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).

  • Publication number: 20120281593
    Abstract: A broadband cellular network (BCN) provides a user equipment (UE) access to TVWS resources. The BCN authorizes the UE to access TVWS resources by conveying a mobile device identifier received from the UE, and a cell identifier associated with the UE's coverage area, to a Federal Communications Commission (FCC)-certified Database and receiving, from the Database, and storing an FCC ID associated with the UE and a set of available TVWS resources. The BCN then conveys, to the UE via a broadband cellular technology, a channel resource information element (CRIE) that includes the cell identifier and identifies the set of available TVWS resources. Subsequently, the BCN re-authorizes the UE to access TVWS resources based on the stored FCC ID and without re-conveying the mobile device identifier to the Database. The BCN further utilizes broadband cellular technology procedures to provide a “virtual” contact verification signal (VCVS) to the UE.
    Type: Application
    Filed: May 4, 2011
    Publication date: November 8, 2012
    Applicant: MOTOROLA MOBILITY, INC.
    Inventors: Kenneth A. Stewart, Colin D. Frank, Sandeep H. Krishnamurthy, Ravi Kuchibhotla, Robert T. Love, Ajit Nimbalker, Ravikiran Nory
  • Publication number: 20120284785
    Abstract: A method for facilitating access to a first access network (110) of a wireless communication system (100) comprises authenticating (300) a wireless communication device (102) with a second access network (104) and generating temporary access credentials using access information provided by the second access network (104). The wireless communication device (102) then transforms (302) the temporary access credentials and an identifier of the first access network (110) to provide first transformed access credentials which are transmitted (304) for performing authentication with the first access network (110). The identifier of the first access network (110) is provided to the second access network (104) which generates (308) second transformed access credentials using the identifier of the first access network (110) and the temporary access credentials.
    Type: Application
    Filed: May 5, 2011
    Publication date: November 8, 2012
    Applicant: MOTOROLA MOBILITY, INC.
    Inventors: Apostolis K. Salkintzis, Kenneth A. Stewart
  • Patent number: 8300658
    Abstract: Various methods and apparatuses provide unicast channel data acquisition, such as antenna information, from MBMS subframes. A method of operating a wireless communications network infrastructure entity is disclosed comprising defining a subframe (400) comprising a unicast symbol (401) in a predetermined first symbol position within said subframe (400), said unicast symbol (401) comprising at least a first unicast antenna reference symbol; defining a second symbol position (403) within said subframe (400) for containing at least a second unicast antenna reference symbol, said second symbol position (403) being a multicast symbol position for transmitting a multicast symbol; and transmitting said subframe (400) wherein said unicast symbol (401) comprises said at least first unicast antenna reference symbol and wherein said multicast symbol (403) comprises said at least second unicast antenna reference symbol.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: October 30, 2012
    Assignee: Motorola Mobility LLC
    Inventors: Michael E. Buckley, Brian K. Classon, Kenneth A. Stewart
  • Patent number: 8295248
    Abstract: A method for scheduling a wireless communication entity based on channel quality information provided by the wireless entity, wherein scheduling is discontinued if channel quality information is not received from the wireless communication entity over a specified number of frames or if the channel quality information provided is insufficient to support a control channel. The wireless communication entity may discontinue reporting channel quality information if the channel quality measured over a specified number of frames is below a threshold. Scheduling may be discontinued by blocking, removing or preempting the scheduling of the wireless entity.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: October 23, 2012
    Assignee: Motorola Mobility LLC
    Inventors: Ravi Kuchibhotla, Brian K Classon, Robert T Love, Ravikiran Nory, Kenneth A Stewart, Yakun Sun
  • Publication number: 20120263118
    Abstract: In a method for scheduling resources, the method includes receiving a first control channel in a first subframe (426) as a part of wireless communication between a user equipment (102) and a network equipment (110) using a first type of radio access technology wherein the first control channel (408) includes a first scheduling grant for scheduling resources in a second subframe (424) using a second type of radio access technology. The method also includes receiving a second control channel in the first subframe using the first type of radio access technology wherein the second control channel includes a second scheduling grant for the scheduling resources in the first subframe using the first type of radio access technology.
