Patents by Inventor Rashid Ahmed Attar

Rashid Ahmed 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: 9408165
    Abstract: Techniques to increase capacity in a wireless communications system. In an aspect, systematic non-transmission, or “blanking,” of minimal-rate frames transmitted in a communications system is provided. In an exemplary embodiment, eighth rate frames in a cdma2000 voice communications system are systematically substituted with null-rate frames carrying zero traffic bits. Provisions are nevertheless made for the transmission of certain designated as “critical” by, e.g., a vocoder. The receiver detects the presence of null rate or non-null rate transmissions and processes the received frames accordingly, including updating an outer loop power control only in response to non-null rate frames. Further techniques for changing the pilot transmission gating pattern to assist the receiver in detecting null rate frames are provided. In another aspect, early termination of a signal transmission over a wireless communications link is provided.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: August 2, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Yu-Cheun Jou, Peter J. Black, Rashid Ahmed A. Attar
  • Patent number: 9094979
    Abstract: Techniques for selecting a serving sector for a terminal based on server selection information in order to balance the load of sectors in a wireless communication system are described. The server selection information for each sector may be set based on the load of the sector and may be used to rank the sector for selection as a serving sector. In one design, a terminal may receive server selection information for multiple sectors. The server selection information for each sector may include an offset used to adjust a measurement made by the terminal for the sector, a priority of the sector for selection as a serving sector, a DRCLock set based on the load of the sector, etc. The terminal may determine received signal qualities of the sectors. The terminal may then select one of the sectors as a serving sector based on the server selection information and the received signal qualities of the sectors.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: July 28, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Ramin Rezaiifar, Rashid Ahmed A. Attar, Christopher G. Lott
  • Patent number: 9014152
    Abstract: Techniques to increase capacity in a wireless communications system. Systematic non-transmission, or “blanking,” of minimal-rate frames transmitted in a communications system is provided. In an exemplary embodiment, eighth rate frames in a cdma2000 voice communications system are systematically substituted with null-rate frames carrying zero traffic bits. The receiver detects the presence of null rate or non-null rate transmissions and processes the received frames accordingly. Techniques for changing the pilot transmission gating pattern to assist the receiver in detecting null rate frames are provided. In another aspect, early termination of a signal transmission over a wireless communications link is provided. In an exemplary embodiment, a base station (BS) transmits power control groups (PCG's) for a frame over a forward link (FL) to a mobile station (MS) until accurate reception of the frame is acknowledged by the MS over a reverse link (RL), possibly before all PCG's of the frame are received.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: April 21, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Yu-Cheun Jou, Peter J. Black, Rashid Ahmed A. Attar
  • Patent number: 8995417
    Abstract: Techniques to increase capacity in a wireless communications system. In an aspect, systematic non-transmission, or “blanking,” of minimal-rate frames transmitted in a communications system is provided. In an exemplary embodiment, eighth rate frames in a cdma2000 voice communications system are systematically substituted with null-rate frames carrying zero traffic bits. Provisions are nevertheless made for the transmission of certain designated as “critical” by, e.g., a vocoder. The receiver detects the presence of null rate or non-null rate transmissions and processes the received frames accordingly, including updating an outer loop power control only in response to non-null rate frames. Further techniques for changing the pilot transmission gating pattern to assist the receiver in detecting null rate frames are provided. In another aspect, early termination of a signal transmission over a wireless communications link is provided.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: March 31, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Yu-Chen Jou, Peter J. Black, Rashid Ahmed A. Attar
  • Publication number: 20140226550
    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: April 22, 2014
    Publication date: August 14, 2014
    Applicant: Qualcomm Incorporated
    Inventors: Linhai He, Akbar Rashid Ahmed Attar, Christopher Gerard Lott, Donna Ghosh
  • Patent number: 8787234
    Abstract: An access network determines to transmit multicast messages on a downlink shared channel. The access network receives a multicast registration message and a traffic channel request from at least one access terminal. The access network assigns a traffic channel to the at least one access terminal, and transmits the multicast messages on the downlink shared channel. In another example, the access network can determine a channel type upon which the support a multicast session, can indicate the channel type selection to the at least one access terminal in an announce message and can then transmit the multicast messages for the multicast session on the selected channel type. The at least one access terminal receives the announce message, requests a traffic channel and receives a traffic channel assignment, registers to the multicast session and monitors the downlink shared channel for multicast messages.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: July 22, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Bongyong Song, Harleen Gill, Mehmet Gurelli, Rashid Ahmed Attar
  • Patent number: 8630602
