent number: 7551595
    Abstract: Fast macrodiversity switching (FMS) of channels that employ interleaving. The fast macrodiversity switching dynamically switches radio links used for traffic and control channels for a mobile station among a number of base transceiver stations (BTS) without switching the radio resource, using the same frequency and time slot combination (TDMA) in an environment where interleaving is occurring. The fast macrodiversity switching of channels and interleave processing is under control of an interleave manager which is distributed among zone managers. The control by the host and assistant zone managers includes switching down-link signals to and up-link signals from mobile stations among base transceiver stations which include broadcast channels (non-switched) and dedicated (switched) channels that employ interleaving. The dedicated channels are switched as frequently as a signal switch time which can be the frame rate of the up-link signals.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: June 23, 2009
    Assignee: Northstar Acquisitions, LLC
    Inventors: Bhupal Kanaiyalal Dharia, Gopal Chillariga, Ujjal Kumar Ghoshtagore, Rohit Kaushal, Gerhard Albert Koepf, Lance Kazumi Uyehara
  • Publication number: 20090029713
    Abstract: Fast macrodiversity switching (FMS) dynamically switches radio links used for traffic and control channels for a mobile station among a number of base transceiver stations (BTS) without changing the radio resource, that is, using the same frequency and time slot combination (TDMA) or frequency and spreading code combination (CDMA). The traffic channel switching is under control of zone managers. Each BTS includes a zone manager where a host BTS has its zone manager designated as a host zone manager and other BTSs (assistant BTSs) have their zone managers designated as assistant zone managers. The control by the host and assistant zone managers includes switching down-link signals to and up-link signals from mobile stations among base transceiver stations which include broadcast channels (non-switched) and dedicated (switched) channels. Measurements of the wireless signals are made at macrodiverse locations.
    Type: Application
    Filed: October 3, 2008
    Publication date: January 29, 2009
    Inventors: Bhupal Kanaiyalal Dharia, Gopal Chillariga, Ujjal Kumar Ghoshtagore, Rohit Kaushal, Gerhard Albert Koepf, Lance Kazumi Uyehara
  • Patent number: 7433683
    Abstract: Fast macrodiversity switching (FMS) dynamically switches radio links used for traffic and control channels for a mobile station among a number of base transceiver stations (BTS) without changing the radio resource, that is, using the same frequency and time slot combination (TDMA) or frequency and spreading code combination (CDMA). The traffic channel switching is under control of zone managers. Each BTS includes a zone manager where a host BTS has its zone manager designated as a host zone manager and other BTSs (assistant BTSs) have their zone managers designated as assistant zone managers. The control by the host and assistant zone managers includes switching down-link signals to and up-link signals from mobile stations among base transceiver stations which include broadcast channels (non-switched) and dedicated (switched) channels. Measurements of the wireless signals are made at macrodiverse locations.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: October 7, 2008
    Assignee: Northstar Acquisitions, LLC
    Inventors: Bhupal Kanaiyalal Dharia, Gopal Chillariga, Ujjal Kumar Ghoshtagore, Rohit Kaushal, Gerhard Albert Koepf, Lance Kazumi Uyehara
  • Patent number: 7212515
    Abstract: Fast macrodiversity switching (FMS) of channels that employ interleaving. The fast macrodiversity switching dynamically switches radio links used for traffic and control channels for a mobile station among a number of base transceiver stations (BTS) without switching the radio resource, using the same frequency and time slot combination (TDMA) in an environment where interleaving is occurring. The fast macrodiversity switching of channels and interleave processing is under control of an interleave manager which is distributed among zone managers. The control by the host and assistant zone managers includes switching down-link signals to and up-link signals from mobile stations among base transceiver stations which include broadcast channels (non-switched) and dedicated (switched) channels that employ interleaving. The dedicated channels are switched as frequently as a signal switch time which can be the frame rate of the up-link signals.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: May 1, 2007
    Inventors: Bhupal Kanaiyalal Dharia, Gopal Chillariga, Lance Kazumi Uyehara
  • Patent number: 7177298
    Abstract: Dynamic allocation of communication channels among communication units (CU) in a communications system. Dynamic channel allocation employs a reservation set for reserving channels and an allocation set corresponding to the reservation set for receiving allocated channels. The reservation set and the allocation set are changed dynamically as a function of network parameters to control the dynamic channel operation. Reservation set information is broadcast downlink to multiple users to reserve an allocation set of uplink radio resources for specific ones of the users. The system uses a modification of the packet data channel (PDCH) of a GPRS/EGPRS or EDGE system which employs an Uplink Status Flag (USF) on each PDCH downlink radio block. The downlink reservation set information is commonly received by all users in the group of users. Allocation delay, bandwidth efficiency and other system parameters are optimized.
