Patents Represented by Attorney Russell B. Miller
  • Patent number: 6157828
    Abstract: The invention is a method and apparatus for providing an Alert With Information Message signal between a mobile switching center and a base station in a cellular communication system. The invention recognizes that current provisions of the IS-634 standard lack support for certain required functionality on the interface between a mobile switching center and a base station, or the A-Interface. An Alert With Information Message signal is introduced on the A-Interface to support the required functionality. Introduction of the Alert With Information Message provides support for reliable call processing on the A-Interface for the call waiting procedure and the hard handoff procedure.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: December 5, 2000
    Assignee: Qualcomm Incorporated
    Inventor: Rajeev Krishnamurthi
  • Patent number: 6149443
    Abstract: A ground connector and standoff apparatus or spring member for mounting between two circuit boards is of conductive material and has opposing substantially flat, parallel first and second legs and a spring link connecting the legs. In an uncompressed condition of the spring member, the legs are spaced apart a predetermined distance greater than the spacing between the two circuit boards when connected together. The first leg is connected to one of the circuit boards and the second leg bears against an opposing portion of the other circuit board to provide a ground connection when the boards are connected together, compressing the spring member. A limiter or spacer on the spring member limits compression beyond a predetermined point at which the height of the spring member is equal to a predetermined standoff between the boards.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: November 21, 2000
    Assignee: Qualcomm Incorporated
    Inventor: Sean A. Moran
  • Patent number: 6134434
    Abstract: A system and method for providing subscriber unit or base station initiated service negotiation in a wireless communication system. Message generators in the mobile switching center, base station, and subscriber unit compose messages to be transmitted in association with the service negotiation, while message processors analyze received messages in order to direct the message generators to compose the appropriate response messages. In a subscriber unit initiated service negotiation, the subscriber unit initiates service negotiation by sending a Service Request Message to the base station containing the requested service configuration. The base station then checks with the mobile switching center to ensure that the requested service configuration is authorized for use by the particular subscriber unit.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: October 17, 2000
    Assignee: QUALCOMM Incorporated
    Inventors: Rajeev Krishnamurthi, Bibhu P. Mohanty, Roy F. Quick, Jr., Chih-ping Hsu
  • Patent number: 6118250
    Abstract: A portable phone has an internal battery and an external battery pack that is releasably attachable to the phone. A control unit in the phone controls connection of the respective batteries to a phone power input, depending on the detection of the external battery voltage. Whenever an external battery is present with a voltage above a predetermined minimum value, the external battery will be connected to the phone power input to provide power to operate the phone, so that the internal battery lifetime is extended. When the external battery voltage falls below the minimum value, or the external battery is removed, the unit automatically switches to internal battery power, so that the external battery can be changed without interrupting power supply to the phone, if the phone is on or during a call. An improved multi-phase software controlled battery-charging method and apparatus is used to charge the internal and external battery packs.
    Type: Grant
    Filed: July 6, 1998
    Date of Patent: September 12, 2000
    Assignee: QUALCOMM Incorporated
    Inventors: James A. Hutchison, IV, Tad A. Hove, Paul E. Peterzell
  • Patent number: 6118826
    Abstract: A method and apparatus for encoding and decoding QAM trellis modulated data. In the transmitter, a subset of bits of an input bit set are convolutionally encoded based upon a punctured convolutional code of a lower data rate to provide a set of coded symbols. The coded symbols and the uncoded bits of the input bit set are provided to a QAM modulator to provide a QAM modulation signal indicative of the values of coded symbols and the uncoded bits. In the receiver a QAM demodulator converts the received QAM signal to QAM signal space coordinates. A decoder employing the Viterbi algorithm is used to reconstruct a corrected estimate of the values of the coded data bits from the received signal coordinates. The corrected estimate of the values of the coded data bits are then used in conjunction with the received signal coordinates to provide corrected estimates of the values of the uncoded input bits.
    Type: Grant
    Filed: July 16, 1997
    Date of Patent: September 12, 2000
    Assignee: QUALCOMM Incorporated
    Inventors: Ephraim Zehavi, Jack Keil Wolf
  • Patent number: 6111857
    Abstract: A novel and improved method and apparatus for planning a wireless telecommunications network. An electronic representation of wireless telecommunications system can be configured within a given market area and the operation of that wireless telecommunications system simulated. The simulation is performed using a set of databases that contain terrain and population information associated with the market area over which the wireless network in configured. To perform the simulation a composite propagation loss matrix and a demand and service vector are generated using the terrain and population information, as well as the configuration of the wireless telecommunications network. Once the composite propagation loss matrix and the demand and service vector are generated an analysis of the reverse link is performed. Subsequently, an analysis of the forward link is performed. During both the reverse and forward link analysis the multiple iterations of analysis are performed until a stable result is achieved.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: August 29, 2000
    Inventors: Samir S. Soliman, Sheila M. Reynolds
  • Patent number: 6111865
    Abstract: A novel and improved method and system for paging a cellular telephone or other wireless terminal using two paging channels that reduces standby mode power consumption described. In one embodiment of the invention, a minimally encoded quick paging channel is established over which short, quick page messages are transmitted during one of a set of quick paging slots. The quick page message indicates that a communications request has been received, and that the receiving communication terminals should process a highly encoded full paging channel over which more detailed, full page messages are transmitted during the next full paging slot. A terminal monitors full paging channel only after a quick page message has been received on the quick paging channel.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: August 29, 2000
    Assignee: Qualcomm Incorporated
    Inventors: Brian K. Butler, Klein S. Gilhousen
  • Patent number: 6108364
    Abstract: A method and apparatus for time division duplex (TDD) repeating a spread spectrum signal, where spread spectrum signal is comprised of a series of code symbol modulated with a pseudonoise (PN) sequence. The TDD repeater receives intermittently the spread spectrum signal at a location remote from a source supplying the spread spectrum signal. The TDD repeater amplifies and delays the received spread spectrum signal by a predetermined amount. The TDD repeater transmits intermittently the delayed amplified received spread spectrum signal such that the TDD is not receiving the spread spectrum signal when it is transmitting the signal energy.
