Patents by Inventor David Jonathan Reader

David Jonathan Reader 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).

  • Access to communications systems
    Patent number: 6850504
    Abstract: In a code division multiple access (CDMA) wireless system, a wireless terminal transmits information packets to a communications systems controller. Each information packet comprises a piggy back field which indicates to the communication systems controller resources requested by the wireless terminal for transmission of subsequent information packets.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: February 1, 2005
    Assignee: Lucent Technologies Inc.
    Inventors: Qiang Cao, Lorenz Fred Freiberg, David Jonathan Reader
  • Asymmetric multiple access protocol for a communication system
    Patent number: 6353598
    Abstract: The invention relates to mobile cellular communication systems in which asymmetric access to a time division duplex (TDD) communication channel is provided. The channel is divided (by TDD) into slots which are allocated to either uplink communication or downlink communication by the base station in each cell. Timing of slots, and thus of compulsory uplink and downlink slots, is coordinated across the cells of a system.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: March 5, 2002
    Assignee: Lucent Technologies Inc.
    Inventors: Charlotte Catherine Elizabeth Baden, Qiang Cao, Lorenz Fred Freiberg, David Jonathan Reader
  • Power control for mobile wireless communication system
    Patent number: 6292471
    Abstract: Power control mechanisms control signal strength in a mobile wireless communication systems which communicate, at least initially, over different channels. By measuring the Signal-to-Interference ratio in signals received by a receiving station and returning that information to the transmitting station, an indication of appropriate power levels at which to transmit subsequent signals is given.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: September 18, 2001
    Assignee: Lucent Technologies Inc.
    Inventors: Qiang Cao, Lorenz Fred Freiberg, David Jonathan Reader