Patents by Inventor Kenneth A. Stewart

Kenneth A. Stewart 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: 7730385
    Abstract: A wireless communication device employs a method for receiving a message stream on a control channel. According to one embodiment, the wireless communication device receives a message on the control channel. The wireless communication devices attempts to decode the message and, if the message is successfully decoded, adds bits of the successfully decoded message to a message attributes list. Some time thereafter, the wireless communication device attempts to decode a subsequent message received on the control channel and, if an error is detected during decoding of the subsequent message, replaces bits in the subsequent message with bits from the message attributes list to produce a modified message. The wireless device then attempts to decode the modified message.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: June 1, 2010
    Assignee: Motorola, Inc.
    Inventors: Jeffrey C. Smolinske, Michael E. Buckley, Kenneth A. Stewart
  • Publication number: 20100120442
    Abstract: A wireless communication relay terminal including a controller coupled to a transceiver wherein the controller is configured to cause the transceiver to transmit a first portion of a first sub-frame during a first time-frequency region to a wireless communication device, to cause the transceiver to receive, from a base station, a portion of a second sub-frame during a second time-frequency region wherein the first and second time-frequency regions are non-overlapping The controller is also configured to detect a control region within the portion of the second sub-frame received by attempting to decode information in a possible control region of the second sub-frame having at least one of several possible starting locations that are known a priori by the terminal.
    Type: Application
    Filed: November 12, 2008
    Publication date: May 13, 2010
    Applicant: MOTOROLA, INC.
    Inventors: XIANGYANG ZHUANG, ROBERT T. LOVE, VIJAY NANGIA, AJIT NIMBALKER, KENNETH A. STEWART
  • Publication number: 20100110964
    Abstract: A relay design backward compatible with existing wireless communication networks. The invention provides details of apparatus and methods to enable operation of inband relays. Using a grant-based inhibit mechanism, a Relay and an eNB can efficiently cooperate to improve the performance by allowing one of either UE or the Relay to transmit on the uplink. Similarly, the UE overrides any pre-determined schedule (i.e., absence of Reference Signals) by searching for a scheduling grant and if the UE find the scheduling grant, the UE can assume that the Relay has overridden the pre-determined schedule temporarily.
    Type: Application
    Filed: November 2, 2009
    Publication date: May 6, 2010
    Applicant: Motorola, Inc.
    Inventors: Robert T. Love, Ajit Nimbalker, Kenneth A. Stewart, Xiangyang Zhuang
  • Patent number: 7706249
    Abstract: A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted within a localized portion of a bandwidth of the OFDMA signal (818), the synchronization channel signal having predetermined time domain symmetry within the localized portion of the bandwidth (816). The synchronization channel signal enables an initial acquisition and cell search method with low computational load which provides OFDMA symbol timing detection and frequency error detection by differential processing of sequence elements of the synchronization channel signal (1112) and frame boundary detection and cell specific information detection (1114) in an OFDMA system supporting multiple system bandwidths, both synchronized and un-synchronized systems, a large cell index and an OFDMA symbol structure with both short and long cyclic prefix length.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: April 27, 2010
    Assignee: Motorola, Inc.
    Inventors: Hidenori Akita, Kevin L. Baum, Brian K. Classon, Masaya Fukuta, Hiroshi Hayashi, Vijay Nangia, Robert T. Love, Kenneth A. Stewart
  • Publication number: 20100096365
    Abstract: The hand-held electro-discharge machining fastener removal device of this invention brings an EDM electrode and its supporting ground pin and dielectric fluid structure to a fastener in a workpiece, such as an aircraft fuselage. The hand-held device brings the dielectric fluid, power supply, and control system structure to the fastener in a compact tool to permit EDM machining to be brought to large structures.
    Type: Application
    Filed: October 21, 2009
    Publication date: April 22, 2010
    Inventors: Kenneth Stewart Gold, Mervyn Rudgley, Michael Gibbons, James T. Legge, Richard K. Gerlach
  • Patent number: 7684799
    Abstract: A method for sleep mode during an impending handover is disclosed. The method comprises receiving (104) from a network a handover threshold value. Then once in sleep mode, monitoring (128) a channel condition of a handover candidate cell and determining that the handover threshold value of the handover candidate cell has been exceeded. After receiving a pending data indicator, remaining awake (134) to receive a data set associated with the pending data indicator. The network re-schedules (216) transmission of the data set to the mobile station.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: March 23, 2010
    Assignee: Motorola, Inc.
    Inventors: Ravi Kuchibhotla, Robert T. Love, Kenneth A. Stewart
  • Publication number: 20100034299
    Abstract: A method, a network base station, and a user communication device for transmitting data on an orthogonal frequency-division multiplexing carrier are disclosed. An antenna array may transmit a signal decodable by a legacy user communication device designed for compatibility with a legacy set of transmission antennas. A processor 210 may encode a subframe of the signal with a legacy set of common reference symbols and a supplemental set of common reference symbols referring to the antenna array.
