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: 20100329128
    Abstract: A method for scheduling a wireless communication entity (103) 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 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, or removing or preempting the scheduling of the wireless entity.
    Type: Application
    Filed: November 2, 2007
    Publication date: December 30, 2010
    Applicant: MOTOROLA, INC.
    Inventors: RAVI KUCHIBHOTLA, BRIAN K. CLASSON, ROBERT T. LOVE, RAVIKIRAN NORY, KENNETH A. STEWART, YAKUN SUN
  • Publication number: 20100331009
    Abstract: The present invention provides for wireless terminal and a method in a wireless terminal for use in a location determination approach using time of arrival estimates between the wireless terminal and a plurality of base stations in a cellular network. The method includes receiving assistance data from a serving base station for use in receiving a position reference signal used to determine a time of arrival of one or more respective position reference signals from the plurality of base stations relative to a time reference, wherein the assistance data includes a list of base stations, each base station included in the list to be one of used or excluded from use as part of the plurality of base stations for receiving the position reference signal and determining the time of arrival estimate for the received position reference signal.
    Type: Application
    Filed: June 26, 2009
    Publication date: December 30, 2010
    Applicant: MOTOROLA, INC.
    Inventors: Sandeep H. Krishnamurthy, Colin D. Frank, Kenneth A. Stewart
  • Publication number: 20100331030
    Abstract: A method in a wireless communication device including receiving control signaling from a base station in a control region of a downlink carrier spanning a first bandwidth, receiving a signaling message from the base station indicating a second bandwidth, receiving a first control message within the control region using a first Downlink Control Information (DCI) format size, the first DCI format size based on the first bandwidth, and receiving a second control message within the control region using a second DCI format size, the second DCI format size based on the second bandwidth, wherein the second bandwidth is distinct from the first bandwidth and the first and second control messages indicate downlink resource assignments for the downlink carrier.
    Type: Application
    Filed: April 26, 2010
    Publication date: December 30, 2010
    Applicant: MOTOROLA, INC.
    Inventors: Ravikiran Nory, Ravi Kuchibhotla, Jialing Liu, Robert T. Love, Ajit Nimbalker, Kenneth A. Stewart
  • Publication number: 20100322138
    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 transmitting a subframe (300) comprising a unicast symbol (301) in a first predetermined symbol position within said subframe (300), said unicast symbol (301) comprising a first antenna reference information; defining said first antenna reference information as a second antenna reference information; and transmitting a second subframe comprising a second unicast symbol in a second predetermined symbol position within said second subframe, said second unicast symbol comprising said second antenna reference information.
    Type: Application
    Filed: August 27, 2010
    Publication date: December 23, 2010
    Inventors: Michael E. Buckley, Brian K. Classon, Kenneth A. Stewart
  • Publication number: 20100317343
    Abstract: A wireless terminal receives signaling information, pertaining to a reference signal transmission in at least one specifically designated sub frame, the signaling information including a list, the list including base station identities. The terminal determines, from at least one of the base station identities in the list, the time-frequency resources associated with a reference signal transmission intended for observed time difference of arrival (OTDOA) measurements from a transmitting base station associated with said one base station identity. The time of arrival of a transmission from the transmitting base station, relative to reference timing, is measured. The wireless terminal can receive a command from a serving cell to start performing inter-frequency OTDOA measurement on a frequency layer containing reference signals, the frequency layer distinct from the serving frequency layer, the serving frequency layer not containing positioning reference signals.
    Type: Application
    Filed: June 10, 2010
    Publication date: December 16, 2010
    Applicant: Motorola, Inc.
    Inventors: Sandeep H. Krishnamurthy, Robert T. Love, Aljit Nimbalker, Kenneth A. Stewart, Xiangyang Zhuang
  • Patent number: 7853857
    Abstract: A wireless communication device including a first CRC coder that generates a first block of CRC parity bits on a transport block and associates the first block of CRC parity bits with the transport block, a segmenting entity that segments the transport block into multiple code blocks after associating, and a second coder that generates a second block of CRC parity bits on each code block and associates a second block of CRC parity bits with each code block. The first and second blocks of CRC parity bits are based on first and second generator polynomials.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: December 14, 2010
    Assignee: Motorola Mobility, Inc.
    Inventors: Michael E. Buckley, Yufei W. Blankenship, Brian K. Classon, Ajit Nimbalker, Kenneth A. Stewart
  • Patent number: 7852904
    Abstract: A method in a transmitter for data collision avoidance in an uncoordinated frequency hopping communication system is disclosed. The base station (104) first determines (304) that a first data set to be sent to a first device (105) and a second data set to be sent to a second device (107) are scheduled to be transmitted simultaneously on a first frequency of a frequency hop-set. The device then transmits (310) the first data set on the first frequency of the frequency hop-set. The base station delays (312) transmission of the second data set, and finally transmits (316) the second data set on a second frequency of a frequency hop-set.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: December 14, 2010
    Assignee: Motorola Mobility, Inc.