    Abstract: Techniques for generalized pilot interference cancellation in a communications receiver. In an exemplary embodiment, a residual pilot is cancelled from a post-traffic cancellation signal following initial first-pass pilot cancellation. Residual pilot cancellation is achieved by adding the first-pass cancelled pilot as earlier stored in memory back to the post-traffic cancellation signal, and pilot filtering the resulting signal to generate an improved pilot interference estimate. In an alternative exemplary embodiment, an arbitrary number of iterations may be applied to generate the pilot interference estimate by successively storing each generated pilot interference estimate in memory.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: January 14, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Rashid Ahmed A. Attar, Yu-Cheun Jou, Peter J. Black, Jun Ma
  • Patent number: 8605801
    Abstract: In a wireless communication system where different frequency bands are deployed to generate various communication zones, pilot signal set management for a plurality of pilot signals generated from an additional coverage zone is based on identifying a preselected signal set from the plurality of pilot signals and determining whether a predetermined criterion is met.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: December 10, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Ramin Rezaiifar, Christopher G. Lott, Donna Ghosh, Peter J. Black, Rashid Ahmed A. Attar
  • Patent number: 8565233
    Abstract: Aspects of mobility management within a wireless communications network including a plurality of sectors are disclosed. In an example, the wireless communications network includes a first cluster of sectors with at least one target sector and at least one supporting sector. The multicast communication session is carried within both the target and supporting sectors. In another example, a second cluster can be included within the network for supporting the same multicast communication session that includes its own target and supporting sectors. In this example, the first cluster transmits multicast media on a first interlace-multiplex (IM) pair of a downlink broadcast channel (BCH) and the second cluster transmits multicast media on a second IM pair of the downlink BCH. If sectors of the first and second clusters overlap, the network controls a manner in which the first and second clusters carry the multicast media.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: October 22, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Bongyong Song, Rashid Ahmed Attar, Mehmet Gurelli
  • Publication number: 20120275439
    Abstract: Method and apparatus for power boosting a portion of installments in transmission of a packet of data. The power boosting incorporates a power boost factor for each installment. On receipt of a negative acknowledgement after the power boosted portion of installments, transmission of the subpacket is terminated, and processing passed to a higher layer.
    Type: Application
    Filed: July 9, 2012
    Publication date: November 1, 2012
    Applicant: QUALCOMM Incorporated
    Inventors: Naga Bhushan, Peter J. Black, Rashid Ahmed Attar
  • Patent number: 8218573
    Abstract: Method and apparatus for power boosting a portion of installments in transmission of a packet of data. The power boosting incorporates a power boost factor for each installment. On receipt of a negative acknowledgement after the power boosted portion of installments, transmission of the subpacket is terminated, and processing passed to a higher layer.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: July 10, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Naga Bhushan, Peter J. Black, Rashid Ahmed Attar
  • Patent number: 8194598
    Abstract: Methods and apparatus for a data transmission in a communication system are disclosed. Each of a subset of plural access terminals desiring to transmit user data in an interval transmits a request to transmit in the interval to an access network. The access network makes a decision to schedule at least one of the subset of the plural access terminals to transmit in the interval in accordance with the request. At least one access point of the access network transmits the decision to the plural access terminals.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: June 5, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Rashid Ahmed Attar, Naga Bhushan
  • Patent number: 8165619
    Abstract: A power allocation value for power control information transmitted from a first station to a plurality of stations is determined by receiving data rate control information from the plurality of stations in a communications system. Supplemental information relating to the data rate control information is then generated, and an improved signal strength value is produced in accordance with the supplemental information. The power allocation value for the power control information transmitted from the first station to the plurality of stations is determined in accordance with the improved signal strength value.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: April 24, 2012
    Assignee: Qualcomm Incorporated
    Inventors: Rashid Ahmed Attar, Nagabhushana Sindhushayana, Peter J. Black
  • Publication number: 20100322131
    Abstract: An access network determines to transmit multicast messages on a downlink shared channel. The access network receives a multicast registration message and a traffic channel request from at least one access terminal. The access network assigns a traffic channel to the at least one access terminal, and transmits the multicast messages on the downlink shared channel. In another example, the access network can determine a channel type upon which the support a multicast session, can indicate the channel type selection to the at least one access terminal in an announce message and can then transmit the multicast messages for the multicast session on the selected channel type. The at least one access terminal receives the announce message, requests a traffic channel and receives a traffic channel assignment, registers to the multicast session and monitors the downlink shared channel for multicast messages.
