Patents by Inventor Karthik Anantharaman
Karthik Anantharaman 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: 9525992Abstract: The quality of a wireless data connection is used to identify a suitable radio access network on which a wireless multi-mode device camps.Type: GrantFiled: June 3, 2011Date of Patent: December 20, 2016Assignee: Apple Inc.Inventors: Bharath Narasimha Rao, Karthik Anantharaman, Madhusudan Chaudhary
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Patent number: 9490864Abstract: A wireless electronic device having first and second baseband processors is provided. In one suitable arrangement, radio-frequency power splitters and adjustable low noise amplifiers may be form in the receive paths. The use of power splitters allow signals associated with the first and second baseband processors to be received in parallel. In another suitable arrangement, radio-frequency switches are used in place of the power splitters. The states of the switches may be controlled using at least one of the first and second baseband processors. The use of switches instead of power splitters requires that wake periods associated with the first baseband processor and wake periods associated with the second baseband processor are non-overlapping. To ensure minimal wake period collision, a wake period associated with the second baseband processor may be positioned at a midpoint between two successive wake periods associated with the first baseband processor.Type: GrantFiled: May 12, 2014Date of Patent: November 8, 2016Assignee: Apple Inc.Inventors: Syed A. Mujtaba, Madhusudan Chaudhary, Thanigaivelu Elangovan, Karthik Anantharaman, Weiping Dou, Isabel G. Mahe
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Patent number: 9411396Abstract: Adaptive data collection practices in a multi-processor device. The device may include a first processor and a second processor. The first processor may operate in any of a plurality of power states. The first processor may indicate to the second processor when it transitions to a different power state. The second processor may collect information relating to its operation. The second processor may collect the information according to different information collecting modes depending on in which power state the first processor is operating. Less information may be collected in an information collecting mode corresponding to a lower power state of the first processor than in an information collecting mode corresponding to a higher power state of the first processor.Type: GrantFiled: December 20, 2013Date of Patent: August 9, 2016Assignee: Apple Inc.Inventors: Ben-Heng Juang, Arjuna Sivasithambaresan, Jesus A Gutierrez Gomez, Karthik Anantharaman, Srinivasan Nimmala
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Publication number: 20160119752Abstract: Methods and apparatus for dynamic search management in a multi-mode device. In one embodiment, a mobile device performs network search and acquisition by dynamically changing search delays and/or search frequencies. In one implementation, the mobile device adjusts the amount of time allocated for each network search based on e.g., previous network connection history (e.g., previously connected to a home network, previously connected to a roaming network), device conditions, user preferences, geographical information, etc. By focusing search effort on cellular technologies which have a high likelihood of success, the mobile device can greatly improve search time and reduce unnecessary power consumption.Type: ApplicationFiled: October 29, 2015Publication date: April 28, 2016Inventors: Vikram Bhaskara YERRABOMMANAHALLI, Prashant H. VASHI, Madhusudan CHAUDHARY, Brian H. CASSIDY, Karthik ANANTHARAMAN, Bharath Narasimha RAO
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Patent number: 9312943Abstract: A mobile wireless device adapts receive diversity during discontinuous reception based on downlink signal quality, page indicators and page messages. When the downlink signal quality exceeds a pre-determined threshold, the mobile wireless device decodes a page indicator channel through an initial antenna, and otherwise, decodes a paging channel through the initial antenna without decoding the page indicator channel. The mobile wireless device switches to decoding the paging channel through an alternate antenna when a page indicator decodes as an erasure. When a paging message received through a single antenna decodes with an incorrect error checking code, the mobile wireless devices enables receive diversity through multiple antennas for subsequent decoding. The mobile wireless device switches between single antenna reception and multiple antenna reception based on tracking multiple consecutive error checking code failures and successes.Type: GrantFiled: April 9, 2014Date of Patent: April 12, 2016Assignee: Apple Inc.Inventors: Syed A. Mujtaba, Xiaowen Wang, Young Jae Kim, Vinay R. Majjigi, Johnson O. Sebeni, Tahir Shamim, Karthik Anantharaman, Kee-Bong Song, Romain Trilling
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Patent number: 9235406Abstract: Methods and apparatus for accepting software updates without interruption of ongoing services. Various embodiments are adapted for maintaining service continuity in multi-mode devices such as cellular devices. In one exemplary implementation, unlike prior art solutions (which interrupt user identity module software to implement changes to the network access software), unnecessary updates can be postponed or otherwise scheduled so as to minimize or eliminate service or user experience impact.Type: GrantFiled: October 1, 2012Date of Patent: January 12, 2016Assignee: Apple Inc.Inventors: Abhishek Sen, Prashant H. Vashi, Karthik Anantharaman