    Type: Application
    Filed: April 13, 2011
    Publication date: October 18, 2012
    Applicant: Motorola Mobility, Inc.
    Inventors: Robert T. Love, Ajit Nimbalker, Ravikiran Nory, Kenneth A. Stewart
  • Publication number: 20120263047
    Abstract: In a method of detecting a transmission bandwidth configuration, the method includes monitoring (610) a first set of control channel candidates in a subframe (424) using a first transmission bandwidth and includes monitoring (612) a second set of control channel candidates using a second transmission bandwidth. The method also includes detecting (614) a control channel (428) in one of the first set of control channel candidates and the second set of control channel candidates and includes determining (616) a transmission bandwidth (421, 423) configuration for the subframe based on the detected control channel of one of the first set of control candidates and the second set of control channel candidates.
    Type: Application
    Filed: April 13, 2011
    Publication date: October 18, 2012
    Applicant: Motorola Mobility, Inc.
    Inventors: Robert T. Love, Ajit Nimbalker, Ravikiran Nory, Kenneth A. Stewart
  • Publication number: 20120263117
    Abstract: In a method of scheduling, a subframe (426) is communicated between a user equipment (102) and network equipment (110) wherein the subframe has a first transmission bandwidth configuration. The transmission bandwidth configuration includes a plurality of resource blocks and it least one of the resource blocks is configured as a control region (408). The control region includes an indicator that is used for scheduling a subsequent subframe (424). The method also uses the indicator to determine a transmission bandwidth of a second transmission bandwidth configuration for the subsequent subframe (421, 423). The second transmission bandwidth configuration can be adjusted by adjusting the power level of the resource blocks in the control region. In addition, The second transmission bandwidth configuration can be adjusted for a plurality of subsequent subframes.
    Type: Application
    Filed: April 13, 2011
    Publication date: October 18, 2012
    Applicant: Motorola Mobility, Inc.
    Inventors: Robert T. Love, Ajit Nimbalker, Ravikiran Nory, Kenneth A. Stewart, Ravi Kuchibhotla
  • Publication number: 20120257519
    Abstract: A method and apparatus for a co-scheduler can mitigate UE-to-UE adjacent carrier frequency band interference by allocating three sets to a first user equipment uplink. Each set has at least one sub-carrier in a first frequency band, at least one uplink time period, and at least one transmission power parameter. The co-scheduler initially allocates the first set. The co-scheduler allocates the second set in response to detecting a second user equipment operating proximal to the first user equipment, and the second set differs from the first set in either at least one sub-carrier or at least one transmission power parameter. The co-scheduler allocates the third set in response to detecting that the second user equipment is no longer operating proximal to the first user equipment, and the third set differs from the second set in either at least one sub-carrier or at least one transmission power parameter.
    Type: Application
    Filed: April 8, 2011
    Publication date: October 11, 2012
    Applicant: Motorola Mobility, Inc.
    Inventors: Colin D. Frank, Sandeep H. Krishnamurthy, Robert T. Love, Ajit Nimbalker, Ravikiran Nory, Kenneth A. Stewart
  • Patent number: 8279811
    Abstract: A wireless communication system includes 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 a 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 a downlink feedback resource to the second wireless terminal is indicated by a corresponding resource assignment. The scheduling entity indicates a cyclic shift that the first wireless terminal should use for its reference signal transmission using the reference signal cyclic shift indicator.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: October 2, 2012
    Assignee: Motorola Mobility LLC
    Inventors: Robert T. Love, Ravi Kuchibhotla, Vijay Nangia, Rapeepat Ratasuk, Kenneth A. Stewart
  • Publication number: 20120246548
    Abstract: A wireless communication device includes a transmitter configured to transmit a transport block with a sequence of bits wherein A is the number of bits, a first CRC coder configured to generate a first block of CRC parity bits on a transport block and to associates the first block of CRC parity bits with the transport block, wherein a number of CRC parity bits in the first block is L, a segmenting entity configured to segment the transport block into multiple code blocks after associating when A+L is larger than 6144, a second CRC coder configured to generate a second block of CRC parity bits on each code block and to associate a second block of CRC parity bits with each code block, and a channel encoder configured to encode each of the code blocks including the associated second block of CRC parity bits if A+L>6144.
