Patents by Inventor Jack Holtzman

Jack Holtzman 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: 8068453
    Abstract: A method and apparatus for selecting a favored transmission slot for communicating non-voice data in conjunction with a voice-data communication. The slot, reflecting a favored power level and transmission rate for transmitting the non-voice data on a supplemental channel, is selected based upon the transmission power levels for voice-data transmitted by a base station to a remote station on a fundamental channel. The favored transmission slot is selected without the remote station messaging information to the base station concerning frequency channel or interference information for the supplemental channel.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: November 29, 2011
    Assignee: QUALCOMM Incorporated
    Inventors: Jack Holtzman, Tao Chen
  • Publication number: 20080013494
    Abstract: The invention is a method for limiting the peak transmit power in a CDMA communication system. At least one of first and second high transmit power regions are separated into a plurality of high transmit power subregions. The high transmit power subregions of the plurality of high subregions are shifted by time offsets of differing durations to provide a plurality of time offset subregions. First and second low transmit power regions are also provided. At least one of the first and second low transmit power regions is also separated into a plurality of transmit power subregions and the low transmit power subregions are shifted by time offsets of differing time durations. The subregions can be time offset by a predetermined time duration or by a random time duration.
    Type: Application
    Filed: June 26, 2007
    Publication date: January 17, 2008
    Applicant: QUALCOMM Incorporated
    Inventors: Stein Lundby, Edward Tiedemann, Jack Holtzman, Daisuke Terasawa
  • Publication number: 20060262750
    Abstract: Techniques to partition and allocate the available system resources among cells in a communication system, and to allocate the resources in each cell to terminals for data transmission on the uplink. In one aspect, adaptive reuse schemes are provided wherein the available system resources may be dynamically and/or adaptively partitioned and allocated to the cells based on a number of factors such as the observed interference levels, loading conditions, system requirements, and so on. A reuse plan is initially defined and may be redefined to reflect changes in the system. In another aspect, the system resources may be partitioned such that each cell is allocated a set of channels having different performance levels. In yet another aspect, terminals in each cell are scheduled for data transmission (e.g., based on their priority or load requirements) and assigned channels based on their tolerance to interference and the channels' performance.
    Type: Application
    Filed: May 3, 2006
    Publication date: November 23, 2006
    Inventors: Jay Walton, Mark Wallace, Jack Holtzman, Franklin Antonio
  • Patent number: 7117017
    Abstract: A method and apparatus for wireless communications wherein a base station transmits a signal to sending data to a subscriber station through a signal beam that sweeps through the coverage area of the base station. User data addressed to the subscriber station is buffered until the signal beam angle of the signal beam allows efficient transmission. The base station may alter the beam sweep speed or the shape of the beam's radiation pattern over time to maximize system efficiency and capacity.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: October 3, 2006
    Assignee: Qualcomm, Inc.
    Inventors: Tao Chen, Fuyun Ling, Jack Holtzman, Yu-Cheun Jou, Stein A. Lundby
  • Patent number: 7072322
    Abstract: A method and apparatus for selecting a favored transmission slot for communicating non-voice data in conjunction with a voice-data communication. The slot, reflecting a favored power level and transmission rate for transmitting the non-voice data on a supplemental channel, is selected based upon the transmission power levels for voice-data transmitted by a base station to a remote station on a fundamental channel. The favored transmission slot is selected without the remote station messaging information to the base station concerning frequency channel or interference information for the supplemental channel.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: July 4, 2006
    Assignee: Qualcomm Incorporated
    Inventors: Jack Holtzman, Gang Bao
  • Patent number: 7072321
    Abstract: A method and apparatus for selecting a favored transmission slot for communicating non-voice data in conjunction with a voice-data communication. The slot, reflecting a favored power level and transmission rate for transmitting the non-voice data on a supplemental channel, is selected based upon the transmission power levels for voice-data transmitted by a base station to a remote station on a fundamental channel. The favored transmission slot is selected without the remote station messaging information to the base station concerning frequency channel or interference information for the supplemental channel.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: July 4, 2006
    Assignee: Qualcomm Incorporated
    Inventors: Jack Holtzman, Gang Bao
  • Patent number: 7027392
    Abstract: A method (100) for scheduling packet data transmissions in a wireless communication system wherein a per-user Priority Function (PF) is calculated as a function of packet delay time of the user. When a given user has a packet delay time violating a threshold, the PF of the user is adjusted accordingly. In one embodiment, a delay function is applied to the PF calculation, wherein the delay function considers the average requested data rate for all users in the active set having pending data and the average data rate of a given user.