    Type: Grant
    Filed: January 2, 2001
    Date of Patent: February 13, 2007
    Inventors: Gopal Chillariga, Rohit Kaushal, Bhupal Kanaiyalal Dharia, Lance Kazumi Uyehara, Gerhard Albert Koepf, Kevin Dean Raack, Ujjal Kumar Ghoshtagore
  • Patent number: 7020115
    Abstract: A communication system for communication using wireless signals in a fast macrodiversity switching environment. The wireless signals include downlink signals to and uplink signals from mobile stations where the wireless signals have bursts in time slots. In the communication system, a plurality of transceiver stations have broadcast channels (non-switched) and dedicated channels (switched) for the wireless signals. A zone manager controls the fast macrodiversity switching of bursts in dedicated channels among transceiver stations. The fast macrodiversity switching causes the bursts to have time shifts that are of a magnitude to cause unwanted burst overlap. A macrodiversity timing control controls the timing of bursts, to reduce burst overlap, in dedicated channels that have been dynamically switched timing problem.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: March 28, 2006
    Inventors: Gopal Chillariga, Bhupal Kanaiyalal Dharia, Gerhard Albert Koepf, Lance Kazumi Uyehara
  • Patent number: 6987793
    Abstract: A communication system using fast macrodiversity switching (FMS) and frequency hopping (FH) for wireless signals including downlink signals to and uplink signals from mobile stations. Frequency hopping sequences are determined for the uplink and downlink signals for the mobile stations. A plurality of transceiver stations employ broadcast channels and dedicated channels for communications with the mobile stations. A zone manager controls fast macrodiversity switching of dedicated channels among the mobile stations while broadcast channels remain unswitched. The zone manager extracts frequency hopping information to form predictions of dedicated channel collisions, and based upon the predictions, controls the dynamic switching of dedicated channels to avoid collisions.
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: January 17, 2006
    Inventors: Naveen Dhar, Lance Kazumi Uyehara, Ujjal Kumar Ghoshtagore, Gerhard Albert Koepf, Jingqing Xiao
  • Publication number: 20020123337
    Abstract: Fast macrodiversity switching (FMS) dynamically switches radio links used for traffic and control channels for a mobile station among a number of base transceiver stations (BTS) without changing the radio resource, that is, using the same frequency and time slot combination (TDMA) or frequency and spreading code combination (CDMA). The traffic channel switching is under control of zone managers. Each BTS includes a zone manager where a host BTS has its zone manager designated as a host zone manager and other BTSs (assistant BTSs) have their zone managers designated as assistant zone managers. The control by the host and assistant zone managers includes switching down-link signals to and up-link signals from mobile stations among base transceiver stations which include broadcast channels (non-switched) and dedicated (switched) channels. Measurements of the wireless signals are made at macrodiverse locations.
    Type: Application
    Filed: December 28, 2000
    Publication date: September 5, 2002
    Inventors: Bhupal Kanaiyalal Dharia, Gopal Chillariga, Ujjal Kumar Ghoshtagore, Rohit Kaushal, Gerhard Albert Koepf, Lance Kazumi Uyehara
  • Publication number: 20020122406
    Abstract: A communication system for communication using wireless signals in a fast macrodiversity switching environment. The wireless signals include downlink signals to and uplink signals from mobile stations where the wireless signals have bursts in time slots. In the communication system, a plurality of transceiver stations have broadcast channels (non-switched) and dedicated channels (switched) for the wireless signals. A zone manager controls the fast macrodiversity switching of bursts in dedicated channels among transceiver stations. The fast macrodiversity switching causes the bursts to have time shifts that are of a magnitude to cause unwanted burst overlap. A macrodiversity timing control controls the timing of bursts, to reduce burst overlap, in dedicated channels that have been dynamically switched timing problem.
    Type: Application
    Filed: June 12, 2001
    Publication date: September 5, 2002
    Inventors: Gopal Chillariga, Bhupal Kanaiyalal Dharia, Gerhard Albert Koepf, Lance Kazumi Uyehara
  • Publication number: 20020090938
    Abstract: Fast macrodiversity switching (FMS) of channels that employ interleaving. The fast macrodiversity switching dynamically switches radio links used for traffic and control channels for a mobile station among a number of base transceiver stations (BTS) without switching the radio resource, using the same frequency and time slot combination (TDMA) in an environment where interleaving is occurring. The fast macrodiversity switching of channels and interleave processing is under control of an interleave manager which is distributed among zone managers. The control by the host and assistant zone managers includes switching down-link signals to and up-link signals from mobile stations among base transceiver stations which include broadcast channels (non-switched) and dedicated (switched) channels that employ interleaving. The dedicated channels are switched as frequently as a signal switch time which can be the frame rate of the up-link signals.
