Patents by Inventor Rashid Attar

Rashid Attar 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: 9686048
    Abstract: Disclosed are examples in which the acknowledgement channel is used for retransmitting a frame received with error. A receiver is configured to transmit an acknowledgment for a frame when the frame is decoded following receipt of the last Pilot Control Group (PCG) of the same frame. The transmitter is configured to receive the acknowledgment of an earlier frame during a subsequent frame, and not to retransmit the earlier frame. The two frames may be adjacent. During connection setup negotiation, the system can determine the values of ack_mask1 defining allowed times for the receiver to acknowledge successful decoding of the subsequent frame, and ack_mask2 defining allowed times for the receiver to acknowledge successful decoding of the earlier frame. The two mask values provide non-overlapping allowed times, so the receiver can acknowledge within the subsequent frame (1) successful decoding of the earlier frame, and (2) successful decoding of the subsequent frame.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: June 20, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Vikram Gupta, Rashid A. Attar, Yu-Cheun Jou, Ravindra Manohar Patwardhan
  • Patent number: 9055545
    Abstract: Techniques for improving the capacity of a wireless communications system using interference cancellation (IC). In an early decoding and IC aspect, a frame transmitted from a user to a base station may be decoded prior to the entire frame being received by the base station. The remaining portion of the frame may then be re-constructed at the base station prior to its reception, and cancelled from the receive signal to reduce the interference to frames received from other users. In a power control aspect for early decoding and IC, the power control target level at a local base station may be adjusted in response to successfully early decoding a frame, without affecting the overall outer loop power control operation. Further aspects include late decoding techniques for utilizing the IC of other users' signals to improve the probability of decoding a given user's frames, as well as techniques for traffic channel demodulation using channel re-estimation.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: June 9, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Peter J. Black, Christopher G. Lott, Rashid A. Attar, Yu-Cheun Jou, Jun Ma
  • Patent number: 8897762
    Abstract: The disclosure relates to managing applications configured for execution on a mobile device. An embodiment of the disclosure receives one or more network access requests from one or more applications executing on the mobile device, determines that the mobile device is operating in a background mode, suppresses transmission to a network of the one or more network access requests to a network based on the determination, and transmits a subset of the one or more network access requests upon transition out of the background mode.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: November 25, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: George Cherian, Rashid A. Attar, Donna Ghosh, Linhai He, Rashmi Keshava Iyengar, Christopher Lott
  • Patent number: 8897256
    Abstract: A method and apparatus providing broadcast content over a unicast channel. The method and apparatus may be configured to determine whether content received using a broadcast type format is to be transmitted using a unicast type format, and to map the content to a unicast reservation upon a determination that the content is to be transmitted using the unicast type format.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: November 25, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: George Cherian, Jiming Guo, Peerapol Tinnakornsrisuphap, Rashid A. Attar, Bongyong Song, Mingxi Fan, Ravindra M. Patwardhan
  • Patent number: 8854944
    Abstract: Disclosed are methods and apparatus for interference cancellation in a wireless communication system. In particular, the disclosed methods and apparatus provide for interference cancellation in a wireless device, including extending linear interference cancellation techniques, such as quasi-linear interference cancellation (QLIC), in the wireless device to a first orthogonal set, which may be a first quasi orthogonal function (QOF) set for a cdma2000 system to cancel interference from that set upon another desired QOF set. QLIC may also be extended to cancellation of signals from non-intended base stations as well. Accordingly, the present methods and apparatus afford reduced interference through QLIC by canceling signals due to either undesired QOF sets or non-intended base stations, which in turn results in an increase in forward link capacity.