    Type: Grant
    Filed: August 31, 1995
    Date of Patent: August 22, 2000
    Assignee: Qualcomm Incorporated
    Inventors: Lindsay A. Weaver, Jr., Franklin P. Antonio, Richard F. Dean
  • Patent number: 6101397
    Abstract: The process of the present invention enables a mobile radiotelephone to signal a request for a voice connection after transmission of a facsimile image. The user depresses a button on the radiotelephone when a voice connection is needed. The radiotelephone transmits the request as a frame of data to the base station. The base station interprets the request and, after the facsimile transmission, turns off the modems and turns on the speech coders in anticipation of the voice signal.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: August 8, 2000
    Assignee: Qualcomm Incorporated
    Inventors: Matthew S. Grob, Gadi Karmi
  • Patent number: 6101179
    Abstract: A method and system for open loop power control in a CDMA communication system. The method and system controls the power of a mobile station transmission signal in a CDMA communication system having a base station which transmits a pilot signal. The method includes calculating, in the base station, a base station pilot transmit power value, and a base station receiver sensitivity value. The base station transmits the pilot transmit power value and the receiver sensitivity value to said mobile station. In turn, the mobile station calculates a mean output power in response to the base station pilot transmit power value and the base station receiver sensitivity value.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: August 8, 2000
    Assignee: QUALCOMM Incorporated
    Inventor: Samir S. Soliman
  • Patent number: 6097972
    Abstract: The transmitted power of a mobile telephone is established by power control bits that are transmitted in a traffic channel from a base station and that are demodulated by a rake receiver in the telephone. The rake receiver includes a plurality of demodulators that demodulate respective fingers of the traffic channel which may be caused by multipath conditions, with the power control bits from each demodulator being combined with the power control bits of the other demodulators in the rake receiver regardless of whether the demodulators are in lock with their respective fingers. The combined power control signal from a rake receiver associated with a first base station is then tested against a threshold. If the combined power is at least equal to the threshold, the combined power control signal is sent to a logic combiner. If other base stations are communicating with the mobile telephone, the combined power control signal from each of these other base stations is also sent to the logic combiner.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: August 1, 2000
    Assignee: QUALCOMM Incorporated
    Inventors: Keith W. Saints, Edward G. Tiedemann, Jr.
  • Patent number: 6094465
    Abstract: A method and apparatus for decoding a frame of multi-rate encoded digital data which contains redundant information provided to validate the decoding operation. A frame of data is received which contains information bits and cyclic redundancy check (CRC) bits. In accordance with the invention, the received frame is decoded and a check is conducted to determine whether the CRC bits correspond correctly for the decoded information bits. If the decoded frame passes the CRC test process, the decoded fame is provided to the user. However, if the decoded frame does not pass the CRC test, then at least one additional decoding process is performed on the received frame. In the first exemplary embodiment of the present invention, on a failure of the CRC check, the data is decoded using a trellis decoder and the data that yields the next most likely path through the trellis is selected.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: July 25, 2000
    Assignee: QUALCOMM Incorporated
    Inventors: Jeremy M. Stein, Ayal Bar-David
  • Patent number: 6091309
    Abstract: An oscillator comprises an active device with a phase shift of less than 180 degrees. A first delay line has first and second ends. The first end of the first delay line is coupled to an active port of the active device. A ring mode trap filter is coupled to the second end of the first delay line. A second delay line has first and second ends. The first end of the second delay line is coupled to the ring mode trap filter. The second end of the second delay line is coupled to a resonance means. The total delay of the first and second delay lines allows the resonance means to oscillate at its natural frequency in spite of the less-than-180-degree phase shift of the active device.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: July 18, 2000
    Inventors: Joseph P. Burke, Peter D. Heidmann
  • Patent number: 6085349
    Abstract: The method for selecting CRC polynomials (or CRC generators) for linear coded systems. In the exemplary embodiment, a communication system utilizes a concatenated code comprising a CRC code and a convolutional code. The CRC generators are selected based on the distance spectrums which have been computed for all possible CRC generators of a given length L. The distance spectrum comprises a listing of the number of paths (or code words) at various weights (or Hamming distance). These paths represent error information sequences I(x) which have diverged from an all-zero transmitted sequence (or the zero state) and have merged back into the zero state. The paths are checked by the CRC generators. If the CRC check passes, indicating that the error information sequence is undetected by the CRC check, the weight of this path is calculated and the distance spectrum for this CRC generator is updated. Otherwise, if the CRC does not check, the path is ignored. The CRC generator with the maximum minimum distance d.sub.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: July 4, 2000