    Type: Application
    Filed: June 23, 2009
    Publication date: December 23, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Bongyong Song, Harleen Gill, Mehmet Gurelli, Rashid Ahmed Attar
  • Patent number: 7746816
    Abstract: An apparatus and a method for power control of a channel in a communication system are disclosed.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: June 29, 2010
    Assignee: Qualcomm Incorporated
    Inventors: Rashid Ahmed Attar, Naga Bhushan
  • Patent number: 7738906
    Abstract: An apparatus and a method for a control channel power allocation in a communication system are disclosed. The method of control channel power allocation in an embodiment includes sorting a plurality of access terminals in an order of increasing required medium access control (MAC) channel power into a plurality of bins, sorting the access terminals with equal required MAC channel power in an order of decreasing forward link signal to interference and noise ratio (FL_SINR) if two or more access terminals have equal required MAC channel power, and determining total available ARQ power based upon total MAC channel power, total power allocated to reverse power control (RPC) channels, and total power allocated to reverse activity bit (RAB) channels.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: June 15, 2010
    Assignee: QUALCOMM Incorporated
    Inventors: Rashid Ahmed Attar, Naga Bhushan, Mingxi Fan
  • Publication number: 20090303968
    Abstract: Techniques to increase capacity in a wireless communications system. In an aspect, systematic non-transmission, or “blanking,” of minimal-rate frames transmitted in a communications system is provided. In an exemplary embodiment, eighth rate frames in a cdma2000 voice communications system are systematically substituted with null-rate frames carrying zero traffic bits. Provisions are nevertheless made for the transmission of certain designated as “critical” by, e.g., a vocoder. The receiver detects the presence of null rate or non-null rate transmissions and processes the received frames accordingly, including updating an outer loop power control only in response to non-null rate frames. Further techniques for changing the pilot transmission gating pattern to assist the receiver in detecting null rate frames are provided. In another aspect, early termination of a signal transmission over a wireless communications link is provided.
    Type: Application
    Filed: April 15, 2009
    Publication date: December 10, 2009
    Applicant: QUALCOMM Incorporation
    Inventors: Yu-Cheun Jou, Peter J. Black, Rashid Ahmed A. Attar
  • Publication number: 20090304024
    Abstract: Techniques to increase capacity in a wireless communications system. In an aspect, systematic non-transmission, or “blanking,” of minimal-rate frames transmitted in a communications system is provided. In an exemplary embodiment, eighth rate frames in a cdma2000 voice communications system are systematically substituted with null-rate frames carrying zero traffic bits. Provisions are nevertheless made for the transmission of certain designated as “critical” by, e.g., a vocoder. The receiver detects the presence of null rate or non-null rate transmissions and processes the received frames accordingly, including updating an outer loop power control only in response to non-null rate frames. Further techniques for changing the pilot transmission gating pattern to assist the receiver in detecting null rate frames are provided. In another aspect, early termination of a signal transmission over a wireless communications link is provided.
    Type: Application
    Filed: April 15, 2009
    Publication date: December 10, 2009
    Applicant: QUALCOMM Incorporated
    Inventors: Yu-Chen Jou, Peter J. Black, Rashid Ahmed A. Attar
  • Publication number: 20090303976
    Abstract: Techniques to increase capacity in a wireless communications system. In an aspect, systematic non-transmission, or “blanking,” of minimal-rate frames transmitted in a communications system is provided. In an exemplary embodiment, eighth rate frames in a cdma2000 voice communications system are systematically substituted with null-rate frames carrying zero traffic bits. Provisions are nevertheless made for the transmission of certain designated as “critical” by, e.g., a vocoder. The receiver detects the presence of null rate or non-null rate transmissions and processes the received frames accordingly, including updating an outer loop power control only in response to non-null rate frames. Further techniques for changing the pilot transmission gating pattern to assist the receiver in detecting null rate frames are provided. In another aspect, early termination of a signal transmission over a wireless communications link is provided.
    Type: Application
    Filed: April 15, 2009
    Publication date: December 10, 2009
    Applicant: QUALCOMM Incorporated
    Inventors: Yu-Cheun Jou, Peter J. Black, Rashid Ahmed A. Attar
  • Publication number: 20090290652
    Abstract: In a wireless communication system where different frequency bands are deployed to generate various communication zones, pilot signal set management for a plurality of pilot signals generated from an additional coverage zone is based on identifying a preselected signal set from the plurality of pilot signals and determining whether a predetermined criterion is met.
    Type: Application
    Filed: May 15, 2009
    Publication date: November 26, 2009
    Applicant: QUALCOMM Incorporated
    Inventors: Ramin Rezaiifar, Christopher G. Lott, Donna Ghosh, Peter J. Black, Rashid Ahmed A. Attar