    Type: Application
    Filed: April 17, 2001
    Publication date: July 11, 2002
    Inventors: Bhupal Kanaiyalal Dharia, Gopal Chilliariga, Lance Kazumi Uyehara
  • Publication number: 20020085622
    Abstract: A communication system using fast macrodiversity switching (FMS) and frequency hopping (FH) for wireless signals including downlink signals to and uplink signals from mobile stations. Frequency hopping sequences are determined for the uplink and downlink signals for the mobile stations. A plurality of transceiver stations employ broadcast channels and dedicated channels for communications with the mobile stations. A zone manager controls fast macrodiversity switching of dedicated channels among the mobile stations while broadcast channels remain unswitched. The zone manager extracts frequency hopping information to form predictions of dedicated channel collisions, and based upon the predictions, controls the dynamic switching of dedicated channels to avoid collisions.
    Type: Application
    Filed: July 5, 2001
    Publication date: July 4, 2002
    Applicant: mDiversity Inc. a Delaware Corporation
    Inventors: Naveen Dhar, Lance Kazumi Uyehara, Ujjal Kumar Ghoshtagore, Gerhard Albert Koepf, Jingqing Xiao
  • Patent number: 6349094
    Abstract: A communication system having a plurality of forward channel communications and a plurality of corresponding reverse channel communications from and to a plurality of mobile users. A plurality of broadcaster transmitters are distributed at macro-diverse locations for transmitting forward channel signals to the users under control of a broadcaster control unit. A plurality of collectors are distributed at macro-diverse locations for receiving reverse channel signals from the users which are processed to yield one or more sequences of data bits as a burst and corresponding initial confidence metrics for each bit. The collectors forward these reverse channel signals including the data bits and corresponding processed confidence metrics to aggregators. The system includes bandwidth control for minimizing backhaul bandwidth from collector to aggregator while maximizing signal quality.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: February 19, 2002
    Assignee: mDiversity Inc.
    Inventors: John Andrew Vastano, Lance Kazumi Uyehara, Ujjal Kumar Ghoshtagore
  • Publication number: 20010030956
    Abstract: Dynamic allocation of communication channels among communication units (CU) in a communications system. Dynamic channel allocation employs a reservation set for reserving channels and an allocation set corresponding to the reservation set for receiving allocated channels. The reservation set and the allocation set are changed dynamically as a function of network parameters to control the dynamic channel operation. Reservation set information is broadcast downlink to multiple users to reserve an allocation set of uplink radio resources for specific ones of the users. The system uses a modification of the packet data channel (PDCH) of a GPRS/EGPRS or EDGE system which employs an Uplink Status Flag (USF) on each PDCH downlink radio block. The downlink reservation set information is commonly received by all users in the group of users. Allocation delay, bandwidth efficiency and other system parameters are optimized.
    Type: Application
    Filed: January 2, 2001
    Publication date: October 18, 2001
    Inventors: Gopal Chillariga, Rohit Kaushal, Bhupal Kanaiyalal Dharia, Lance Kazumi Uyehara, Gerhard Albert Koepf, Kevin Dean Raack, Ujjal Kumar Ghoshtagore
  • Patent number: 6112058
    Abstract: A communication system having a plurality of forward channel communications and a plurality of corresponding reverse channel communications from and to a plurality of mobile users. A plurality of collectors are distributed at macro-diverse locations for receiving reverse channel signals from the users which are processed to yield one or more sequences of data bits as a burst and corresponding one or more initial confidence metrics for each bit. The initial confidence metrics have an initial range, a.sub.in, represented by an initial number of bits, .gamma..sub.in, and are processed to form processed confidence metrics having a processed range, a.sub.p, represented by a processed number of bits, .gamma..sub.p. The collectors forward these reverse channel signals including the data bits and corresponding processed confidence metrics to aggregators. The aggregators combine the multiple collector signals for the same user received from the macro-diverse collectors.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: August 29, 2000
    Assignee: SC-Wireless Inc.
    Inventors: Andrew John Walters, John Walker Wallerius, John Andrew Vastano, Lance Kazumi Uyehara