    Type: Application
    Filed: August 8, 2008
    Publication date: February 11, 2010
    Applicant: Motorola, Inc.
    Inventors: Robert Love, Tyler Brown, Colin Frank, Jialing Liu, Ravi Nory, Krishna Kamal Sayana, Kenneth Stewart, Pallav Sudarshan, Xiangyang Zhuang
  • Publication number: 20100034139
    Abstract: A wireless communication infrastructure entity including a transceiver coupled to a controller configured to generate parity bits based on scheduling grant information and to encode the parity bits based on additional scheduling grant information not used to generate the parity bits, wherein the encoded parity bits combined with the scheduling grant information. The additional scheduling grant information may be transport block size or redundancy version information.
    Type: Application
    Filed: August 7, 2008
    Publication date: February 11, 2010
    Applicant: MOTOROLA INC
    Inventors: Robert T. Love, Ravi Kuchibhotla, Vijay Nangia, Ajit Nimbalker, Kenneth A. Stewart
  • Publication number: 20100034314
    Abstract: A wireless communication infrastructure entity including a transceiver communicably coupled to a controller configured to generate a handover message having a multi-bit field, the controller configured to set a value of the multi-bit field, the value of the multi-bit field jointly encoded to indicate both a transmission mode to be used after handover and an antenna configuration of a target
    Type: Application
    Filed: August 11, 2008
    Publication date: February 11, 2010
    Applicant: MOTOROLA INC
    Inventors: Tyler A Brown, Michael E. Buckley, Ravikiran Nory, Kenneth A. Stewart
  • Publication number: 20100029289
    Abstract: A wireless communication infrastructure entity in a wireless communication system implementing an uplink control channel using a narrowband frequency resource within a wideband frequency resource. The entity includes a controller communicably coupled to the transceiver wherein the controller is configured to cause the transceiver to signal a change of location for an uplink control channel within the wideband frequency resource. The uplink control channel includes at least a pair of uplink control channels separated within the wideband frequency resource and accommodates simultaneous uplink transmissions by multiple user equipment communicating in the wireless communication system.
    Type: Application
    Filed: July 31, 2008
    Publication date: February 4, 2010
    Inventors: Robert T. Love, Edgar P. Fernandes, Vijay Nangia, Dale G. Schwent, Kenneth A. Stewart, David R. Wilson
  • Publication number: 20100020716
    Abstract: A method in a wireless communication network (100) wherein information is communicated in a frame structure wherein each frame includes multiple sub-frames, including grouping at least two wireless communication terminals in a group, assigning the group to less than all sub-frames constituting a communication frame, and assigning a radio resource assignment control channel of one or more assigned sub-frames to the group. The control channel is used to assign radio resources to one or more terminals of the group.
    Type: Application
    Filed: October 6, 2009
    Publication date: January 28, 2010
    Applicant: MOTOROLA, INC.
    Inventors: Ravi Kuchibhotla, Robert T. Love, Kenneth A. Stewart
  • Publication number: 20090310589
    Abstract: Receiving units will switch between performing a DC bias suppression and not removing the DC distortion at the receiver depending on the amount of DC interference level observed/measured/estimated. Since the overall DC interference is from all uplink transmitters, potentially at different power levels, the amount of DC distortion can be measured based on the difference between the received power level and the expected power level on the DC sub-carrier. Additionally it can be estimated based on the number of active transmitters, their allocation bandwidth, power control target and/or a rough estimate of the DC distortion introduced by each active transmitter and also the distortion introduced by the receiver. Once this distortion level is estimated, a decision is then made whether or not to remove the DC distortion.
    Type: Application
    Filed: June 12, 2008
    Publication date: December 17, 2009
    Applicant: MOTOROLA, INC.
    Inventors: Vijay Nangia, Kevin L. Baum, Brian K. Classon, Hyejung Jung, Robert T. Love, Kenneth A. Stewart
  • Publication number: 20090280747
    Abstract: A mobile device estimates a data symbol from a received signal by using one or more interference cancellation algorithms. For one interference cancellation algorithm, the mobile device calculates a correction factor by estimating a Doppler speed and a time difference between a first time interval like a preamble symbol and a second time interval like any symbol of interest in an assigned data allocation in the data zone. Using the correction factor, the mobile device updates outdated interference information. The mobile device cancels interference in the received signal distorted by co-channel interference by using the updated interference information. Also, the mobile device is configured to combine results of multiple interference cancellation algorithms based on the applicability of the individual interference cancellation algorithms in particular scenarios.
    Type: Application
    Filed: May 7, 2008
    Publication date: November 12, 2009
    Applicant: Motorola, Inc.
    Inventors: Pallav Sudarshan, Kenneth A. Stewart, Xiangyang Zhuang
  • Patent number: 7616610
    Abstract: A method in a wireless communication network (100) wherein information is communicated in a frame structure wherein each frame includes multiple sub-frames, including grouping at least two wireless communication terminals in a group, assigning the group to less than all sub-frames constituting a communication frame, and assigning a radio resource assignment control channel of one or more assigned sub-frames to the group. The control channel is used to assign radio resources to one or more terminals of the group.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: November 10, 2009
    Assignee: Motorola, Inc.
