Patents by Inventor Son Binh Cam
Son Binh Cam 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).
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Patent number: 9413601Abstract: A first network device determines whether a first reference code included in at least a first transmission on a communication channel is associated with a code configured in the first network device. The communication channel is shared among a plurality of communication networks and the first reference code is associated with a first communication network of the plurality of communication networks. The first network device joins the first communication network associated with the first reference code in response to determining the first reference code is associated with the code configured in the first network device. The first network device communicates with a second network device in the first communication network using the code configured in the first network device.Type: GrantFiled: March 15, 2013Date of Patent: August 9, 2016Assignee: QUALCOMM IncorporatedInventors: Joubin Karimi, Ehab Tahir, Brian James Langlais, John Fraser Chappel, Son Binh Cam, Richard David Roze, Gregory Allen Magin, Celestino A. Corral, Syed Adil Hussain, Keith Riley
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Patent number: 9131454Abstract: A power spectral density (PSD) shape may be modified based upon the transmitter power setting of a transmitter. The power associated with notched frequencies and adjacent frequencies may be adjusted responsive to a change in transmitter power setting. As a result of adjusting the power for the notched frequencies and adjacent frequencies when operating at the different transmitter power setting, the performance of the transmission system is improved. The PSD shape may be considered dynamic, being modified responsive to a change in transmitter power setting by adjusting power associated with notches in the PSD shape based on the transmitter power setting and PSD constraint.Type: GrantFiled: March 13, 2013Date of Patent: September 8, 2015Assignee: QUALCOMM IncorporatedInventors: Brian James Langlais, Ehab Tahir, Joubin Karimi, John Fraser Chappel, Son Binh Cam, Richard David Roze
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Patent number: 9077489Abstract: A tone map includes physical layer transmission properties for a multi-carrier communications channel. The physical layer transmission properties indicate modulation mode and transmission power to be used on one or more frequencies (i.e. “tones”). The transmission power may be reduced on a first frequency having a high signal-to-noise ratio (SNR) so that performance will improve for a second frequency having a lower SNR. Transmission power may be reduced on a first frequency having an unusably low SNR so that performance will improve on a second frequency. A tone map message is used to efficiently communicate modulation and transmission power adjustments on a per-carrier basis.Type: GrantFiled: March 13, 2013Date of Patent: July 7, 2015Assignee: QUALCOMM IncorporatedInventors: Ehab Tahir, Son Binh Cam, Richard David Roze, Joubin Karimi, Brian James Langlais, John Fraser Chappel, Syed Hussain, Manjunath Krishnam, Gregory Magin
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Patent number: 9071390Abstract: A transmitting device may determine a physical layer transmission properties based upon an amount of data to transmit via a communications channel. The physical layer transmission properties may comprise a derated tone map that has a lower physical layer transmission throughput capability than an original tone map. An indication regarding the derated tone map may be included in a first message, a portion of a physical layer framing protocol, a physical layer control transmission (such as a frame control symbol), or other transmissions such that the receiving device can derive the derated tone map without significant added overhead.Type: GrantFiled: January 10, 2013Date of Patent: June 30, 2015Assignee: QUALCOMM IncorporatedInventors: Ehab Tahir, Nikolai Kroupetski, John Fraser Chappel, Brian James Langlais, Joubin Karimi, Richard D. Roze, Son Binh Cam
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Patent number: 8948039Abstract: A method includes determining a first Signal-to-Noise Ratio (SNR) average for a first symbol set of at least one or more first symbols in one or more packets. The method includes determining a second SNR average for a second symbol set of at least one or more second symbols in the one or more packets. The method also includes determining a first difference between the first SNR average and the second SNR average. In response to determining that the first difference exceeds an SNR threshold, the method includes determining that a first channel event has occurred in the one or more packets at least within the first symbol set and the second symbol set and in response to determining that the first channel event has occurred, determining is to remain at the first data rate or at a second data rate that is higher than the first data rate.Type: GrantFiled: December 11, 2012Date of Patent: February 3, 2015Assignee: QUALCOMM IncorporatedInventors: John Chappel, Brian J. Langlais, Joubin Karimi, Richard D. Roze, Son Binh Cam, Din Lee, Ehab Tahir
