Patents by Inventor Peter J. Graumann

Peter J. Graumann 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: 8625498
    Abstract: Allocations for access in a wireless system may be tiled onto a subframe having a first dimension and a second dimension. In an exemplary embodiment, allocations are distributed along the first dimension while the second dimension is locked, and the allocations are distributed along the second dimension while the first dimension is locked. In another exemplary embodiment, allocations are striped by extending a length of a first allocation along the first dimension and by expanding a breadth of the first allocation along the second dimension responsive to a size of the first allocation and by extending a length of a second allocation along the second dimension and expanding a breadth of the second allocation along the first dimension responsive to a size of the second allocation. In yet another exemplary embodiment, multiple allocations are placed proximately to an allocation placement target and allocation-free areas are produced on a subframe.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: January 7, 2014
    Assignee: WI-LAN, Inc.
    Inventors: Yair Bourlas, Peter J. Graumann, Sina Zahedi, Ron Porat
  • Patent number: 8594135
    Abstract: The subject matter disclosed herein provides methods and apparatus, including computer program products, for detecting a preamble to enable acquisition of a downlink. In one aspect, there is provided a method. The method may include receiving a plurality of symbols. From an autocorrelation of the received symbols, a guard interval may be detected. The guard interval may represent a receive/transmit transition gap (RTG). A metric may be used to verify whether at least one symbol positioned after the detected guard interval is a preamble. Related systems, apparatus, methods, and/or articles are also described.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: November 26, 2013
    Assignee: Wi-Lan, Inc.
    Inventors: Ron Porat, Yu Wen, Peter J. Graumann, Srikanth Gummadi
  • Patent number: 8509073
    Abstract: An error management system and process can be used to identify an erroneous data packet in a data stream. In response to identifying the erroneous data packet, a subsequent valid data packet is located in the data stream. In one embodiment, a plurality of candidate locations of header checksum windows are searched and checked for a valid checksum. Multiple integrity checks of multiple header checksums can be used to reduce the probability of a false positive integrity check. In another embodiment, one or more information data fields can used for determining packet integrity by determining if the fields contain valid information bits.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: August 13, 2013
    Assignee: Wi-Lan, Inc.
    Inventors: Yair Bourlas, Brian D. Petry, Peter J. Graumann, Kripps Asirvatham, Doraid Y. Sadiq, Karle J. Johnson, Kenneth L. Stanwood
  • Patent number: 8196024
    Abstract: The subject matter disclosed herein provides methods and systems for converting fixed-point soft bit values, provided by a demapper, into floating-point soft bits values. In one aspect, there is provided a method. The method may include receiving, from a demapper, soft bits formatted as a fixed-point value. Moreover, the soft bits may be converted from the fixed-point value to a floating-point value. The floating-point value is punctured to remove a bit. The converted soft bits are provided to a buffer to enable decoding of the buffered soft bits. Related systems, apparatus, methods, and/or articles are also described.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: June 5, 2012
    Assignee: Wi-LAN Inc.
    Inventors: Kirupairaj Asirvatham, Peifang Zhang, Siavash Sheikh Zeinoddin, Peter J. Graumann
  • Publication number: 20110242964
    Abstract: The subject matter disclosed herein provides methods and apparatus, including computer program products, for detecting a preamble to enable acquisition of a downlink. In one aspect, there is provided a method. The method may include receiving a plurality of symbols. From an autocorrelation of the received symbols, a guard interval may be detected. The guard interval may represent a receive/transmit transition gap (RTG). A metric may be used to verify whether at least one symbol positioned after the detected guard interval is a preamble. Related systems, apparatus, methods, and/or articles are also described.
    Type: Application
    Filed: June 14, 2011
    Publication date: October 6, 2011
    Applicant: WI-LAN INC.
    Inventors: Ron Porat, Yu Wen, Peter J. Graumann, Srikanth Gummadi
  • Publication number: 20110176446
    Abstract: An error management system and process can be used to identify an erroneous data packet in a data stream. In response to identifying the erroneous data packet, a subsequent valid data packet is located in the data stream. In one embodiment, a plurality of candidate locations of header checksum windows are searched and checked for a valid checksum. Multiple integrity checks of multiple header checksums can be used to reduce the probability of a false positive integrity check. In another embodiment, one or more information data fields can used for determining packet integrity by determining if the fields contain valid information bits.
    Type: Application
    Filed: March 29, 2011
    Publication date: July 21, 2011
    Applicant: WI-LAN, INC.
    Inventors: Yair Bourlas, Brian D. Petry, Peter J. Graumann, Kripps Asirvatham, Doraid Y. Sadiq, Karle J. Johnson, Kenneth L. Stanwood
  • Patent number: 7961593
    Abstract: The subject matter disclosed herein provides methods and apparatus, including computer program products, for detecting a preamble to enable acquisition of a downlink. In one aspect, there is provided a method. The method may include receiving a plurality of symbols. From an autocorrelation of the received symbols, a guard interval may be detected. The guard interval may represent a receive/transmit transition gap (RTG). A metric may be used to verify whether at least one symbol positioned after the detected guard interval is a preamble. Related systems, apparatus, methods, and/or articles are also described.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: June 14, 2011
    Assignee: Wi-Lan, Inc.