    Inventors: Ravi Kuchibhotla, Brian K. Classon, Mark C. Cudak, Amitava Ghosh, Robert T. Love, Kenneth A. Stewart, Yakun Sun, Weimin Xiao
  • Publication number: 20090276684
    Abstract: A wireless communication infrastructure entity (200) having a communication configuration is configured to generate parity bits based on an information word and to encode the parity bits based on the communication configuration of the wireless communication infrastructure entity, wherein the encoded parity bits are combined with the information word. A wireless communication user terminal is configured to identify a set of configuration indicator bits used to encode parity bits combined with an information word and to determine a communication configuration of the wireless communication entity from which the combination of the information word and the encoded parity bits were received based on the set of configuration indicator bits used to encode the parity bits.
    Type: Application
    Filed: April 30, 2008
    Publication date: November 5, 2009
    Applicant: MOTOROLA INC.
    Inventors: KENNETH A. STEWART, TYLER A. BROWN, ROBERT T. LOVE
  • Publication number: 20090197542
    Abstract: A method, apparatus, and electronic device for creating a connection between a base station and user equipment are disclosed. A transceiver 202 may receive a physical downlink control channel signal containing a control message subjected to an encoding. A processor 204 may decode the control message. The processor 204 may determine a control channel element of the physical downlink control channel signal for the control message based in part upon the encoding.
    Type: Application
    Filed: February 5, 2008
    Publication date: August 6, 2009
    Applicant: Motorola, Inc.
    Inventors: Michael Eoin BUCKLEY, Robert Love, Kenneth Stewart
  • Publication number: 20090196260
    Abstract: A method signals a modulation scheme to user equipment on a control channel in a communication system. The method includes encoding the modulation scheme on a modulation specifier and encoding a number of channelization codes on a code group indicator. When the modulation scheme is other than quadrature phase shift keying with the user equipment being configured to support 64-quadrature amplitude modulation (64-QAM), then set the modulation specifier to indicate that the applied modulation scheme is other than QPSK, encode a code offset on a code offset indicator, and set one bit of the code offset indicator to indicate that the applied modulation scheme is 64-QAM. Finally, the method includes transmitting the modulation specifier, the code group indicator, and the code offset indicator on the control channel to the user equipment.
    Type: Application
    Filed: February 1, 2008
    Publication date: August 6, 2009
    Applicant: MOTOROLA, INC.
    Inventors: Kenneth A. Stewart, Raja S. Bachu, Jianzhong Zhang
  • Publication number: 20090175179
    Abstract: A method and apparatus for performing mobility measurement in a communication network (100) is described. The method comprises of receiving a subframe sequence pattern from a node in the communication network (100). The subframe sequence pattern indicates types of subframes being transmitted by a neighboring cell node (104) in a neighboring cell (112). The method includes receiving a subframe from a sequence of subframes transmitted by the neighboring cell node (104) in the neighboring cell (112), and determining that the received subframe is a multicast subframe based on the subframe sequence pattern. The method then includes performing a single cell-specific reference symbol measurement in response to determining that the received subframe is the multicast subframe.
    Type: Application
    Filed: January 4, 2008
    Publication date: July 9, 2009
    Applicant: MOTOROLA, INC.
    Inventors: KENNETH A. STEWART, JEAN-AICARD FABIEN, MICHAEL E. BUCKLEY, RAJA S. BACHU
  • Publication number: 20090168927
    Abstract: The present invention provides a broadcast channel signal, a wireless communication device and method for transmitting broadcast channel information, where an invariant subportion of a variant portion of the broadcast channel information is separated from the variant subportion of the variant portion and combined with the invariant portion, and encoded separately from the variant subportion. Both encoded portions are transmitted and decoded by a wireless communication device, which uses subsequent transmissions of the broadcast channel information to assist in the decoding in the event the broadcast channel information for a particular transmission frame of a transmission interval cannot be decoded.
    Type: Application
    Filed: December 31, 2007
    Publication date: July 2, 2009
    Applicant: MOTOROLA, INC.
    Inventors: RAJA S. BACHU, MICHAEL E. BUCKLEY, KENNETH A. STEWART
  • Publication number: 20090109906
    Abstract: A wireless communication system (100) including a scheduling entity that transmits scheduling messages to first and second wireless terminals having different scheduling characteristics, wherein each scheduling message includes a reference signal cyclic shift indicator and a resource assignment. The assignment of the downlink feedback resource to the first wireless terminal is indicated by the reference signal cyclic shift indicator in the corresponding scheduling message, and the assignment of the downlink feedback resource to the second wireless terminal is indicated by a corresponding resource assignment.
    Type: Application
    Filed: October 30, 2007
    Publication date: April 30, 2009
    Applicant: MOTOROLA INC
    Inventors: ROBERT T. LOVE, RAVI KUCHIBHOTLA, VIJAY NANGIA, RAPEEPAT RATASUK, KENNETH A. STEWART