    Type: Grant
    Filed: November 8, 2009
    Date of Patent: October 7, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Yu-Cheun Jou, Rashid A. Attar, Peter J. Black
  • Patent number: 8797911
    Abstract: A wireless communications power saving method and apparatus is provided. The method includes establishing a circular buffer configured to maintain a number of most recently encountered frame delay times and waiting a frame delay time after receiving a further frame before the station enters a power save state. Frame delay time is a period equal to a largest most recently encountered frame delay period in the circular buffer. The method further determines, at a station, a dormancy time based on a number of data frames received since the station transitioned from an inactive mode to an active mode, a packet transmission rate, and a data frame time interval representing time between data frames received at the station, and causes the station to switch to a further inactive mode if a next packet is not received within the dormancy time after receipt of a previous packet.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: August 5, 2014
    Assignee: Qualcomm Incorporated
    Inventors: Linhai He, Rashid A. Attar, Christopher G. Lott, Donna Ghosh, Chaitanya Mannemala, Sunit Bhatia, Sudheer Konda, Gopal Chillariga
  • Publication number: 20140213235
    Abstract: The various embodiments include a dual-SIM-dual-active (DSDA) device and methods for implementing robust transmit (Tx) processing to resolve radio frequency coexistence interference between two subscriptions operating on the DSDA device. The DSDA device may detect when one subscription (the “aggressor”) de-senses the other subscription (the “victim”) as a result of the aggressor's transmissions, and in response, implement robust Tx processing to mitigate the effects of de-sense on the victim.
    Type: Application
    Filed: September 11, 2013
    Publication date: July 31, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Huang LOU, Francis M. NGAI, Wenjun LI, Michael L. MCCLOUD, Amit MAHAJAN, Nate CHIZGI, Rashid ATTAR, Girishkumar PANCHAL, Jun HU, Prashanth AKULA, Vansh MAKH, Jittra JOOTAR, Divaydeep SIKRI, Mungal DHANDA, Erdogan DEDE, Narendra Varma GOTTIMUKKALA, Yingbo LI, Peter HUANG
  • Patent number: 8792407
    Abstract: A wireless communications power saving method and apparatus is provided. The method includes, when no reverse link traffic exists and no forward link traffic has been received for a predetermined amount of time, establishing, at a terminal, a reverse link transmission pilot signal duty cycle, and boosting overhead channel signal transmission power during ON slots and gating overhead channel and pilot signal transmission power during OFF slots. The design further includes estimating, at the terminal, an available data transmission rate, determining an actual data transmission rate, setting a terminal transmission duty cycle for a next period based on the estimated available data transmission rate, the actual data transmission rate, and a margin of error, and transmitting data from the terminal according to the terminal transmission duty cycle.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: July 29, 2014
    Assignee: Qualcomm Incorporated
    Inventors: Jun Hu, Donna Ghosh, Christopher G. Lott, Rashid A. Attar, Linhai He
  • Publication number: 20140187248
    Abstract: Techniques for improving the capacity of a wireless communications system using interference cancellation (IC). In an early decoding and IC aspect, a frame transmitted from a user to a base station may be decoded prior to the entire frame being received by the base station. The remaining portion of the frame may then be re-constructed at the base station prior to its reception, and cancelled from the receive signal to reduce the interference to frames received from other users. In a power control aspect for early decoding and IC, the power control target level at a local base station may be adjusted in response to successfully early decoding a frame, without affecting the overall outer loop power control operation. Further aspects include late decoding techniques for utilizing the IC of other users' signals to improve the probability of decoding a given user's frames, as well as techniques for traffic channel demodulation using channel re-estimation.