    Inventors: Ron Porat, Yu Wen, Peter J. Graumann, Srikanth Gummadi
  • Patent number: 7916641
    Abstract: An error management system and process can be used to identify an erroneous data packet in a data stream. In response to identifying the erroneous data packet, a subsequent valid data packet is located in the data stream. In one embodiment, a plurality of candidate locations of header checksum windows are searched and checked for a valid checksum. Multiple integrity checks of multiple header checksums can be used to reduce the probability of a false positive integrity check. In another embodiment, one or more information data fields can used for determining packet integrity by determining if the fields contain valid information bits.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: March 29, 2011
    Assignee: Wi-Lan, Inc.
    Inventors: Yair Bourlas, Brian D. Petry, Peter J. Graumann, Kripps Asirvatham, Doraid Y. Sadiq, Karle J. Johnson, Kenneth L. Stanwood
  • Publication number: 20090327820
    Abstract: The subject matter disclosed herein provides methods and systems for converting fixed-point soft bit values, provided by a demapper, into floating-point soft bits values. In one aspect, there is provided a method. The method may include receiving, from a demapper, soft bits formatted as a fixed-point value. Moreover, the soft bits may be converted from the fixed-point value to a floating-point value. The floating-point value is punctured to remove a bit. The converted soft bits are provided to a buffer to enable decoding of the buffered soft bits. Related systems, apparatus, methods, and/or articles are also described.
    Type: Application
    Filed: June 27, 2008
    Publication date: December 31, 2009
    Inventors: Kirupairaj Asirvatham, Peifang Zhang, Siavash Sheikh Zeinoddin, Peter J. Graumann
  • Publication number: 20090190465
    Abstract: The subject matter disclosed herein provides methods and apparatus, including computer program products, for detecting a preamble to enable acquisition of a downlink. In one aspect, there is provided a method. The method may include receiving a plurality of symbols. From an autocorrelation of the received symbols, a guard interval may be detected. The guard interval may represent a receive/transmit transition gap (RTG). A metric may be used to verify whether at least one symbol positioned after the detected guard interval is a preamble. Related systems, apparatus, methods, and/or articles are also described.
    Type: Application
    Filed: January 28, 2008
    Publication date: July 30, 2009
    Inventors: Ron Porat, Yu Wen, Peter J. Graumann, Srikanth Gummadi
  • Publication number: 20080176577
    Abstract: Allocations for access in a wireless system may be tiled onto a subframe having a first dimension and a second dimension. In an exemplary embodiment, allocations are distributed along the first dimension while the second dimension is locked, and the allocations are distributed along the second dimension while the first dimension is locked. In another exemplary embodiment, allocations are striped by extending a length of a first allocation along the first dimension and by expanding a breadth of the first allocation along the second dimension responsive to a size of the first allocation and by extending a length of a second allocation along the second dimension and expanding a breadth of the second allocation along the first dimension responsive to a size of the second allocation. In yet another exemplary embodiment, multiple allocations are placed proximately to an allocation placement target and allocation-free areas are produced on a subframe.
    Type: Application
    Filed: January 22, 2007
    Publication date: July 24, 2008
    Applicant: NextWave Broadband, Inc.
    Inventors: Yair Bourlas, Peter J. Graumann, Sina Zahedi, Ron Porat
  • Publication number: 20080002567
    Abstract: An error management system and process can be used to identify an erroneous data packet in a data stream. In response to identifying the erroneous data packet, a subsequent valid data packet is located in the data stream. In one embodiment, a plurality of candidate locations of header checksum windows are searched and checked for a valid checksum. Multiple integrity checks of multiple header checksums can be used to reduce the probability of a false positive integrity check. In another embodiment, one or more information data fields can used for determining packet integrity by determining if the fields contain valid information bits.
    Type: Application
    Filed: June 29, 2006
    Publication date: January 3, 2008
    Inventors: Yair Bourlas, Brian D. Petry, Peter J. Graumann, Kripps Asirvatham, Doraid Y. Sadiq, Karle J. Johnson, Kenneth L. Stanwood
  • Patent number: 7139312
    Abstract: A method for improving gain performance of a Viterbi decoder wherein data relating to the best path and a secondary path are stored for the Viterbi decoder. Slicer errors are determined for the best path and the secondary path for current symbols using the stored data and errors for previous symbols are corrected responsive to the determined slicer errors.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: November 21, 2006
    Assignee: STMicroelectronics, Inc.
    Inventor: Peter J. Graumann
  • Publication number: 20030219083
    Abstract: A method for improving gain performance of a Viterbi decoder wherein data relating to the best path and a secondary path are stored for the Viterbi decoder. Slicer errors are determined for the best path and the secondary path for current symbols using the stored data and errors for previous symbols are corrected responsive to the determined slicer errors.
    Type: Application
    Filed: May 23, 2002
    Publication date: November 27, 2003
    Applicant: STMicroelectronics, Inc.
    Inventor: Peter J. Graumann