    Type: Grant
    Filed: August 14, 2001
    Date of Patent: April 11, 2006
    Assignee: Qualcomm, Incorporated
    Inventors: Jack Holtzman, Gwendolyn D. Barriac
  • Publication number: 20060030345
    Abstract: Method and apparatus for congestion control in a wireless communication system. In one embodiment, the status of a congestion bit indicates the type of adjustment, such as increase or decrease, to be performed at an access terminal to determine the next data rate for transmissions on the reverse link. The status of the congestion bit is determined by comparing a congestion parameter to a predetermined threshold. One embodiment implements an outerloop threshold having a margin with respect to the desired congestion metric threshold. The outerloop threshold is adjusted in response to comparing a measured congestion metric to the desired threshold. The outerloop threshold adjustment maintains the congestion metric to within a predetermined probability of exceeding the desired threshold.
    Type: Application
    Filed: October 12, 2005
    Publication date: February 9, 2006
    Inventors: Avinash Jain, Jack Holtzman
  • Patent number: 6996127
    Abstract: A method, and corresponding apparatus, applies to individual base stations in a wireless communications systems, where each base station performs rate assignment to mobile stations optimally, but independently of the other base stations. Different base stations affect each other through other cell interference, and continuously modify their reversed link rate assignment based on the other-cell interference received and the requested rates from the mobile stations. The base stations converge to a stable condition with uncoordinated optimizations. The optimizing technique maximizes total through put in each cell (maximizing rates) while maintaining interference to other cells at a minimum level, and being subject to at least some of the following constraints: mobile station's maximum transmit power, mobile station's requested rate, discrete set of possible rates, maximum rise-over-thermal interference at the base station, and minimum required received error per bit normalized for noise.
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: February 7, 2006
    Assignee: Qualcomm Incorporated
    Inventors: Ramin Rezaiifar, Jack Holtzman
  • Publication number: 20050190718
    Abstract: Methods and apparatus are presented for scheduling data packet transmissions during optimal channel conditions. In one method, data packet retransmissions are scheduled for transmission during favorable channel conditions when the target remote station is moving slowly, but are scheduled for periodic transmissions when the target is moving moderately or fast. In another method, long delays for retransmissions in a channel sensitive timing scheme are eliminated. In other methods, a combination of periodic and aperiodic retransmissions are used to achieve the desired frame error rate.
    Type: Application
    Filed: October 8, 2004
    Publication date: September 1, 2005
    Inventors: Jack Holtzman, Sandip Sarkar, Ahmed Saifuddin
  • Publication number: 20050129063
    Abstract: A method (18) for scheduling packet data transmissions in a wireless communication system wherein a per-user Priority Function (PF) (24) is based on a channel condition indicated by a Rate Request Indicator (RRI). The method also considers fairness criteria dictated by predetermined Quality of Service (QOS) requirements. In one embodiment, the rate request indicator is a Data Rate Request (DRR). In another embodiment, the rate request indicator is Carrier-to-Interference (C/I) information. In the exemplary embodiment, the base station calculates a Priority Function (PF) for the multiple mobile users. Each PF is a function of the rate request indicator and the projected throughput of a given mobile user. The PF values allow the base station to schedule active mobile units having pending data. The scheduling produces an approximately equal share of the allocated transmission time to the multiple mobile stations.
    Type: Application
    Filed: January 21, 2005
    Publication date: June 16, 2005
    Inventors: Leonid Razoumov, Jack Holtzman
  • Publication number: 20050124369
    Abstract: A method and apparatus for overload detection and control is disclosed. A base station may be in communication with one or more subscriber stations. Overload may be detected as a function of a plurality of parameters, each of which places a load on the base station. Both the type and degree of overload may be ascertained. Appropriate remedial measures may be implemented that are suitable to the type and degree of overload detected.
    Type: Application
    Filed: December 3, 2003
    Publication date: June 9, 2005
    Inventors: Rashid Attar, Bibhu Mohanty, Jack Holtzman, Jelena Damnjanovic
  • Publication number: 20050063332
    Abstract: A method and apparatus for selecting a favored transmission slot for communicating non-voice data in conjunction with a voice-data communication. The slot, reflecting a favored power level and transmission rate for transmitting the non-voice data on a supplemental channel, is selected based upon the transmission power levels for voice-data transmitted by a base station to a remote station on a fundamental channel. The favored transmission slot is selected without the remote station messaging information to the base station concerning frequency channel or interference information for the supplemental channel.
    Type: Application
    Filed: October 22, 2004
    Publication date: March 24, 2005
    Inventors: Jack Holtzman, Gang Bao
  • Publication number: 20050054366
    Abstract: Method and apparatus for adjusting the transmission power of base stations in simultaneous communication with a mobile station. The methods described provide for the transmission power of the base stations to be aligned. In the first exemplary embodiment, the transmitters are attached to a separate control unit through communication links. The control unit then derives the most likely command stream and send that to the base stations. In the second exemplary embodiment, the control unit periodically receives the final or average transmit level in a period and an aggregate quality measure for the feedback during a period from each of the transmitters. The control unit determines the aligned power level and transmits a message indicative of the aligned power level to the transmitters.