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Publication number: 20140269873Abstract: A tone map includes physical layer transmission properties for a multi-carrier communications channel. The physical layer transmission properties indicate modulation mode and transmission power to be used on one or more frequencies (i.e. “tones”). The transmission power may be reduced on a first frequency having a high signal-to-noise ratio (SNR) so that performance will improve for a second frequency having a lower SNR. Transmission power may be reduced on a first frequency having an unusably low SNR so that performance will improve on a second frequency. A tone map message is used to efficiently communicate modulation and transmission power adjustments on a per-carrier basis.Type: ApplicationFiled: March 13, 2013Publication date: September 18, 2014Applicant: QUALCOMM IncorporatedInventors: Ehab Tahir, Son Binh Cam, Richard David Roze, Joubin Karimi, Brian James Langlais, John Fraser Chappel, Syed Hussain, Manjunath Krishnam, Gregory Magin
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Publication number: 20140266641Abstract: A power spectral density (PSD) shape may be modified based upon the transmitter power setting of a transmitter. The power associated with notched frequencies and adjacent frequencies may be adjusted responsive to a change in transmitter power setting. As a result of adjusting the power for the notched frequencies and adjacent frequencies when operating at the different transmitter power setting, the performance of the transmission system is improved. The PSD shape may be considered dynamic, being modified responsive to a change in transmitter power setting by adjusting power associated with notches in the PSD shape based on the transmitter power setting and PSD constraint.Type: ApplicationFiled: March 13, 2013Publication date: September 18, 2014Applicant: QUALCOMM IncorporatedInventors: Brian James Langlais, Ehab Tahir, Joubin Karimi, John Fraser Chappel, Son Binh Cam, Richard David Roze
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Publication number: 20140192851Abstract: A transmitting device may determine a physical layer transmission properties based upon an amount of data to transmit via a communications channel. The physical layer transmission properties may comprise a derated tone map that has a lower physical layer transmission throughput capability than an original tone map. An indication regarding the derated tone map may be included in a first message, a portion of a physical layer framing protocol, a physical layer control transmission (such as a frame control symbol), or other transmissions such that the receiving device can derive the derated tone map without significant added overhead.Type: ApplicationFiled: January 10, 2013Publication date: July 10, 2014Applicant: QUALCOMM INCORPORATEDInventors: Ehab Tahir, Nikolai Kroupetski, John Fraser Chappel, Brian James Langlais, Joubin Karimi, Richard D. Roze, Son Binh Cam
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Publication number: 20140160953Abstract: A method includes determining a first Signal-to-Noise Ratio (SNR) average for a first symbol set of at least one or more first symbols in one or more packets. The method includes determining a second SNR average for a second symbol set of at least one or more second symbols in the one or more packets. The method also includes determining a first difference between the first SNR average and the second SNR average. In response to determining that the first difference exceeds an SNR threshold, the method includes determining that a first channel event has occurred in the one or more packets at least within the first symbol set and the second symbol set and in response to determining that the first channel event has occurred, determining is to remain at the first data rate or at a second data rate that is higher than the first data rate.Type: ApplicationFiled: December 11, 2012Publication date: June 12, 2014Applicant: QUALCOMM INCORPORATEDInventors: John CHAPPEL, Brian J. LANGLAIS, Joubin KARIMI, Richard D. ROZE, Son Binh CAM, Din LEE, Ehab TAHIR
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Publication number: 20140092774Abstract: A first network device determines whether a first reference code included in at least a first transmission on a communication channel is associated with a code configured in the first network device. The communication channel is shared among a plurality of communication networks and the first reference code is associated with a first communication network of the plurality of communication networks. The first network device joins the first communication network associated with the first reference code in response to determining the first reference code is associated with the code configured in the first network device. The first network device communicates with a second network device in the first communication network using the code configured in the first network device.Type: ApplicationFiled: March 15, 2013Publication date: April 3, 2014Applicant: QUALCOMM IncorporatedInventors: Joubin Karimi, Ehab Tahir, Brian James Langlais, John Fraser Chappel, Son Binh Cam, Richard David Roze, Gregory Allen Magin, Celestino A. Corral, Syed Adil Hussain, Keith Riley