Patents by Inventor Nima Ahmadvand
Nima Ahmadvand 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: 11601991Abstract: A network access system providing network access to a mobile terminal or other device via an untrusted access point such as a wireless access point in an untrusted network. The access point registers with a service gateway, and the wireless terminal connects with the access point and receives a first network address for use with the service gateway. The terminal registers with the service gateway via the access point, and a context identity is maintained at the service gateway, associating the terminal with the access point for the duration of the connection. The terminal can then access a wider network through the service gateway. The service gateway may maintain billing and reward data associated with the context identity.Type: GrantFiled: December 18, 2019Date of Patent: March 7, 2023Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Xuejun Lu, Nima Ahmadvand
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Publication number: 20210368555Abstract: A network access system providing network access to a mobile terminal or other device via an untrusted access point such as a wireless access point in an untrusted network. The access point registers with a service gateway, and the wireless terminal connects with the access point and receives a first network address for use with the service gateway. The terminal registers with the service gateway via the access point, and a context identity is maintained at the service gateway, associating the terminal with the access point for the duration of the connection. The terminal can then access a wider network through the service gateway. The service gateway may maintain billing and reward data associated with the context identity.Type: ApplicationFiled: December 18, 2019Publication date: November 25, 2021Inventors: Xuejun LU, Nima AHMADVAND
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Patent number: 11006276Abstract: A method and corresponding apparatus for providing a cellular subscriber with access to a WLAN are provided. They involve identifying a multimode mobile terminal, which corresponds to the subscriber and the WLAN from an access request. Based on the identification, the WLAN is authorized to provide the mobile terminal with access. The mobile terminal is then provided with access to the WLAN as a cellular subscriber and enables interoperability between the two networks. For example, the subscriber does not have to supply a credit card to pay for WLAN access directly. Instead, the subscriber pays a cellular network provider, and, in turn, the cellular network provider pays a WLAN provider for the access.Type: GrantFiled: December 5, 2013Date of Patent: May 11, 2021Assignee: Conversant Intellectual Property Management Inc.Inventors: Nima Ahmadvand, Hanwu Hu
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Patent number: 10944612Abstract: A method includes receiving an Orthogonal Frequency Division Multiplexing (OFDM) signal comprising a plurality of Doppler-shifted OFDM subcarriers and determining frequency-shift data corresponding to the plurality of Doppler-shifted OFDM subcarriers. The determining includes calculating frequency-shift data for each Doppler-shifted OFDM subcarrier of the plurality of Doppler-shifted OFDM subcarriers, thereby yielding a plurality of subcarrier-specific frequency-shift values and calculating an average of the plurality of subcarrier-specific frequency-shift values. The method further includes frequency shifting each subcarrier of the plurality of Doppler-shifted OFDM subcarriers by a value based on the determined frequency-shift data multiplied by a frequency index of each subcarrier.Type: GrantFiled: October 30, 2019Date of Patent: March 9, 2021Assignee: Conversant Intellectual Property Management Inc.Inventors: Hanwu Hu, Nima Ahmadvand
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Patent number: 10849063Abstract: In one embodiment, a method is performed by a wireless station. The method includes receiving from an access point (AP) a request for measurement of at least one link-quality parameter. The method further includes measuring the at least one link-quality parameter to generate a link-quality-parameter measurement. The method also includes determining, for the wireless station, an appropriate wireless-station category of a plurality of wireless-station categories. The plurality of wireless-station categories are defined based at least in part on the link-quality-parameter measurement. In addition, the method includes communicating with the AP in accordance with a transmission schedule corresponding to the plurality of wireless-station categories.Type: GrantFiled: June 3, 2019Date of Patent: November 24, 2020Assignee: Conversant Intellectual Property Management Inc.Inventors: Xuejun Lu, Nima Ahmadvand
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Publication number: 20200136879Abstract: A method includes receiving an Orthogonal Frequency Division Multiplexing (OFDM) signal comprising a plurality of Doppler-shifted OFDM subcarriers and determining frequency-shift data corresponding to the plurality of Doppler-shifted OFDM subcarriers. The determining includes calculating frequency-shift data for each Doppler-shifted OFDM subcarrier of the plurality of Doppler-shifted OFDM subcarriers, thereby yielding a plurality of subcarrier-specific frequency-shift values and calculating an average of the plurality of subcarrier-specific frequency-shift values. The method further includes frequency shifting each subcarrier of the plurality of Doppler-shifted OFDM subcarriers by a value based on the determined frequency-shift data multiplied by a frequency index of each subcarrier.Type: ApplicationFiled: October 30, 2019Publication date: April 30, 2020Inventors: Hanwu HU, Nima AHMADVAND