    Type: Application
    Filed: November 8, 2013
    Publication date: July 3, 2014
    Applicant: Qualcomm Incorporated
    Inventors: Peter J. Black, Christopher G. Lott, Rashid A. Attar, Yu-Cheun Jou, Jun Ma
  • Patent number: 8761713
    Abstract: Methods, apparatus and media for receiving emergency broadcast information in a broadcast-multicast service of a communication system. The methods, apparatus and media include scheduling a broadcast of emergency broadcast information in designated control channel cycles for designated subscriber stations. The control channel cycles are transmitted with the designated control channel cycles including the emergency broadcast information. Subscriber stations awake according to their designated control channel cycle and receive the transmission of their designated control channel cycle on a broadcast-multicast service. The subscriber station determines if emergency broadcast information is in the control channel cycle assigned to the subscriber station and responds accordingly.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: June 24, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Ramin Rezaiifar, Rashid A. Attar
  • Patent number: 8645501
    Abstract: Methods and apparatus for obtaining web content are disclosed. The method includes identifying resources identified by domain name references that a user may request, obtaining a status of at least one operating condition that affects operations of the communication device, fetching, in advance of the user requesting the content, network addresses of the resources so as to resolve the domain name references, and adapting a level of the fetching based upon the at least one operating condition. The network addresses of the resources are cached so as to generate cached network addresses, and if the user requests the content, the cached network addresses are utilized to access the resources associated with the content.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: February 4, 2014
    Assignee: Qualcomm Innovation Center, Inc.
    Inventors: Donna Ghosh, Mark Bapst, Christopher G. Lott, Rashid A. Attar, George Cherian, Linhai He, Dinesh K. Garg
  • Patent number: 8611305
    Abstract: Techniques for improving the capacity of a wireless communications system using interference cancellation (IC). In an early decoding and IC aspect, a frame transmitted from a user to a base station may be decoded prior to the entire frame being received by the base station. The remaining portion of the frame may then be re-constructed at the base station prior to its reception, and cancelled from the receive signal to reduce the interference to frames received from other users. In a power control aspect for early decoding and IC, the power control target level at a local base station may be adjusted in response to successfully early decoding a frame, without affecting the overall outer loop power control operation. Further aspects include late decoding techniques for utilizing the IC of other users' signals to improve the probability of decoding a given user's frames, as well as techniques for traffic channel demodulation using channel re-estimation.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: December 17, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Peter J. Black, Christopher G. Lott, Rashid A. Attar, Yu-Cheun Jou, Jun Ma
  • Patent number: 8594252
    Abstract: Techniques for improving the capacity of a wireless communications system using interference cancellation (IC). In an early decoding and IC aspect, a frame transmitted from a user to a base station may be decoded prior to the entire frame being received by the base station. The remaining portion of the frame may then be re-constructed at the base station prior to its reception, and cancelled from the receive signal to reduce the interference to frames received from other users. In a power control aspect for early decoding and IC, the power control target level at a local base station may be adjusted in response to successfully early decoding a frame, without affecting the overall outer loop power control operation. Further aspects include late decoding techniques for utilizing the IC of other users' signals to improve the probability of decoding a given user's frames, as well as techniques for traffic channel demodulation using channel re-estimation.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: November 26, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Peter J. Black, Christopher G. Lott, Rashid A. Attar, Yu-Cheun Jou, Jun Ma
  • Publication number: 20130225145
    Abstract: The disclosure relates to managing applications configured for execution on a mobile device. An embodiment of the disclosure receives one or more network access requests from one or more applications executing on the mobile device, determines that the mobile device is operating in a background mode, suppresses transmission to a network of the one or more network access requests to a network based on the determination, and transmits a subset of the one or more network access requests upon transition out of the background mode.
    Type: Application
    Filed: February 28, 2012
    Publication date: August 29, 2013
    Applicant: QUALCOMM INCORPORATED
    Inventors: George Cherian, Rashid A. Attar, Donna Ghosh, Linhai He, Rashmi Keshava Iyengar, Christopher Lott
  • Publication number: 20130215812
    Abstract: A wireless communications power saving method and apparatus is provided. The method includes, when no reverse link traffic exists and no forward link traffic has been received for a predetermined amount of time, establishing, at a terminal, a reverse link transmission pilot signal duty cycle, and boosting overhead channel signal transmission power during ON slots and gating overhead channel and pilot signal transmission power during OFF slots. The design further includes estimating, at the terminal, an available data transmission rate, determining an actual data transmission rate, setting a terminal transmission duty cycle for a next period based on the estimated available data transmission rate, the actual data transmission rate, and a margin of error, and transmitting data from the terminal according to the terminal transmission duty cycle.