    Type: Application
    Filed: May 10, 2012
    Publication date: September 27, 2012
    Applicant: MOTOROLA MOBILITY, INC.
    Inventors: MICHAEL E. BUCKLEY, YUFEI W. BLANKENSHIP, BRIAN K. CLASSON, AJIT NIMBALKER, KENNETH A. STEWART
  • Publication number: 20120236736
    Abstract: A method (500) and apparatus for multi-radio coexistence has a victim user equipment (UE) that receives (515) a sequence of subframes at a first transceiver from a serving base station, measures (520) channel state on the subframes to obtain channel state measurements, determines (530) a high-low interference pattern based on the channel state measurements, and transmits (550) to the serving base station a report that includes an indicator related to the high-low interference pattern. The method can include the victim UE receiving (610) an aggressor reference waveform (ARW) from the second transceiver, determining (620) spatial characteristics of the second transceiver from the ARW, and configuring (630) its antenna system based on the spatial characteristics. The method can have the victim UE determining (640) second transceiver characteristics from the ARW and transmitting (650) information regarding the second transceiver characteristics to its serving base station.
    Type: Application
    Filed: March 18, 2011
    Publication date: September 20, 2012
    Applicant: MOTOROLA MOBILITY, INC.
    Inventors: Colin D. Frank, Sandeep H. Krishnamurthy, Robert T. Love, Ajit Nimbalker, Ravikiran Nory, Kenneth A. Stewart
  • Patent number: 8259825
    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: Grant
    Filed: August 8, 2008
    Date of Patent: September 4, 2012
    Assignee: Motorola Mobility, Inc.
    Inventors: Robert Love, Tyler Brown, Colin Frank, Jialing Liu, Ravi Nory, Krishna Kamal Sayana, Kenneth Stewart, Pallav Sudarshan, Xiangyang Zhuang
  • Publication number: 20120184327
    Abstract: A multimode wireless communication terminal that communicates using a first radio access technology (RAT) and a second RAT determines whether the first and second RATs are in an active state, and modifies a maximum transmit power limit of the first RAT based on a voice codec rate of a voice transmission on the second RAT when the first RAT and the second RAT are in the active state concurrently, wherein the second RAT is conducting the voice transmission in the active state. In an alternative embodiment, the limit is modified based on a transmit power status of the second RAT or on a transmission type of the first RAT.
    Type: Application
    Filed: January 13, 2011
    Publication date: July 19, 2012
    Applicant: MOTOROLA MOBILITY, INC.
    Inventors: Robert T. Love, Ravikiran Nory, Kenneth A. Stewart, Ravi Kuchibhotla
  • Publication number: 20120184265
    Abstract: A multimode wireless communication terminal that communicates using a first radio access technology (RAT) and a second RAT determines whether the first and second RATs are in an active state, and when the wireless communication terminal is transmitting on the first and second RATs concurrently, transmitting UCI on a PUSCH on the first RAT if there is a scheduled PUSCH transmission or an uplink scheduling grant indicating a periodic CSI reporting, wherein the UCI would otherwise be transmitted on a PUCCH when the wireless communication terminal is not transmitting using the second and the first RAT simultaneously and there is a scheduled PUSCH on the first RAT.
    Type: Application
    Filed: January 13, 2011
    Publication date: July 19, 2012
    Applicant: MOTOROLA MOBILITY, INC.
