Patents by Inventor Ardavan M. Tehrani
Ardavan M. Tehrani 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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Publication number: 20230370356Abstract: A method of determining a problem with data packet transmission speed over a first communication medium coupled between a plurality of content servers and an ISP communication device. The method comprises repeatedly measuring the data packet transmission speed over the first communication medium coupled between each of the plurality of content servers and the ISP communication device, and determining there is a problem with the data packet transmission speed over the first communication medium coupled between one of the plurality of content servers and the ISP communication device when the repeatedly measured data packet transmission speeds over the first communication medium coupled between the one of the plurality of content servers and the ISP communication device is substantially different from the repeatedly measured data packet transmission speeds over the first communication medium coupled between other of the plurality of content servers and the ISP communication device.Type: ApplicationFiled: July 15, 2023Publication date: November 16, 2023Applicant: ASSIA SPE, LLCInventors: John M. Cioffi, Christopher Fisher, Philip Bednarz, Ardavan M. Tehrani, Tuncay Cil, Lan Ke, Chan-Soo Hwang
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Patent number: 11706118Abstract: A method of determining a problem with data packet transmission speed over a first communication medium coupled between a plurality of content servers and an ISP communication device. The method comprises repeatedly measuring the data packet transmission speed over the first communication medium coupled between each of the plurality of content servers and the ISP communication device, and determining there is a problem with the data packet transmission speed over the first communication medium coupled between one of the plurality of content servers and the ISP communication device when the repeatedly measured data packet transmission speeds over the first communication medium coupled between the one of the plurality of content servers and the ISP communication device is substantially different from the repeatedly measured data packet transmission speeds over the first communication medium coupled between other of the plurality of content servers and the ISP communication device.Type: GrantFiled: January 25, 2021Date of Patent: July 18, 2023Assignee: ASSIA SPE, LLCInventors: John M. Cioffi, Christopher Fisher, Philip Bednarz, Ardavan M. Tehrani, Tuncay Cil, Lan Ke, Chan-Soo Hwang
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Publication number: 20210152458Abstract: A method of determining a problem with data packet transmission speed over a first communication medium coupled between a plurality of content servers and an ISP communication device. The method comprises repeatedly measuring the data packet transmission speed over the first communication medium coupled between each of the plurality of content servers and the ISP communication device, and determining there is a problem with the data packet transmission speed over the first communication medium coupled between one of the plurality of content servers and the ISP communication device when the repeatedly measured data packet transmission speeds over the first communication medium coupled between the one of the plurality of content servers and the ISP communication device is substantially different from the repeatedly measured data packet transmission speeds over the first communication medium coupled between other of the plurality of content servers and the ISP communication device.Type: ApplicationFiled: January 25, 2021Publication date: May 20, 2021Applicant: ASSIA SPE, LLCInventors: John M. Cioffi, Christopher Fisher, Philip Bednarz, Ardavan M. Tehrani, Tuncay Cil, Lan Ke, Chan-Soo Hwang
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Patent number: 10904129Abstract: A method of determining a problem with data packet transmission speed over a first communication medium coupled between a plurality of content servers and an ISP communication device. The method comprises repeatedly measuring the data packet transmission speed over the first communication medium coupled between each of the plurality of content servers and the ISP communication device, and determining there is a problem with the data packet transmission speed over the first communication medium coupled between one of the plurality of content servers and the ISP communication device when the repeatedly measured data packet transmission speeds over the first communication medium coupled between the one of the plurality of content servers and the ISP communication device is substantially different from the repeatedly measured data packet transmission speeds over the first communication medium coupled between other of the plurality of content servers and the ISP communication device.Type: GrantFiled: January 20, 2020Date of Patent: January 26, 2021Assignee: ASSIA SPE, LLCInventors: John Cioffi, Christopher Fisher, Philip Bednarz, Ardavan M. Tehrani, Tuncay Cil, Lan Ke, Chan-Soo Hwang
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Publication number: 20200153723Abstract: A method of determining a problem with data packet transmission speed over a first communication medium coupled between a plurality of content servers and an ISP communication device. The method comprises repeatedly measuring the data packet transmission speed over the first communication medium coupled between each of the plurality of content servers and the ISP communication device, and determining there is a problem with the data packet transmission speed over the first communication medium coupled between one of the plurality of content servers and the ISP communication device when the repeatedly measured data packet transmission speeds over the first communication medium coupled between the one of the plurality of content servers and the ISP communication device is substantially different from the repeatedly measured data packet transmission speeds over the first communication medium coupled between other of the plurality of content servers and the ISP communication device.Type: ApplicationFiled: January 20, 2020Publication date: May 14, 2020Applicant: ASSIA SPE, LLCInventors: John Cioffi, Christopher Fisher, Philip Bednarz, Ardavan M. Tehrani, Tuncay Cil, Lan Ke, Chan-Soo Hwang
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Patent number: 10567266Abstract: A method of determining a problem with data packet transmission speed over a first communication medium coupled between a plurality of content servers and an ISP communication device. The method comprises repeatedly measuring the data packet transmission speed over the first communication medium coupled between each of the plurality of content servers and the ISP communication device, and determining there is a problem with the data packet transmission speed over the first communication medium coupled between one of the plurality of content servers and the ISP communication device when the repeatedly measured data packet transmission speeds over the first communication medium coupled between the one of the plurality of content servers and the ISP communication device is substantially different from the repeatedly measured data packet transmission speeds over the first communication medium coupled between other of the plurality of content servers and the ISP communication device.Type: GrantFiled: September 24, 2015Date of Patent: February 18, 2020Assignee: ASSIA SPE, LLCInventors: John Cioffi, Fisher Christopher, Philip Bednarz, Ardavan M. Tehrani, Tuncay Cil, Lan Ke
