Patents by Inventor Dhananjay Gore

Dhananjay Gore 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: 20120026959
    Abstract: Provided is a more efficient manner of transmitting a control message to reach into a neighboring sector (e.g., inter-sector) of a wireless network environment. The control message can be utilized for purposes such as handoff, indicating an amount of interference, inter-sector power control for managing inter-sector interference, sector loading, or other control messages. The control message can be placed on a set of resources utilizing planned reuse and/or statistical reuse. Statistical reuse includes selecting a subcarrier set for carrying the control message. According to some aspects, the control message can be sent over a backhaul channel.
    Type: Application
    Filed: October 4, 2011
    Publication date: February 2, 2012
    Applicant: QUALCOMM Incorporated
    Inventors: David Julian, Dhananjay Gore
  • Patent number: 8060099
    Abstract: Provided is a more efficient manner of transmitting a control message to reach into a neighboring sector (e.g., inter-sector) of a wireless network environment. The control message can be utilized for purposes such as handoff, indicating an amount of interference, inter-sector power control for managing inter-sector interference, sector loading, or other control messages. The control message can be placed on a set of resources utilizing planned reuse and/or statistical reuse. Statistical reuse includes selecting a subcarrier set for carrying the control message. According to some aspects, the control message can be sent over a backhaul channel.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: November 15, 2011
    Assignee: QUALCOMM Incorporated
    Inventors: David Julian, Dhananjay Gore
  • Patent number: 8045988
    Abstract: Transmission patterns for pilot symbols transmitted from a mobile station or base station are provided. The patterns may be selected according to a location of the mobile station with respect to one or more antennas are provided. In some aspects, the pattern may be selected based upon the distance between the mobile station and the one or more antennas. In other aspect, the pattern may be based upon whether the mobile station is in handoff.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: October 25, 2011
    Assignee: QUALCOMM Incorporated
    Inventors: Arak Sutivong, Ayman Fawzy Naguib, Dhananjay Gore, Alexei Gorokhov, Tingfang Ji
  • Publication number: 20110059699
    Abstract: A selected rate is received for an apparatus based on a hypothesized signal-to-noise-and-interference ratio (SINR) for the apparatus, and characterized statistics of noise and interference observed at a receiver for the apparatus. Data are processed in accordance with the rate selected for the apparatus.
    Type: Application
    Filed: July 21, 2010
    Publication date: March 10, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Ayman Fawzy Naguib, Alexei Gorokhov, Tingfang Ji, Dhananjay A. Gore, Arak Sutivong
  • Publication number: 20110019559
    Abstract: A method for stabilizing forward link multiple-input and multiple-output (MIMO) rate prediction is described. The forward link channel quality is measured. Instantaneous channel quality estimates are determined for each instantaneous rank. Each instantaneous channel quality estimate provides an instantaneous rate estimate for the instantaneous rank. Rank defines the number of forward link transmission streams and rate defines the total capacity of the forward link for each rank. The instantaneous rates are filtered to determine an average rate per rank. A maximum rate is selected as the maximum over the determined average rate per rank. The instantaneous rank corresponding to the maximum rate is selected as the optimal rank. The instantaneous rate corresponding to the optimal rank is selected as the optimal rate. The optimal rank and optimal rate are then sent to an access point.
    Type: Application
    Filed: July 27, 2009
    Publication date: January 27, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Dhananjay A. Gore, Gwendolyn D. Barriac, Edward Harris Teague
  • Publication number: 20100330946
    Abstract: Systems and methodologies are described that facilitate combining received signals from multiple receive antennas in a wireless communication environment. The received signals from the multiple receive antennas can be weighted utilizing an adaptive combination of maximal ratio combining (MRC) and interference nulling. The combination of MRC and interference nulling can be controlled based upon one or more configurable parameters. For instance, a covariance matrix can be modified to include the one or more configurable parameters, and the modified covariance matrix can be utilized in connection with interference nulling. Further, respective values for the one or more configurable parameters can be selected as a function of at least one input (e.g., measured interference-over-thermal (IoT) value, received loading level indicator, eigenvalue distribution of a covariance matrix, . . . ) related to noise correlation.
    Type: Application
    Filed: June 24, 2009
    Publication date: December 30, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Sony J. Akkarakaran, Alexei Y. Gorokhov, Dhananjay A. Gore
  • Publication number: 20100329310
    Abstract: Methods and apparatuses are disclosed that utilize the discrete Fourier transform of time domain responses to generate beamforming weights for wireless communication. In addition, in some embodiments frequency subcarriers constituting less than all of the frequency subcarriers allocated for communication to a user may utilized for generating the beamforming weights.
