Patents by Inventor Ayman Ahmed

Ayman Ahmed 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: 20120023235
    Abstract: Example methods and apparatus to poll in wireless communications are disclosed. A disclosed example method involves receiving a poll from a network during a first radio block period and identifying a resource for use in sending requested information to the network in response to the poll. The resource occurs during a subsequent radio block period, and the identifying of the resource is based on receipt of an uplink allocation indicator. The example method also involves transmitting a response to the poll.
    Type: Application
    Filed: July 22, 2010
    Publication date: January 26, 2012
    Inventors: David Philip Hole, Christopher Harris Snow, Ayman Ahmed Abdel-Samad, Dinesh Kumar Arora, Nazih Almalki
  • Publication number: 20110298547
    Abstract: A substantially temperature-independent LC-based oscillator is achieved using an LC tank that generates a tank oscillation at a phase substantially equal to a temperature null phase. The temperature null phase is a phase of the LC tank at which variations in frequency of an output oscillation of the LC-based oscillator with temperature changes are minimized. The LC-based oscillator further includes frequency stabilizer circuitry coupled to the LC tank to cause the LC tank to oscillate at the phase substantially equal to the temperature null phase.
    Type: Application
    Filed: August 15, 2011
    Publication date: December 8, 2011
    Applicant: SI-WARE SYSTEMS
    Inventors: Bassel Hanafi, Sherif Hosny, Ayman Ahmed
  • Patent number: 8072281
    Abstract: A substantially temperature-independent LC-based oscillator is achieved using an LC tank that generates a tank oscillation at a phase substantially equal to a temperature null phase. The temperature null phase is a phase of the LC tank at which variations in frequency of an output oscillation of the LC-based oscillator with temperature changes are minimized. The LC-based oscillator further includes frequency stabilizer circuitry coupled to the LC tank to cause the LC tank to oscillate at the phase substantially equal to the temperature null phase.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: December 6, 2011
    Assignee: Si-Ware Systems Inc.
    Inventors: Bassel Hanafi, Sherif Hosny, Ayman Ahmed
  • Publication number: 20110201279
    Abstract: Methods and apparatus to perform measurements are disclosed. An example method disclosed herein for a user equipment (UE) to perform measurements in a mobile communication network comprises receiving configuration information comprising at least one of a validity state, a measurement activation criterion, a measurement deactivation criterion, a reporting criterion or a location request criterion to configure a measurement, and performing the measurement based on the configuration information.
    Type: Application
    Filed: February 12, 2010
    Publication date: August 18, 2011
    Inventors: Takashi Suzuki, Christopher Harris Snow, Nazih Almalki, Ayman Ahmed Abdel-Samad, Dinesh Kumar Arora, Richard Burbidge, Gordon Young, Xusheng Wei
  • Publication number: 20110134908
    Abstract: The present document relates to radio transmission. In particular, the present document relates to the single-slot dual transfer mode (DTM) available e.g. in GSM/GPRS/GERAN networks. A transmitter is described. The transmitter is configured to send circuit switched data over a traffic channel to a corresponding receiver, wherein the traffic channel is segmented into a plurality of frames. The transmitter if further configured to determine a vacant frame of the plurality of frames, wherein no circuit switched data is sent in the vacant frame due to discontinuous transmission; and to send packet switched data over the traffic channel using the vacant frame.
    Type: Application
    Filed: December 4, 2009
    Publication date: June 9, 2011
    Inventors: Nazih ALMALKI, Christopher Harris Snow, Ayman Ahmed Abdel-Samad, Dinesh Kumar Arora
  • Publication number: 20110113309
    Abstract: Methods and systems are disclosed for decoding digital data received by a correspondent device over a communication channel. The data includes a component corresponding to a plurality of values unknown to the correspondent device and a component corresponding to one or more values known a priori by the correspondent device. To perform decoding, the correspondent device retrieves from memory at least one of the one or more known values. The correspondent device then applies a statistical measure using the known value(s) to estimate the location of the component corresponding to the one or more known values. The one or more known values and the estimated location of the component corresponding to the one or more known values are then used to assist in decoding the data.
    Type: Application
    Filed: November 9, 2009
    Publication date: May 12, 2011
    Applicant: Research In Motion Limited
    Inventors: Christopher Harris Snow, Ayman Ahmed Mahmoud Abdel-Samad
  • Publication number: 20110105158
    Abstract: Methods and apparatus to avoid transmission of redundant neighbor cell information to mobile stations. An example method to avoid transmission of at least some neighbor cell system information from a network to a mobile station disclosed herein comprises receiving neighbor cell system information, setting a validity indication representing whether the mobile station has valid neighbor cell system information associated with a neighbor cell, and sending the validity indication to the network.
    Type: Application
    Filed: November 4, 2009
    Publication date: May 5, 2011
    Inventors: Dinesh Kumar Arora, Christopher Harris Snow, Ayman Ahmed Abdel-Samad, Nazih Almalki, David Philip Hole
  • Publication number: 20110105120
    Abstract: Methods and apparatus to monitor a channel to determine neighbor cell information are disclosed. An example method for a first mobile station to determine cell information for a first cell disclosed herein comprises monitoring a channel for messages containing cell information, receiving a first message via the monitored channel and addressed to a second mobile station, the first message including first cell information, and storing the first cell information for a time period after receiving the first message.
    Type: Application
    Filed: November 4, 2009
    Publication date: May 5, 2011
    Inventors: Ayman Ahmed Abdel-Samad, Dinesh Kumar Arora, Christopher Harris Snow, Nazih Almalki, David Philip Hole
  • Publication number: 20110051660
    Abstract: A system and method for acquisition of neighbour cell information are provided. A serving cell receives a request for neighbour cell system information, and in response to the request, the serving cell transmits neighbour cell system information.
