Patents by Inventor Brian K. Classon

Brian K. Classon 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).

  • Publication number: 20020159384
    Abstract: An apparatus and method for transmitting and receiving data, wherein retransmissions of information can be a different size from the initial transmission. The invention utilizes a partial Chase encoder 306 to truncate or expand data depending on the availability of channel resources for retransmission. A partial Chase combiner 314 processes the received demodulated data based solely on the number of codes and modulation received (i.e., predetermined, with no additional signaling required). If the received retransmission is smaller than the first transmission, only a portion of the soft bits are combined. If the retransmission is larger than the first transmission, some values of the stored first transmission are combined with more than one received soft bit in the retransmission.
    Type: Application
    Filed: March 28, 2002
    Publication date: October 31, 2002
    Inventors: Brian K. Classon, Amitava Ghosh
  • Publication number: 20020145985
    Abstract: A communication system includes a forward link from a base station to multiple mobile units, the forward link having multiple shared channels (SHCH's), multiple shared control channels (SHCCH's), and multiple dedicated pointer control channels (DPTRCH's), and utilizes HARQ error control for error detection and error correction. The mobile unit, when listening to the DPTRCH, uses a SHCCH pointed to by the DPTRCH to demodulate and decode data on the SHCH. Throughput problems may arise in the system when the mobile unit combines and decodes the wrong SHCH data, that is, SHCH data that is intended for a different mobile unit, or may incorrectly decodes SHCH data that is intended for the mobile unit. In order to improve the data throughput of the system, the systems employs a flush test and an energy detector test to prevent improperly decoded data blocks from corrupting properly decoded data blocks.
    Type: Application
    Filed: February 6, 2002
    Publication date: October 10, 2002
    Inventors: Robert T. Love, Robert S. Nikides, Louay A. Jalloul, Mark C. Cudak, Brian K. Classon
  • Patent number: 6366601
    Abstract: A communication system (100) provides selecting a first modulation-coding scheme (111) based on a quality indicator of a communication between a source user and a first destination user, determining a first possible number of data bits (201) that can be modulated and encoded according to selected modulation-coding scheme (111) and spread according to one spreading code of a plurality of spreading codes (108-1 through 108-k) which results in fitting in a predetermined time frame, determining a first number of data bits (102) to be transmitted from the source user to the first destination user, determining a first load level based on comparing first number of data bits (102) and first possible number of data bits (201), and, if the first load level is unequal to a whole number, rounding to a next first whole number, selecting a first number of plurality of spreading codes (108-1 through 108-k) based on the first whole number of load level for spread coding of first number of data bits (102) after being modulate
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: April 2, 2002
    Assignee: Motorola, Inc.
    Inventors: Amitava Ghosh, Brian K. Classon, Mark C. Cudak, Louay Jalloul
  • Patent number: 6308294
    Abstract: A generic structure of Hybrid ARQ using Turbo Codes is provided which requires the function of a) channel coding, b) redundancy selection, c) buffering and max-ratio diversity combining, d) channel decoding, e) error detection and f) sending back an acknowledgement to the transmitter. The functions (a) and (b) are performed at the transmitter while functions (c) to (f) are performed at the receiver. The initial code rate can be explicitly communicated to the receiver or blindly detected.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: October 23, 2001
    Assignee: Motorola, Inc.
    Inventors: Amitava Ghosh, Brian K. Classon, Mark C. Cudak, Louay Jalloul
  • Patent number: 6275488
    Abstract: A method in a communication system (100) includes transmitting from a source user (101) a first data packet (111) over a first time frame (121) having a finite time period (131), transmitting from source user (101) a second data packet (112) over a second time frame (122) immediately subsequent to first time frame (121), detecting an acknowledgment of acceptable reception of data packet associated with either first or said second data packets (111 and 112), repeating transmission of first and second data packets (111 and 112) in a sequence of first and second time frames (121 and 122) in a time frame sequence (190) until the detection.
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: August 14, 2001
    Assignee: Motorola, Inc.
    Inventors: Mark C. Cudak, Brian K. Classon, Louay Jalloul, Amitava Ghosh
  • Patent number: 6253063
    Abstract: A mobile station (110) selects an initial data rate for communication between base station (107) and mobile station (110). Mobile station (110) communicates the selected initial data rate to base station (107) through uplink (112). Base station (107) determines a difference level of interference condition experienced by mobile station (107) between a time when the initial data rate was selected by mobile station (110) and a time when base station (107) prepares to communicate to mobile station (110). Base station (107) selects a final data rate for transmission from base station (107) to mobile station (110) based on the determined difference level of interference condition. As such, the initial data rate may be modified to the final data rate while maximizing the down link capacity.
    Type: Grant
    Filed: January 25, 2000
    Date of Patent: June 26, 2001
    Assignee: Motorola, Inc.
    Inventors: Mark C. Cudak, Brian K. Classon, Louay A. Jalloul, Amitava Ghosh, Robert T. Love