    Type: Application
    Filed: September 9, 2010
    Publication date: December 30, 2010
    Applicant: QUALCOMM INCORPORATED
    Inventors: Tingfang Ji, Ayman Fawzy Naguib, Arak Sutivong, Dhananjay Gore, Alexei Gorokhov, Hemanth Sampath, Min Dong
  • Patent number: 7826489
    Abstract: The present disclosure provides a method and apparatus of channel estimation for a wireless communication system. Dedicated pilot symbols transmitted over at least one time-frequency region for at least one user are received. Channel parameters are estimated for the at least one time-frequency region based on the received dedicated pilot symbols.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: November 2, 2010
    Assignee: QUALCOMM Incorporated
    Inventors: Petru Cristian Buidanu, Alexei Gorokhov, Dhananjay A. Gore
  • Publication number: 20100254354
    Abstract: Transmission patterns for pilot symbols transmitted from a mobile station or base station are provided. The patterns may be selected according to a location of the mobile station with respect to one or more antennas are provided. In some aspects, the pattern may be selected based upon the distance between the mobile station and the one or more antennas. In other aspect, the pattern may be based upon whether the mobile station is in handoff.
    Type: Application
    Filed: June 17, 2010
    Publication date: October 7, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Arak Sutivong, Ayman Fawzy Naguib, Dhananjay Gore, Alexei Gorokhov, Tingfang Ji
  • Patent number: 7809336
    Abstract: To select a rate for a transmitter in a communication system, a receiver obtains a channel response estimate and a received SINR estimate for the transmitter, e.g., based on a pilot received from the transmitter. The receiver computes a hypothesized SINR for the transmitter based on the channel response estimate and the received SINR estimate. The receiver then selects a rate for the transmitter based on (1) the hypothesized SINR and (2) characterized statistics of noise and interference at the receiver for the transmitter, which may be given by a probability density function (PDF) of SINR loss with respect to the hypothesized SINR. A look-up table of rate versus hypothesized SINR may be generated a priori for the PDF of SINR loss. The receiver may then apply the hypothesized SINR for the transmitter to the look-up table, which then provides the rate for the transmitter.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: October 5, 2010
    Assignee: Qualcomm Incorporated
    Inventors: Ayman Fawzy Naguib, Alexei Gorokhov, Tingfang Ji, Dhananjay Gore, Arak Sutivong
  • Patent number: 7768979
    Abstract: Transmission patterns for pilot symbols transmitted from a mobile station or base station are provided. The patterns may be selected according to a location of the mobile station with respect to one or more antennas are provided. In some aspects, the pattern may be selected based upon the distance between the mobile station and the one or more antennas. In other aspect, the pattern may be based upon whether the mobile station is in handoff.
    Type: Grant
    Filed: May 18, 2005
    Date of Patent: August 3, 2010
    Assignee: QUALCOMM Incorporated
    Inventors: Arak Sutivong, Ayman Fawzy Naguib, Dhananjay Gore, Alexei Gorokhov, Tingfang Ji
  • Publication number: 20100056123
    Abstract: Provided is a more efficient manner of transmitting a control message to reach into a neighboring sector (e.g., inter-sector) of a wireless network environment. The control message can be utilized for purposes such as handoff, indicating an amount of interference, inter-sector power control for managing inter-sector interference, sector loading, or other control messages. The control message can be placed on a set of resources utilizing planned reuse and/or statistical reuse. Statistical reuse includes selecting a subcarrier set for carrying the control message. According to some aspects, the control message can be sent over a backhaul channel.
    Type: Application
    Filed: August 27, 2008
    Publication date: March 4, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: David Julian, Dhananjay Gore
  • Publication number: 20090310526
    Abstract: Systems and methods for communicating with multiple receivers simultaneously are disclosed. In one embodiment, the method comprises applying a first adjustment to a first signal based on a first propagation path delay between a transmitter and a first receiver, combining the adjusted first signal and a second signal, and transmitting a composite signal based on the combined signal substantially concurrently to the first receiver and a second receiver.
    Type: Application
    Filed: June 10, 2009
    Publication date: December 17, 2009
    Applicant: QUALCOMM Incorporated
    Inventors: Dhananjay A. Gore, Edward H. Teague
  • Publication number: 20090290661
    Abstract: Techniques for sending and receiving signaling messages in a control segment are described. The control segment may be sent with CDM in multiple OFDM symbols. At a receiver, a received sequence is obtained for the control segment. A time-domain signaling sequence is generated based on a signaling message hypothesized to have been sent in the control segment. A correlating sequence is generated based on the signaling sequence. In one design, the signaling sequence is partitioned into multiple sub-sequences, one sub-sequence for each symbol period in which the control segment was sent. Each sub-sequence is cyclically shifted by an amount determined by a channel tap delay. The correlating sequence is then formed by concatenating all of the cyclically shifted sub-sequences. The correlating sequence may also be generated in other manners. The received sequence is correlated with the correlating sequence to determine whether the signaling message was sent in the control segment.