    Type: Application
    Filed: August 28, 2009
    Publication date: March 3, 2011
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: DINESH KUMAR ARORA, CHRISTOPHER HARRIS SNOW, AYMAN AHMED ABDEL-SAMAD, NAZIH ALMALKI
  • Publication number: 20110053595
    Abstract: An access procedure for call re-establishment is provided. In a first method, a mobile station, in at least some instances of detecting radio link failure, attempts call re-establishment on multiple cells concurrently. In a second method, a mobile station performs a first random access channel procedure when the mobile station is not aware of at least two cells with enabled call re-establishment, and performs a second random access channel procedure when the mobile station is aware of at least two cells with enabled call re-establishment.
    Type: Application
    Filed: August 28, 2009
    Publication date: March 3, 2011
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Christopher Harris SNOW, Nazih ALMALKI, Ayman Ahmed ABDEL-SAMAD, Dinesh Kumar ARORA
  • Publication number: 20110053586
    Abstract: A radio link timeout procedure for call re-establishment is provided. A mobile station receives signals over a wireless link, determines whether there is a potential call re-establishment as defined by at least one condition, and decides whether radio link failure has occurred on the basis of the signals received over the wireless link such that while there is a potential for call re-establishment as defined by the at least one condition, a decision that a radio link failure has occurred is made earlier than if there is no potential for call re-establishment.
    Type: Application
    Filed: August 28, 2009
    Publication date: March 3, 2011
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Christopher Harris SNOW, Ayman Ahmed ABDEL-SAMAD, Nazih ALMALKI, Dinesh Kumar ARORA, David Philip HOLE
  • Publication number: 20100045394
    Abstract: A substantially temperature-independent LC-based oscillator is achieved using an LC tank that generates a tank oscillation at a phase substantially equal to a temperature null phase. The temperature null phase is a phase of the LC tank at which variations in frequency of an output oscillation of the LC-based oscillator with temperature changes are minimized. The LC-based oscillator further includes frequency stabilizer circuitry coupled to the LC tank to cause the LC tank to oscillate at the phase substantially equal to the temperature null phase.
    Type: Application
    Filed: August 21, 2009
    Publication date: February 25, 2010
    Applicant: SI-WARE SYSTEMS
    Inventors: Bassel Hanafi, Sherif Hosny, Ayman Ahmed
  • Publication number: 20090041353
    Abstract: A method and system for a user to collect point of contact information for one or more event attendees, in which identification information associated with an attendee is scanned and transmitted to a data server. More particularly, a method and system is provided for a user to scan a bar code on a visitor identification badge and extract an identification code which can be sent to a data server in order to obtain certain visitor information associated with the identification code. The user can access the data server to obtain the information associated with the user's data collection activity which can stored on the data server such as the information on each scanned visitor badge and associated visitor information, as well as time and location of the data capture.
    Type: Application
    Filed: July 30, 2008
    Publication date: February 12, 2009
    Inventors: Lewis Hoff, Hossein Kashani, Ayman Ahmed
  • Publication number: 20080082537
    Abstract: A device and method for collecting point of contact information for individuals, in which personal identification information associated with an individual is obtained and stored, and contemporaneous observation data associated with the individual, such as an audio or video information is captured, stored and automatically associated with personal identification information of the individual.
    Type: Application
    Filed: September 29, 2006
    Publication date: April 3, 2008
    Inventors: Ayman Ahmed, Zhe Huang
  • Patent number: 6534627
    Abstract: The present invention is directed to the process of preparing a peptide comprising reacting a first amino acid or peptide with an amino acid fluoride of the formula: or the acid fluoride salts thereof wherein BLK is an N-amino protecting group; AA is an amino acid residue; and X is absent or a protecting group. The amino acid fluoride is useful as a coupling agent in peptide synthesis.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: March 18, 2003
    Assignee: Research Corporation Tecnologies, Inc.
    Inventors: Louis A. Carpino, Ayman Ahmed El-Faham
  • Patent number: 6040422
    Abstract: The present invention is directed to a process for forming a peptide bond between a first amino acid having a free amino group and a protected carboxy group and a second amino acid or between a peptide having a free amino group and a blocking carboxy group with a second amino acid which comprises (a) reacting the second amino acid of the formula: ##STR1## with a fluoroformamidinium salt of the formula: ##STR2## and (b) reacting the product of (a) with the first amino acid or peptide.
    Type: Grant
    Filed: January 5, 1998
    Date of Patent: March 21, 2000
    Assignee: Research Corporation Technologies, Inc.
    Inventors: Louis A. Carpino, Ayman Ahmed El-Faham
  • Patent number: 5750767
    Abstract: The present invention is directed to the process of preparing a peptide comprising reacting a first amino acid or peptide with an amino acid fluoride of the formula: ##STR1## or the acid fluoride salts thereof wherein BLK is an N-amino protecting groupAA is an amino acid residue andX is H or a protecting group useful,and the first amino and peptide have a free amino group and a blocked carboxy end.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: May 12, 1998
    Assignee: Research Corporation Technologies, Inc.
    Inventors: Louis A. Carpino, Ayman Ahmed El-Faham
  • Patent number: 5712418
    Abstract: The present invention is directed to the process of preparing a peptide comprising reacting a first amino acid or peptide with an amino acid fluoride of the formula: ##STR1## or the acid fluoride salts thereof wherein BLK is an N-amino protecting groupAA is an amino acid residue andX is H or a protecting group useful,and the first amino and peptide have a free amino group and a blocked carboxy end.
    Type: Grant
    Filed: August 2, 1994
    Date of Patent: January 27, 1998
    Assignee: Research Corporation Technologies, Inc.
    Inventors: Louis A. Carpino, Ayman Ahmed El-Faham