    Inventors: Greg R Black, Christopher N Kurby, Kenneth A Stewart
  • Publication number: 20100309891
    Abstract: A wireless communication device for receiving a frame corresponding to a transmission time interval, the frame having a control channel including at least two control channel elements and an embedded bit sequence, the location of which indicates a portion of the control channel used for radio resource assignment, wherein the portion of the control channel used for radio resource assignment may be less than the entire control channel of the frame having the embedded bit sequence, and wherein the at least two frames may use different portions of the control channel for radio resource assignment.
    Type: Application
    Filed: August 17, 2010
    Publication date: December 9, 2010
    Applicant: Motorola-Mobility, Inc.
    Inventors: Ravi KUCHIBHOTLA, Brian K. CLASSON, Robert T. LOVE, Ravikiran NORY, Kenneth A. STEWART, Yakun SUN, Michael E. BUCKLEY
  • Patent number: 7844265
    Abstract: Disclosed is a method for mobile assisted sleep mode to reduce current drain in packet based mobile systems. The method comprising the step of receiving (102) from a network a channel condition threshold. Then, monitoring (104) a channel condition while in sleep mode. Then exiting (110) sleep mode in response to the determination (108) that the monitored channel condition is greater than the channel condition threshold.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: November 30, 2010
    Assignee: Motorola Mobility, Inc.
    Inventors: Ravi Kuchibhotla, Raja S. Bachu, Robert T. Love, Ravikiran Nory, Kenneth A. Stewart
  • Publication number: 20100279621
    Abstract: A method (300) and apparatus (106) for transmitting information based on a relationship between a first channel and a second channel is disclosed. The method can include taking (302) a first channel measurement corresponding to a first antenna of a wireless terminal and taking (304) a second channel measurement corresponding to a second antenna of the wireless terminal. The method can include determining (306) a relationship between the first channel and the second channel based on the first channel measurement and based on the second channel measurement. The method can include transmitting (310) information related to an uplink transmission where the information can be based on the relationship.
    Type: Application
    Filed: April 30, 2009
    Publication date: November 4, 2010
    Applicant: Motorola, Inc.
    Inventors: Tyler BROWN, Colin Frank, Sandeep Krishnamurthy, Kenneth Stewart, Xiangyang Zhuang
  • Patent number: 7818632
    Abstract: A communications system for reducing bit errors in a received data sequence provides a method for generating candidate code-word sequences for evaluation by a CRC decoder. The system may determine a most-likely received sequence using the probable code-word list of candidate sequences. The number of candidate sequences may be reduced using computational complexity reduction methods. A communications device also provides a candidate sequence generator for use with a CRC decoder to determine a most-likely received sequence and to reduce bit errors in a received sequence.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: October 19, 2010
    Assignee: Motorola Mobility, Inc.
    Inventors: Raja S. Bachu, Michael E. Buckley, Kenneth A. Stewart, Clint S. Wilkins
  • Patent number: 7817534
    Abstract: A method and apparatus for interrupting a transmission of a multicast signal includes a common channel selector (106) coupled to a receiver (102) to receive common channel information (116) therefrom. A repetition value calculator (108) receives measurement occasion information (118) from the common channel selector (106) to calculate a repetition factor (120). A system frame number comparator (110) determines if a channel measurement occasion (128) should be performed based on the repetition factor (120), a common identifier (124) and a largest common channel transmission time interval (122). The method and apparatus further includes a measurement occasion generator (112) coupled to the system frame number comparator (110), wherein if a measurement occasion is to be performed, a measurement occasion command signal (126) is provided to the measurement occasion generator (112) and the measurement occasion generator generates the channel measurement occasion (128).
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: October 19, 2010
    Assignee: Motorola, Inc.
    Inventors: Richard C. Burbidge, Ravi Kuchibhotla, Padmaja Putcha, Kenneth A. Stewart
  • Publication number: 20100260154
    Abstract: A base station communicates a positioning reference signal (PRS) to wireless communication devices over a downlink in a wireless communication system by encoding a PRS into a first set of transmission resources, encoding other information into a second set of transmission resources, multiplexing the two sets of resources into a subframe such that the first set of resources is multiplexed into at least a portion of a first set of orthogonal frequency division multiplexed (OFDM) symbols based on an identifier associated with the base station and the second set of resources is multiplexed into a second set of OFDM symbols. Upon receiving the subframe, a wireless communication device determines which set of transmission resources contains the PRS based on the identifier associated with the base station that transmitted the subframe and processes the set of resources containing the PRS to estimate timing (e.g., time of arrival) information.
    Type: Application
    Filed: April 8, 2010
    Publication date: October 14, 2010
    Applicant: MOTOROLA, INC.
    Inventors: Colin D. Frank, Sandeep H. Krishnamurthy, Kenneth A. Stewart, Xiangyang Zhuang, Robert T. Love
  • Publication number: 20100238845
    Abstract: A method in a relay node operating in a time division duplex system wherein the relay node transmits downlink pilot timeslot information to a user terminal in a first temporal region of a special sub-frame, communicates with a base station during a second temporal region of the special sub-frame, the second temporal region is configured as a guard period for communications between the relay node and the user terminal, and configures a third temporal region of the special sub-frame.