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Publication number: 20190238444Abstract: A method of determining a problem with data packet transmission speed over a first communication medium coupled between a plurality of content servers and an ISP communication device. The method comprises repeatedly measuring the data packet transmission speed over the first communication medium coupled between each of the plurality of content servers and the ISP communication device, and determining there is a problem with the data packet transmission speed over the first communication medium coupled between one of the plurality of content servers and the ISP communication device when the repeatedly measured data packet transmission speeds over the first communication medium coupled between the one of the plurality of content servers and the ISP communication device is substantially different from the repeatedly measured data packet transmission speeds over the first communication medium coupled between other of the plurality of content servers and the ISP communication device.Type: ApplicationFiled: September 24, 2015Publication date: August 1, 2019Inventors: Cioffi John, Fisher Christopher, Philip Bednarz, Ardavan M. Tehrani, Tuncay Cil, Lan Ke
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Publication number: 20100098183Abstract: A Viterbi decoding system interprets bits in received QAM constellations as many-valued parameters rather than binary valued parameters. It performs the Viterbi algorithm using these many-valued parameters to provide results superior to hard decision decoding. Rather than applying a hard 0-1 function to the QAM data, the system uses a non-stepped linear or curved transfer function to assign values to the bits. In another aspect, a system differentiates between data bits based on their estimated reliability, giving more emphasis to decoding reliable bits than unreliable bits using any of a variety of techniques. By differentiating between god and bad bits and de-emphasizing or ignoring unreliable bits, the system can provide a significant reduction in uncorrectable errors and packet loss.Type: ApplicationFiled: November 9, 2009Publication date: April 22, 2010Inventors: John S. Thomson, Paul J. Husted, Ardavan M. Tehrani, Jeffrey M. Gilbert, William J. McFarland, Lars E. Thon, Yi-Hsiu Wang
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Publication number: 20080159123Abstract: The present invention provides an apparatus and method of multiple antenna receiver combining of high data rate wideband packetized wireless communication signals, where the apparatus includes M receive antennas, receiving M high data rate wideband packetized wireless communication signals, where each of the signals includes N frequency bins. The apparatus, in an exemplary embodiment, includes (1) a joint timing recovery units that perform joint coarse signal timing estimation, joint frequency offset estimation, and joint fine timing estimation on each of the signals, (2) M Fast Fourier Transform units (FFTs) that each convert the digital data for each of the M signals into frequency domain information for each of the N received frequencies and that output Q pilots for each of the signals, where Q is a positive integer, and (3) a combiner that weights and combines the outputs of the M FFTs for each of the N received frequencies.Type: ApplicationFiled: March 6, 2008Publication date: July 3, 2008Inventors: Ardavan M. Tehrani, Won-Joon Choi, Jeffrey M. Gilbert, Yi Hsiu Wang
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Patent number: 7385914Abstract: The present invention provides an apparatus and method of multiple antenna transmitter beamforming of high data rate wideband packetized wireless communication signals, where each of the signals comprises N frequencies, where N is a positive integer. The apparatus, in an exemplary embodiment, includes (1) a transmit beamformer that co-phases and weights the signals for each of the N frequencies across M antennas, thereby generating M co-phased and weighted frequency data and (2) M Inverse Fast Fourier Transform units (IFFTs) that convert the M co-phased and weighted frequency data into M digital outputs, and M transmit antennas transmitting the M co-phased and weighted signals, where M is an integer greater than or equal to 2.Type: GrantFiled: October 8, 2003Date of Patent: June 10, 2008Assignee: Atheros Communications, Inc.Inventors: Won-Joon Choi, Ardavan M. Tehrani, Jeffrey M. Gilbert, Samuel Ng
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Patent number: 7366089Abstract: The present invention provides an apparatus and method of multiple antenna receiver combining of high data rate wideband packetized wireless communication signals, where the apparatus includes M receive antennas, receiving M high data rate wideband packetized wireless communication signals, where each of the signals includes N frequency bins. The apparatus, in an exemplary embodiment, includes (1) a joint timing recovery units that perform joint coarse signal timing estimation, joint frequency offset estimation, and joint fine timing estimation on each of the signals, (2) M Fast Fourier Transform units (FFTs) that each convert the digital data for each of the M signals into frequency domain information for each of the N received frequencies and that output Q pilots for each of the signals, where Q is a positive integer, and (3) a combiner that weights and combines the outputs of the M FFTs for each of the N received frequencies.Type: GrantFiled: October 8, 2003Date of Patent: April 29, 2008Assignee: Atheros Communications, Inc.Inventors: Ardavan M. Tehrani, Won-Joon Choi, Jeffrey M. Gilbert, Yi Hsiu Wang
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Patent number: 7173972Abstract: A Viterbi decoding system interprets bits in received QAM constellations as many-valued parameters rather than binary valued parameters. It performs the Viterbi algorithm using these many-valued parameters to provide results superior to hard decision decoding. Rather than applying a hard 0-1 function to the QAM data, the system uses a non-stepped linear or curved transfer function to assign values to the bits. In another aspect, a system differentiates between data bits based on their estimated reliability, giving more emphasis to decoding reliable bits than unreliable bits using any of a variety of techniques. By differentiating between god and bad bits and de-emphasizing or ignoring unreliable bits, the system can provide a significant reduction in uncorrectable errors and packet loss.Type: GrantFiled: March 23, 2001Date of Patent: February 6, 2007Inventors: John S. Thomson, Paul J. Hustad, Ardavan M. Tehrani, Jeffrey M. Gilbert, William J. McFarland, Lars E. Thon, Yi-Hsiu Wang