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Publication number: 20200128478Abstract: In one embodiment, a method is performed by a wireless station. The method includes receiving from an access point (AP) a request for measurement of at least one link-quality parameter. The method further includes measuring the at least one link-quality parameter to generate a link-quality-parameter measurement. The method also includes determining, for the wireless station, an appropriate wireless-station category of a plurality of wireless-station categories. The plurality of wireless-station categories are defined based at least in part on the link-quality-parameter measurement. In addition, the method includes communicating with the AP in accordance with a transmission schedule corresponding to the plurality of wireless-station categories.Type: ApplicationFiled: June 3, 2019Publication date: April 23, 2020Inventors: Xuejun LU, Nima AHMADVAND
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Patent number: 10498578Abstract: A method includes receiving an Orthogonal Frequency Division Multiplexing (OFDM) signal comprising a plurality of Doppler-shifted OFDM subcarriers and determining frequency-shift data corresponding to the plurality of Doppler-shifted OFDM subcarriers. The determining includes calculating frequency-shift data for each Doppler-shifted OFDM subcarrier of the plurality of Doppler-shifted OFDM subcarriers, thereby yielding a plurality of subcarrier-specific frequency-shift values and calculating an average of the plurality of subcarrier-specific frequency-shift values. The method further includes frequency shifting each subcarrier of the plurality of Doppler-shifted OFDM subcarriers by a value based on the determined frequency-shift data multiplied by a frequency index of each subcarrier.Type: GrantFiled: August 30, 2018Date of Patent: December 3, 2019Assignee: Conversant Intellectual Property Management Inc.Inventors: Hanwu Hu, Nima Ahmadvand
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Patent number: 10368307Abstract: In one embodiment, a method is performed by a wireless station. The method includes receiving from an access point (AP) a request for measurement of at least one link-quality parameter. The method further includes measuring the at least one link-quality parameter to generate a link-quality-parameter measurement. The method also includes determining, for the wireless station, an appropriate wireless-station category of a plurality of wireless-station categories. The plurality of wireless-station categories are defined based at least in part on the link-quality-parameter measurement. In addition, the method includes communicating with the AP in accordance with a transmission schedule corresponding to the plurality of wireless-station categories.Type: GrantFiled: August 21, 2018Date of Patent: July 30, 2019Assignee: Conversant Intellectual Property Management Inc.Inventors: Xuejun Lu, Nima Ahmadvand
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Publication number: 20190013987Abstract: A method includes receiving an Orthogonal Frequency Division Multiplexing (OFDM) signal comprising a plurality of Doppler-shifted OFDM subcarriers and determining frequency-shift data corresponding to the plurality of Doppler-shifted OFDM subcarriers. The determining includes calculating frequency-shift data for each Doppler-shifted OFDM subcarrier of the plurality of Doppler-shifted OFDM subcarriers, thereby yielding a plurality of subcarrier-specific frequency-shift values and calculating an average of the plurality of subcarrier-specific frequency-shift values. The method further includes frequency shifting each subcarrier of the plurality of Doppler-shifted OFDM subcarriers by a value based on the determined frequency-shift data multiplied by a frequency index of each subcarrier.Type: ApplicationFiled: August 30, 2018Publication date: January 10, 2019Inventors: Hanwu HU, Nima AHMADVAND
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Publication number: 20180359701Abstract: In one embodiment, a method is performed by a wireless station. The method includes receiving from an access point (AP) a request for measurement of at least one link-quality parameter. The method further includes measuring the at least one link-quality parameter to generate a link-quality-parameter measurement. The method also includes determining, for the wireless station, an appropriate wireless-station category of a plurality of wireless-station categories. The plurality of wireless-station categories are defined based at least in part on the link-quality-parameter measurement. In addition, the method includes communicating with the AP in accordance with a transmission schedule corresponding to the plurality of wireless-station categories.Type: ApplicationFiled: August 21, 2018Publication date: December 13, 2018Inventors: Xuejun LU, Nima AHMADVAND
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Patent number: 10091044Abstract: A method includes receiving an Orthogonal Frequency Division Multiplexing (OFDM) signal comprising a plurality of Doppler-shifted OFDM subcarriers and determining frequency-shift data corresponding to the plurality of Doppler-shifted OFDM subcarriers. The determining includes calculating frequency-shift data for each Doppler-shifted OFDM subcarrier of the plurality of Doppler-shifted OFDM subcarriers, thereby yielding a plurality of subcarrier-specific frequency-shift values and calculating an average of the plurality of subcarrier-specific frequency-shift values. The method further includes frequency shifting each subcarrier of the plurality of Doppler-shifted OFDM subcarriers by a value based on the determined frequency-shift data multiplied by a frequency index of each subcarrier.Type: GrantFiled: July 16, 2015Date of Patent: October 2, 2018Assignee: CONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC.Inventors: Hanwu Hu, Nima Ahmadvand
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Patent number: 10080188Abstract: In one embodiment, a method is performed by a wireless station. The method includes receiving from an access point (AP) a request for measurement of at least one link-quality parameter. The method further includes measuring the at least one link-quality parameter to generate a link-quality-parameter measurement. The method also includes determining, for the wireless station, an appropriate wireless-station category of a plurality of wireless-station categories. The plurality of wireless-station categories are defined based at least in part on the link-quality-parameter measurement. In addition, the method includes communicating with the AP in accordance with a transmission schedule corresponding to the plurality of wireless-station categories.Type: GrantFiled: February 20, 2015Date of Patent: September 18, 2018Assignee: Conversant Intellectual Property Management Inc.Inventors: Xuejun Lu, Nima Ahmadvand