    Type: Application
    Filed: March 17, 2009
    Publication date: September 23, 2010
    Applicant: MOTOROLA, INC.
    Inventors: Robert T. Love, Jialing Liu, Vijay Nangia, Ajit Nimbalker, Ravikiran Nory, Kenneth A. Stewart, Xiangyang Zhuang
  • Publication number: 20100232373
    Abstract: A wireless communication terminal including a controller coupled to a wireless transceiver wherein the transceiver is configured to receive a first control message on an anchor carrier, the first control message including a resource assignment for the anchor carrier. The transceiver is also configured to receive a second control message on the anchor carrier, the second control message associated with a set of component carriers, the set of component carriers are distinct from the anchor carrier. The controller determines a resource assignment for at least one component carrier in the set of component carriers using both the first and the second control messages.
    Type: Application
    Filed: March 16, 2009
    Publication date: September 16, 2010
    Applicant: MOTOROLA, INC.
    Inventors: Ravikiran Nory, Ravi Kuchibhotla, Robert T. Love, Vijay Nangia, Ajit Nimbalker, Kenneth A. Stewart, Xiangyang Zhuang
  • Patent number: 7796639
    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 transmitting a subframe (300) comprising a unicast symbol (301) in a first predetermined symbol position within said subframe (300), said unicast symbol (301) comprising a first antenna reference information; defining said first antenna reference information as a second antenna reference information; and transmitting a second subframe comprising a second unicast symbol in a second predetermined symbol position within said second subframe, said second unicast symbol comprising said second antenna reference information.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: September 14, 2010
    Assignee: Motorola Mobility, Inc.
    Inventors: Michael E. Buckley, Brian K. Classon, Kenneth A. Stewart
  • Publication number: 20100226274
    Abstract: A method and apparatus for interrupting a transmission of a multicast signal includes a common channel selector (106) coupled to a receiver (102) to receive common channel information (116) therefrom. A repetition value calculator (108) receives measurement occasion information (118) from the common channel selector (106) to calculate a repetition factor (120). A system frame number comparator (110) determines if a channel measurement occasion (128) should be performed based on the repetition factor (120), a common identifier (124) and a largest common channel transmission time interval (122). The method and apparatus further includes a measurement occasion generator (112) coupled to the system frame number comparator (110), wherein if a measurement occasion is to be performed, a measurement occasion command signal (126) is provided to the measurement occasion generator (112) and the measurement occasion generator generates the channel measurement occasion (128).
    Type: Application
    Filed: May 20, 2010
    Publication date: September 9, 2010
    Applicant: Motorola, Inc.
    Inventors: Richard C. Burbidge, Ravi Kuchibhotla, Padmaja Putcha, Kenneth A. Stewart
  • Patent number: 7778307
    Abstract: A wireless communication device for receiving a frame (200) corresponding to a transmission time interval, the frame having a control channel (210) including at least two control channel elements (212, 214) and an embedded bit sequence, the location of which indicates a portion of the control channel used for radio resource assignment, wherein the portion of the control channel used for radio resource assignment may be less than the entire control channel of the frame having the embedded bit sequence, and wherein the at least two frames may use different portions of the control channel for radio resource assignment.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: August 17, 2010
    Assignee: Motorola, Inc.
    Inventors: Ravi Kuchibhotla, Brian K. Classon, Robert T. Love, Ravikiran Nory, Kenneth A. Stewart, Yakun Sun, Michael E. Buckley
  • Publication number: 20100195566
    Abstract: A base station communicates a positioning reference signal (PRS) to wireless communication devices over a downlink in a wireless communication system by encoding a PRS into a first set of transmission resources, encoding other information into a second set of transmission resources, multiplexing the two sets of resources into a subframe such that the first set of resources is multiplexed into at least a portion of a first set of orthogonal frequency division multiplexed (OFDM) symbols based on an identifier associated with the base station and the second set of resources is multiplexed into a second set of OFDM symbols, and transmitting the subframe. Upon receiving the subframe, a wireless device determines which set of transmission resources contains the PRS based on the identifier associated with the base station that transmitted the subframe and processes the set of resources containing the PRS to estimate timing (e.g., time of arrival) information.
    Type: Application
    Filed: February 3, 2009
    Publication date: August 5, 2010
    Inventors: Sandeep H. Krishnamurthy, Robert T. Love, Ajit Nimbalker, Kenneth A. Stewart, Xiangyang Zhuang
  • Publication number: 20100172399
    Abstract: A method, a mobile system, and a user device for determining a delay spread are disclosed. A memory 306 may store a compound test value based on a multiburst history. The multiburst history may be a set of power delay profile decisions. A processor 304 may create a short power delay profile channel estimate and a long power delay profile channel estimate. The processor 304 may select a chosen power delay profile channel estimate based on the compound test value.
    Type: Application
    Filed: December 30, 2009
    Publication date: July 8, 2010
    Applicant: MOTOROLA, INC.
    Inventors: Sandeep KRISHNAMURTHY, Colin FRANK, Kenneth STEWART