    Inventors: Robert T. Love, Ravikiran Nory, Kenneth A. Stewart, Ravi Kuchibhotla
  • Patent number: 8223737
    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: Grant
    Filed: June 12, 2008
    Date of Patent: July 17, 2012
    Assignee: Motorola Mobility, Inc.
    Inventors: Vijay Nangia, Kevin L. Baum, Brian K. Classon, Hyejung Jung, Robert T. Love, Kenneth A. Stewart
  • Publication number: 20120177012
    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: March 19, 2012
    Publication date: July 12, 2012
    Applicant: MOTOROLA MOBILITY, INC.
    Inventors: Michael Eoin Buckley, Robert Love, Kenneth Stewart
  • Publication number: 20120172081
    Abstract: A wireless communication entity schedulable in a wireless communication network includes a radio receiver that receives radio resource assignment information including a bandwidth allocation, and a controller communicably coupled to the power amplifier, wherein the controller varies an operational maximum power level of the schedulable wireless communication entity in accordance with a protocol state governing the schedulable wireless communication entity, wherein the operational maximum power level limits an instantaneous power at which the schedulable wireless communication entity may transmit on the radio resource assigned.
    Type: Application
    Filed: March 13, 2012
    Publication date: July 5, 2012
    Applicant: MOTOROLA MOBILITY, INC.
    Inventors: Robert T. Love, Brian K. Classon, Edgar P. Fernandes, Armin W. Klomsdorf, Vijay Nangia, Ravikiran Nory, Dale G. Schwent, Kenneth A. Stewart, David R. Wilson
  • Publication number: 20120170541
    Abstract: A wireless user terminal includes a controller communicably coupled to a transceiver. The controller is configured to determine scheduling grant information and additional scheduling grant information from a channel encoded scheduling grant received at the transceiver, wherein the channel encoded scheduling grant includes encoded parity bits combined with the scheduling grant information and the encoded parity bits include the additional scheduling grant information exclusive OR-ed with parity bits obtained from the scheduling grant information.
    Type: Application
    Filed: March 12, 2012
    Publication date: July 5, 2012
    Applicant: MOTOROLA MOBILITY, INC.
    Inventors: Robert T. Love, Ravi Kuchibhotla, Vijay Nangia, Ajit Nimbalker, Kenneth A. Stewart
  • Publication number: 20120172080
    Abstract: A wireless communication entity schedulable in a wireless communication network include a radio receiver that receives radio resource assignment information including a bandwidth allocation, a controller communicably coupled to the power amplifier, wherein the controller varies an operational maximum power level of the schedulable wireless communication entity based on whether the schedulable wireless communication entity is communicating time-critical traffic or non-time-critical traffic, and wherein the operational maximum power level limits an instantaneous power at which the schedulable wireless communication entity may transmit on the radio resource assigned.
    Type: Application
    Filed: March 13, 2012
    Publication date: July 5, 2012
    Applicant: MOTOROLA MOBILITY, INC.
    Inventors: Robert T. Love, Brian K. Classon, Edgar P. Fernandes, Armin W. Klomsdorf, Vijay Nangia, Ravikiran Nory, Dale G. Schwent, Kenneth A. Stewart, David R. Wilson
  • Patent number: 8205143
    Abstract: A communication device is disclosed. The device is configured to generate a first block of first cyclic redundancy check (CRC) parity bits on a transport block wherein the first block of CRC parity bits is based on a first generator polynomial, to attach the first block of CRC parity bits to the transport block and to segment the transport block into multiple code blocks. The processor is also configured to generate a second block of CRC parity bits on each code block wherein each of the second blocks of CRC parity bits is based on a second generator polynomial that is different than the first generator polynomial. The first and second generator polynomials have a common degree. A second block of CRC parity bits is attached to each code block, and the code blocks are concatenated after channel encoding.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: June 19, 2012
    Assignee: Motorola Mobility, Inc.
    Inventors: Michael E. Buckley, Yufei W Blankenship, Brian K Classon, Ajit Nimbalker, Kenneth A Stewart