    Type: Application
    Filed: May 20, 2008
    Publication date: November 26, 2009
    Applicant: QUALCOMM Incorporated
    Inventors: Gwendolyn D. Barriac, Dhananjay A. Gore, Alexei Gorokhov
  • Patent number: 7554948
    Abstract: To receive packets with interference cancellation, block transmissions for the packets are received on time-frequency blocks used by these packets. Receiver spatial processing is performed on input symbols to obtain detected symbols. Each packet is demodulated and decoded based on all detected symbols obtained for all block transmissions received for the packet. For each packet that is decoded correctly, the transmission for the packet is terminated, the interference due to the packet is estimated, and the estimated interference is subtracted from the input symbols for all time-frequency blocks used by the packet. Receiver spatial processing is performed on the interference-canceled symbols to obtain new detected symbols for all time-frequency blocks used by all correctly decoded packets. Each packet decoded in error and overlapping at least partially with any correctly decoded packet may be demodulated and decoded based on all detected symbols available for that packet.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: June 30, 2009
    Assignee: QUALCOMM, Incorporated
    Inventors: Ayman Fawzy Naguib, Alexei Gorokhov, Dhananjay Gore, Tingfang Ji, Arak Sutivong
  • Patent number: 7512412
    Abstract: Techniques for controlling transmit power and the amount of overlapping in a quasi-orthogonal system are described. A base station for a sector receives transmissions from terminals in that sector and neighbor sectors and determines performance metrics (e.g., overall throughput) and/or QoS metrics (e.g., minimum data rate) for the terminals in the sector. The base station updates an overlapping factor based on the performance metrics and updates a QoS power control parameter based on the QoS metrics. The overlapping factor indicates the average number of overlapping transmissions sent simultaneously on each time-frequency block usable for data transmission. The QoS power control parameter ensures that the terminals in the sector can achieve minimum QoS requirements. A power control mechanism with multiple loops is used to adjust the transmit power of each terminal. The overlapping factor and QoS power control parameter are updated by two of the loops.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: March 31, 2009
    Assignee: QUALCOMM, Incorporated
    Inventors: Murat Mese, Ayman Fawzy Naguib, Arak Sutivong, Dhananjay Gore, Alexei Gorokhov, Tingfang Ji
  • Publication number: 20090080508
    Abstract: Systems and methodologies are described that facilitate equalization of received signals in a wireless communication environment. Using multiple transmit and/or receive antennas and MIMO technology, multiple data streams can be transmitted within a single tone. During equalization, receivers can separate data received within a tone into individual data streams. The equalization process generally is computationally expensive. Equalizer functions include the inverse operation, which can be computed using the fast square root method; however, the fast square root method involves large numbers of computations for a set of matrices, where the size of a matrix in the set of matrices increases with the number of transmit or receive antennas. Utilizing a modification of the fast square root method, a subset of the elements of the matrices can be selected and updated to reduce the number and/or complexity of computations.
    Type: Application
    Filed: October 7, 2008
    Publication date: March 26, 2009
    Applicant: QUALCOMM Incorporated
    Inventors: Dhananjay A. Gore, Hemanth Sampath, Edward Harrison Teague
  • Publication number: 20080232484
    Abstract: The present disclosure provides a method and apparatus of channel estimation for a wireless communication system. Dedicated pilot symbols transmitted over at least one time-frequency region for at least one user are received. Channel parameters are estimated for the at least one time-frequency region based on the received dedicated pilot symbols.
    Type: Application
    Filed: March 23, 2007
    Publication date: September 25, 2008
    Applicant: QUALCOMM Incorporated
    Inventors: Petru Cristian Budianu, Alexei Gorokhov, Dhananjay A. Gore
  • Publication number: 20080235311
    Abstract: Systems and methodologies are described that facilitate equalization of received signals in a wireless communication environment. Multiple transmit and/or receive antennas and utilize MIMO technology to enhance performance. A single tile of transmitted data, including a set of modulation symbols, can be received at multiple receive antennas, resulting in multiple tiles of received modulation symbols. Corresponding modulation symbols from multiple received tiles can be processed as a function of channel and interference estimates to generate a single equalized modulation symbol. Typically, the equalization process is computationally expensive. However, the channels are highly correlated. This correlation is reflected in the channel estimates and can be utilized to reduce complex equalization operations. In particular, a subset of the equalizers can be generated based upon the equalizer function and the remainder can be generated using interpolation. In addition, the equalizer function itself can be simplified.
    Type: Application
    Filed: March 20, 2008
    Publication date: September 25, 2008
    Applicant: QUALCOMM INCORPORATED
    Inventors: Petru Cristian Budianu, Hemanth Sampath, Alexei Gorokhov, Dhananjay A. Gore
  • Publication number: 20080165891
    Abstract: Techniques for transmitting pilot and for processing received pilot to obtain channel and interference estimates are described. A terminal may generate pilot symbols for a first cluster in a time frequency block based on a first sequence and may generate pilot symbols for a second cluster in the time frequency block based on a second sequence. The first and second sequences may include common elements arranged in different orders and may be considered as different versions of a single sequence. The terminal may transmit the pilot symbols in their respective clusters. A base station may obtain received pilot symbols from multiple clusters in the time frequency block. The base station may form each of multiple basis vectors with multiple versions of the sequence assigned to the terminal and may process the received pilot symbols with the multiple basis vectors to obtain a channel estimate for the terminal.
    Type: Application
    Filed: March 26, 2007
    Publication date: July 10, 2008
    Applicant: QUALCOMM Incorporated
    Inventors: Petru Cristian Budianu, Dhananjay A. Gore, Alexei Gorokhov