    Type: Application
    Filed: February 21, 2012
    Publication date: August 22, 2013
    Inventors: Jun Hu, Donna Ghosh, Christopher G. Lott, Rashid A. Attar, Linhai He
  • Publication number: 20130215788
    Abstract: A wireless communications power saving method and apparatus is provided. The method includes establishing a circular buffer configured to maintain a number of most recently encountered frame delay times and waiting a frame delay time after receiving a further frame before the station enters a power save state. Frame delay time is a period equal to a largest most recently encountered frame delay period in the circular buffer. The method further determines, at a station, a dormancy time based on a number of data frames received since the station transitioned from an inactive mode to an active mode, a packet transmission rate, and a data frame time interval representing time between data frames received at the station, and causes the station to switch to a further inactive mode if a next packet is not received within the dormancy time after receipt of a previous packet.
    Type: Application
    Filed: February 21, 2012
    Publication date: August 22, 2013
    Applicant: QUALCOMM INCORPORATED
    Inventors: Linhai He, Rashid A. Attar, Christopher G. Lott, Donna Ghosh, Chaitanya Mannemala, Sunit Bhatia, Sudheer Konda, Gopal Chillariga
  • Patent number: 8498308
    Abstract: In a high data rate communication system capable of variable rate transmission, an open loop rate control can be adjusted with a closed loop rate control to maximize throughput. An access point generates interleaved multi-slot packets that allow an access terminal to transmit indicator messages to the access point in accordance with recently received data carried within slots of the multi-slot packets.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: July 30, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Eduardo A. S. Esteves, Rashid A. Attar, Nagabhushana T. Sindhushayana
  • Patent number: 8463282
    Abstract: A method and apparatus for overload detection and control is disclosed. A base station may be in communication with one or more subscriber stations. Overload may be detected as a function of a plurality of parameters, each of which places a load on the base station. Both the type and degree of overload may be ascertained. Appropriate remedial measures may be implemented that are suitable to the type and degree of overload detected.
    Type: Grant
    Filed: December 3, 2003
    Date of Patent: June 11, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Rashid A. Attar, Bibhu P. Mohanty, Jack M. Holtzman, Jelena Damnjanovic
  • Patent number: 8416725
    Abstract: An apparatus and method for transmit power savings comprising determining a rate of a previous frame; determining if a current frame is an ALWAYS-ON frame, wherein the current frame temporally succeeds the previous frame; and either ignoring every other reverse link power control (RLPC) bits received on a forward power control subchannel (F-PCSCH) or applying every RLPC bits received on the F-PCSCH. In one aspect, the apparatus and method for transmit power savings comprising using a rate determination algorithm (RDA) to determine a rate of a previous frame; detecting a pilot gating pattern at the end of the previous frame; comparing the rate of the previous frame to a threshold; determining if a current frame is an ALWAYS-ON frame; and declaring the current frame to be a 0 bps frame and puncturing the F-PCSCH to a predetermined frequency.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: April 9, 2013
    Assignee: Qualcomm Incorporated
    Inventors: Yu-Cheun Jou, Rashid Attar, Mark Wallace, Qiang Wu, Jun Ma
  • Patent number: 8363604
    Abstract: A network entity includes a processor configured to regulate the data rate of transmissions over a wireless channel from a base station to a subscriber station based on feedback from the subscriber station, the feedback relating to the wireless channel conditions, the processor being further configured to determine a substitute data rate for one or more transmissions over the wireless channel.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: January 29, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Mehmet Gurelli, Mehmet Yavuz, Rashid A. Attar, Nagabhushana Sindhushayana, Rajesh K. Pankaj