    Assignee: Qualcomm Incorporated
    Inventor: Jeremy M. Stein
  • Patent number: 6078284
    Abstract: A system and method for passively determining the position of a user terminal (for example, a mobile wireless telephone) in a low-Earth orbit satellite communications system. The system includes a user terminal, at least two satellites with known positions and known velocities, and a gateway (that is, a terrestrial base station) for communicating with the user terminal through the satellites. The method includes the steps of determining a range difference parameter and a range-rate difference parameter. A range difference parameter represents the difference between (1) the distance between a first one of the satellites and the user terminal and (2) the distance between a second one of the satellites and the user terminal. A range-rate difference parameter represents the difference between (a) a relative radial velocity between a first one of the satellites and the user terminal and (b) a relative radial velocity between a second one of the satellites and the user terminal.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: June 20, 2000
    Assignee: QUALCOMM Incorporated
    Inventor: Nadav Levanon
  • Patent number: 6075859
    Abstract: In a communications system, a method of transforming a set of message signals representing a message comprising the steps of first encoding one of the set of message signals in accordance with a first keyed transformation, a second encoding of the one of the set of message signals in accordance with at least one additional keyed transformation, a third encoding of the one of the set of message signals in accordance with a self inverting transformation in which at least one of the set of message signals is altered, a fourth encoding of the one of the set of message signals in accordance with at least one additional inverse keyed transformation wherein each of the at least one additional inverse keyed transformation is a corresponding inverse of at least one additional keyed transformation, and fifth encoding the one of the set of message signals in accordance with first inverse keyed transformation wherein the first inverse keyed transformation is the inverse of the first keyed transformation.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: June 13, 2000
    Assignee: QUALCOMM Incorporated
    Inventor: Gregory G. Rose
  • Patent number: 6073013
    Abstract: The mobile telephone system employs a fleet of satellites and a set of gateway ground stations arranged around the globe for handling communications to and from mobile communication units such as mobile telephones. Signals are transmitted between a subscriber unit and the nearest gateway via one or more of the satellites. The gateway system is configured to process telephone call connection requests from a mobile subscriber unit based upon the location of the subscriber unit. The system parses telephone numbers received from the subscriber unit based upon the parsing scheme of the locality in which the subscriber unit is located at the time the telephone call is placed. The system also identifies any emergency services numbers called, such as 911, and directs such calls to the nearest emergency services center to the current location of the subscriber unit.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: June 6, 2000
    Assignee: Qualcomm Incorporated
    Inventors: Daniel H. Agre, Michael K. Spartz, Rodger M. Constandse
  • Patent number: 6073007
    Abstract: A method and apparatus for providing personal and business mobile wireless communications service is described. A message is received having a message type. Message separability and cost allocation is performed based on the message type. The message is processed when the message is a fleet message, and the message is forwarded to a message management center when the message is a personal message. Once the message is forwarded, it is deleted. In one embodiment of the invention, the messages are transmitted via a wireless satellite link between a mobile communications terminal and a network management system. A fleet computer receives the messages from the network management system and, after determining whether they are personal or fleet messages, processes them accordingly.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: June 6, 2000
    Assignee: Qualcomm Incorporated
    Inventor: Thomas F. Doyle
  • Patent number: 6069526
    Abstract: A power amplifier circuit arrangement particularly useful for portable phones used in wireless systems. A power amplifier stage can be partially or completely bypassed so that multi-stage amplifiers can be built that allow wide dynamic range of power amplification to be obtained efficiently. A switch at the input of an amplifier stage couples an input signal either to an amplifier or to a bypass path. The output of the amplifier is coupled to a first impedance-transforming network. The bypass path includes a second impedance-transforming network. A third impedance transforming network couples the outputs of the first and second impedance transforming networks. The impedance transforming networks are constructed and arranged so that input and output signals see the correct load regardless of whether the amplifier is used or bypassed. Using the principles of this invention, multi-stage amplifiers can be constructed including input and bypass attenuators to achieve a wide range of gain levels.
    Type: Grant
    Filed: August 4, 1998
    Date of Patent: May 30, 2000
    Assignee: Qualcomm Incorporated
    Inventor: Gary J. Ballantyne
  • Patent number: D429210
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: August 8, 2000
    Assignee: QUALCOMM Incorporated
    Inventors: Thomas J. Chintala, Richard M. Abney, Brett A. Kayzar, Gina M. Lombardi, Jeffrey J. Rhine, Stanley Scheufler, John J. Wendorff, Thomas J. Zeran