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Publication number: 20160020936Abstract: A method includes receiving an Orthogonal Frequency Division Multiplexing (OFDM) signal comprising a plurality of Doppler-shifted OFDM subcarriers and determining frequency-shift data corresponding to the plurality of Doppler-shifted OFDM subcarriers. The determining includes calculating frequency-shift data for each Doppler-shifted OFDM subcarrier of the plurality of Doppler-shifted OFDM subcarriers, thereby yielding a plurality of subcarrier-specific frequency-shift values and calculating an average of the plurality of subcarrier-specific frequency-shift values. The method further includes frequency shifting each subcarrier of the plurality of Doppler-shifted OFDM subcarriers by a value based on the determined frequency-shift data multiplied by a frequency index of each subcarrier.Type: ApplicationFiled: July 16, 2015Publication date: January 21, 2016Applicant: CONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC.Inventors: Hanwu HU, Nima AHMADVAND
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Patent number: 9237518Abstract: Power saving in wireless networks is disclosed. A wireless network entity that includes a module to enable a reduction in power consumption in that wireless network entity is also disclosed. The module is configured to determine that a selected wireless station of one or more wireless stations associated with the wireless network entity in a same wireless network will transmit system control information (including synchronization information and service identification information) that is normally transmitted by the wireless network entity.Type: GrantFiled: November 24, 2014Date of Patent: January 12, 2016Assignee: Conversant Intellectual Property Management Inc.Inventors: Nima Ahmadvand, Xuejun Lu, Hanwu Hu, Mouhamadou Lamine Sylla
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Publication number: 20150245236Abstract: In one embodiment, a method is performed by a wireless station. The method includes receiving from an access point (AP) a request for measurement of at least one link-quality parameter. The method further includes measuring the at least one link-quality parameter to generate a link-quality-parameter measurement. The method also includes determining, for the wireless station, an appropriate wireless-station category of a plurality of wireless-station categories. The plurality of wireless-station categories are defined based at least in part on the link-quality-parameter measurement. In addition, the method includes communicating with the AP in accordance with a transmission schedule corresponding to the plurality of wireless-station categories.Type: ApplicationFiled: February 20, 2015Publication date: August 27, 2015Inventors: Xuejun LU, Nima AHMADVAND
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Publication number: 20150078239Abstract: Power saving in wireless networks is disclosed. A wireless network entity that includes a module to enable a reduction in power consumption in that wireless network entity is also disclosed. The module is configured to determine that a selected wireless station of one or more wireless stations associated with the wireless network entity in a same wireless network will transmit system control information (including synchronization information and service identification information) that is normally transmitted by the wireless network entity.Type: ApplicationFiled: November 24, 2014Publication date: March 19, 2015Inventors: Nima Ahmadvand, Xuejun Lu, Hanwu Hu, Mouhamadou Lamine Sylla
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Patent number: 8923180Abstract: Power saving in wireless networks is disclosed. A wireless network entity that includes a module to enable a reduction in power consumption in that wireless network entity is also disclosed. The module is configured to determine that a selected wireless station of one or more wireless stations associated with the wireless network entity in a same wireless network will transmit system control information (including synchronization information and service identification information) that is normally transmitted by the wireless network entity.Type: GrantFiled: January 23, 2013Date of Patent: December 30, 2014Assignee: Conversant Intellectual Property Management IncorporatedInventors: Nima Ahmadvand, Xuejun Lu, Hanwu Hu, Mouhamadou Lamine Sylla
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Publication number: 20140204814Abstract: Power saving in wireless networks is disclosed. A wireless network entity that includes a module to enable a reduction in power consumption in that wireless network entity is also disclosed. The module is configured to determine that a selected wireless station of one or more wireless stations associated with the wireless network entity in a same wireless network will transmit system control information (including synchronization information and service identification information) that is normally transmitted by the wireless network entity.Type: ApplicationFiled: January 23, 2013Publication date: July 24, 2014Applicant: Conversant Intellectual Property Management IncorporatedInventors: Nima Ahmadvand, Xuejun Lu, Hanwu Hu, Mouhamadou Lamine Sylla
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Publication number: 20140092891Abstract: A method and corresponding apparatus for providing a cellular subscriber with access to a WLAN are provided. They involve identifying a multimode mobile terminal, which corresponds to the subscriber and the WLAN from an access request. Based on the identification, the WLAN is authorized to provide the mobile terminal with access. The mobile terminal is then provided with access to the WLAN as a cellular subscriber and enables interoperability between the two networks. For example, the subscriber does not have to supply a credit card to pay for WLAN access directly. Instead, the subscriber pays a cellular network provider, and, in turn, the cellular network provider pays a WLAN provider for the access.Type: ApplicationFiled: December 5, 2013Publication date: April 3, 2014Applicant: MOSAID Technologies IncorporatedInventors: Nima Ahmadvand, Hanwu Hu