    Type: Application
    Filed: October 18, 2004
    Publication date: March 10, 2005
    Inventors: Tao Chen, Jack Holtzman, Leonid Razoumov, Shimman Patel, Keith Saints, Edward Tiedemann
  • Publication number: 20050053031
    Abstract: A method and apparatus for selecting a favored transmission slot for communicating non-voice data in conjunction with a voice-data communication. The slot, reflecting a favored power level and transmission rate for transmitting the non-voice data on a supplemental channel, is selected based upon the transmission power levels for voice-data transmitted by a base station to a remote station on a fundamental channel. The favored transmission slot is selected without the remote station messaging information to the base station concerning frequency channel or interference information for the supplemental channel.
    Type: Application
    Filed: October 22, 2004
    Publication date: March 10, 2005
    Inventors: Jack Holtzman, Gang Bao
  • Patent number: 6850506
    Abstract: A method and apparatus for selecting a favored transmission slot for communicating non-voice data in conjunction with a voice-data communication. The slot, reflecting a favored power level and transmission rate for transmitting the non-voice data on a supplemental channel, is selected based upon the transmission power levels for voice-data transmitted by a base station to a remote station on a fundamental channel. The favored transmission slot is selected without the remote station messaging information to the base station concerning frequency channel or interference information for the supplemental channel.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: February 1, 2005
    Assignee: Qualcomm Incorporated
    Inventors: Jack Holtzman, Gang Bao
  • Publication number: 20050003848
    Abstract: Techniques to adjust the setpoint of a power control loop in a wireless communication system. The setpoint may be adjusted based on frame status indicative of erased/good decoded frames, one or more (typically soft) metrics indicative of the confidence in the decoded results, power surplus/deficit indicative of the difference between the received signal quality and the setpoint, setpoint surplus/deficit indicative of the difference between the setpoint and a threshold Eb/Nt needed for the desired level of performance, or a combination thereof. The metrics may include re-encoded symbol error rate, re-encoded power metric, modified Yamamoto metric, minimum or average LLR among decoded bits, number of decoding iterations, and possibly others. The setpoint may be adjusted in different manners and/or by different amounts depending on the above-noted factors. The techniques may be employed for forward and/or reverse links in CDMA systems.
    Type: Application
    Filed: July 12, 2004
    Publication date: January 6, 2005
    Inventors: Tao Chen, Jack Holtzman, Fuyun Ling, Keith Saints, Nagabhushana Sindhushayana, Charles Wheatley
  • Publication number: 20050002348
    Abstract: Method and apparatus for controlling transmission power in a closed loop power control system, wherein power control commands are based on the energy of the previous power control commands. In one embodiment, the method compares changes in the received energy of received power control commands against expected changes in those commands based on previously transmitted power control commands, and identifies suspicious responses to said previously transmitted power control commands. Hypothesis testing of the received power control commands is performed accordance any identified suspicious responses.
    Type: Application
    Filed: July 28, 2004
    Publication date: January 6, 2005
    Inventors: Jack Holtzman, Tao Chen, Leonid Razoumov
  • Patent number: 6782277
    Abstract: A method and apparatus for wireless communications wherein a base station transmits a signal to sending data to a subscriber station through a signal beam that sweeps through the coverage area of the base station. User data addressed to the subscriber station is buffered until the signal beam angle of the signal beam allows efficient transmission. The base station may alter the beam sweep speed or the shape of the beam's radiation pattern over time to maximize system efficiency and capacity.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: August 24, 2004
    Assignee: Qualcomm Incorporated
    Inventors: Tao Chen, Fuyun Ling, Jack Holtzman, Yu-Cheun Jou, Stein A. Lundby
  • Patent number: 6771700
    Abstract: Method and apparatus for transmitting a signal at a predetermined level of reliability using retransmission of erroneously transmitted frames so as to minimize total transmission energy. The transmitting station evaluates the frame error rate (FER) as a function of energy. Next, the transmitting station determines a combination of initial transmission energies and retransmission energies that will provide the target level of reliability while minimizing the total transmission energy employed in the initial transmission and the retransmissions. The transmitting station transmits a frame with an initial transmission energy. Employing conventional feedback methods the transmitting station is alerted to the occurrence of frame errors at the receiving station. The transmitting station upon notification of a frame error retransmits the frame with an energy determined to minimize the total energy required to transmit the frame with a predetermined level of reliability.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: August 3, 2004
    Assignee: Qualcomm Incorporated
    Inventors: Leonid Razoumov, Jack Holtzman, Stein A. Lundby