Patents by Inventor Roy Thomas Derryberry

Roy Thomas Derryberry 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: 7146171
    Abstract: A method is described for transmitting data from a mobile station to a wireless network, as is a wireless communications system that operates in accordance with the method. The method includes (a) requesting permission to transmit data using an access channel; (b) in response to receiving a permission message from the wireless network, transmitting the data from the mobile station to the wireless network over a control channel using a modulation and channel coding scheme determined in the wireless network, and communicated to mobile station in the permission message; and (c) in response to receiving the transmitted data at the wireless network, soft combining the received data with previously received data, if any, until a desired decoding result is achieved, and transmitting an acknowledgment of data reception to the mobile station. The steps of transmitting and receiving preferably use a code division, multiple access technique.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: December 5, 2006
    Assignee: Nokia Corporation
    Inventors: Clive K. Tang, Mohamed El-Rayes, Roy Thomas Derryberry, Giridhar Dhati Mandyam
  • Publication number: 20040242231
    Abstract: A method is described for transmitting data from a mobile station to a wireless network, as is a wireless communications system that operates in accordance with the method. The method includes (a) requesting permission to transmit data using an access channel; (b) in response to receiving a permission message from the wireless network, transmitting the data from the mobile station to the wireless network over a control channel using a modulation and channel coding scheme determined in the wireless network, and communicated to mobile station in the permission message; and (c) in response to receiving the transmitted data at the wireless network, soft combining the received data with previously received data, if any, until a desired decoding result is achieved, and transmitting an acknowledgment of data reception to the mobile station. The steps of transmitting and receiving preferably use a code division, multiple access technique.
    Type: Application
    Filed: May 30, 2003
    Publication date: December 2, 2004
    Applicant: NOKIA CORPORATION
    Inventors: Clive K. Tang, Mohamed El-Rayes, Roy Thomas Derryberry, Giridhar Dhati Mandyam
  • Publication number: 20040229640
    Abstract: Near-far effect fading is counteracted by changing the spreading factor used for uplink channel spreading. The determination that a radio uplink channel power fade exists can be made in either the radio access network or the mobile station.
    Type: Application
    Filed: February 17, 2004
    Publication date: November 18, 2004
    Applicant: Nokia Corporation
    Inventors: Yan Wang, Roy Thomas Derryberry
  • Patent number: 6717931
    Abstract: Near-far effect fading is counteracted by changing the spreading factor used for uplink channel spreading. The determination that a radio uplink channel power fade exists can be made in either the radio access network or the mobile station.
    Type: Grant
    Filed: January 2, 2002
    Date of Patent: April 6, 2004
    Assignee: Nokia Corporation
    Inventors: Yan Wang, Roy Thomas Derryberry
  • Publication number: 20030123382
    Abstract: Near-far effect fading is counteracted by changing the spreading factor used for uplink channel spreading. The determination that a radio uplink channel power fade exists can be made in either the radio access network or the mobile station.
    Type: Application
    Filed: January 2, 2002
    Publication date: July 3, 2003
    Applicant: Nokia Corporation
    Inventors: Yan Wang, Roy Thomas Derryberry
  • Patent number: 6498785
    Abstract: A method and apparatus for power control on a first channel that is shared by multiple mobile stations transmitting to base stations in a telecommunication system. An initial mobile station transmission power level is set on the first channel that is shared in the random access mode. The transmission power level may be determined based on a desired performance level of the first channel. The method and system may be efficiently applied on a channel that carries a transmission in one or more bursts, with each burst including the same or a varying number of frames of varying sizes. The method and apparatus utilizes a second channel that is shared by multiple mobile stations for transmitting the power control signaling from the base stations to the mobile stations.
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: December 24, 2002
    Assignee: Nokia Mobile Phones Ltd
    Inventors: Roy Thomas Derryberry, Steven D. Gray, Zhigang Rong
  • Publication number: 20020128026
    Abstract: A system and method are provided for reducing the time delay associated with compensating for fading effects. The system includes a base station and a mobile station in communication. The base station transmits information and a pilot signal to the mobile station through each of the channels. The mobile station receives the information as noisy information and the pilot signal as a noisy pilot signal from each of the channels and compares the received noisy pilot signals to determine and predict a weight to be assigned to each of the channels. The calculated predicted weights are transmitted from the mobile station back to the base station as predicted feedback information that is utilized by the base station to alter the characteristics of the modulated carrier signal prior to transmission.
    Type: Application
    Filed: June 29, 2001
    Publication date: September 12, 2002
    Inventors: Roy Thomas Derryberry, Dumitru Mihai Ionescu, Balaji Raghothaman