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Patent number: 9179401Abstract: Methods and apparatus for dynamic search management in a multi-mode device. In one embodiment, a mobile device performs network search and acquisition by dynamically changing search delays and/or search frequencies. In one implementation, the mobile device adjusts the amount of time allocated for each network search based on e.g., previous network connection history (e.g., previously connected to a home network, previously connected to a roaming network), device conditions, user preferences, geographical information, etc. By focusing search effort on cellular technologies which have a high likelihood of success, the mobile device can greatly improve search time and reduce unnecessary power consumption.Type: GrantFiled: March 14, 2013Date of Patent: November 3, 2015Assignee: Apple Inc.Inventors: Vikram B. Yerrabommanahalli, Prashant H. Vashi, Madhusudan Chaudhary, Brian H. Cassidy, Karthik Anantharaman, Bharath Narasimha Rao
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Publication number: 20150110042Abstract: A processor in a mobile wireless device provisions a user identity module (UIM) card in the mobile wireless device in response to a user command. The processor detects a user command to provision the UIM card and reads a provisioning status of the UIM card from a UIM card provisioning status file in the UIM card. When the provisioning status is “not provisioned”, the processor establishes a bearer independent protocol (BIP) data connection to a server in a wireless network and exchanges provisioning data between the server and the UIM card until the UIM card commands the processor to close the BIP data connection. In representative embodiments, the UIM card provisioning status file includes fields for a UIM card provisioning status, a UIM card software version and a UIM card provisioning date/time, and the processor updates the fields during provisioning.Type: ApplicationFiled: September 15, 2014Publication date: April 23, 2015Inventors: Abhishek SEN, Madhusudan CHAUDHARY, Karthik ANANTHARAMAN, Abdul-Munem AL-KHUDAIRI, Prashant H. VASHI
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Patent number: 8929888Abstract: A current location of a mobile system in a wireless network can be determined by using information provided by a base station in communication with the mobile system. The information can include a system identifier (SID) table and a local time offset (LTM_OFF) value and a daylight savings time (DAYLT) value. The SID table is used to provide a mobile country code (MCC) associated with a country in which the mobile device is located. The LTM_OFF value is used to provide a range of longitude values in which the mobile device is located. The current location of the mobile device is based upon at least the range of longitude values and the current country. The current location is used to build an optimized scan list that is used, in turn, to identify and acquire access to the preferred system by a mobile device.Type: GrantFiled: May 18, 2011Date of Patent: January 6, 2015Assignee: Apple Inc.Inventors: Bharath Narasimha Rao, Madhusudan Chaudhary, Karthik Anantharaman
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Patent number: 8838174Abstract: A processor in a mobile wireless device provisions a user identity module (UIM) card in the mobile wireless device in response to a user command. The processor detects a user command to provision the UIM card and reads a provisioning status of the UIM card from a UIM card provisioning status file in the UIM card. When the provisioning status is “not provisioned”, the processor establishes a bearer independent protocol (BIP) data connection to a server in a wireless network and exchanges provisioning data between the server and the UIM card until the UIM card commands the processor to close the BIP data connection. In representative embodiments, the UIM card provisioning status file includes fields for a UIM card provisioning status, a UIM card software version and a UIM card provisioning date/time, and the processor updates the fields during provisioning.Type: GrantFiled: August 29, 2012Date of Patent: September 16, 2014Assignee: Apple Inc.Inventors: Abhishek Sen, Madhusudan Chaudhary, Karthik Anantharaman, Abdul-Munem Al-Khudairi, Prashant H. Vashi
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Patent number: 8831628Abstract: A current location of a mobile system in a wireless network can be determined by using information provided by a base station in communication with the mobile system. The information can include a system identifier (SID) table and a local time offset (LTM_OFF) value and a daylight savings time (DAYLT) value. The SID table is used to provide a mobile country code (MCC) associated with a country in which the mobile device is located. The LTM_OFF value is used to provide a range of longitude values in which the mobile device is located. The current location of the mobile device is based upon at least the range of longitude values and the current country.Type: GrantFiled: May 18, 2011Date of Patent: September 9, 2014Assignee: Apple Inc.Inventors: Bharath Narasimha Rao, Madhusudan Chaudhary, Karthik Anantharaman
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Publication number: 20140242925Abstract: A wireless electronic device having first and second baseband processors is provided. In one suitable arrangement, radio-frequency power splitters and adjustable low noise amplifiers may be form in the receive paths. The use of power splitters allow signals associated with the first and second baseband processors to be received in parallel. In another suitable arrangement, radio-frequency switches are used in place of the power splitters. The states of the switches may be controlled using at least one of the first and second baseband processors. The use of switches instead of power splitters requires that wake periods associated with the first baseband processor and wake periods associated with the second baseband processor are non-overlapping. To ensure minimal wake period collision, a wake period associated with the second baseband processor may be positioned at a midpoint between two successive wake periods associated with the first baseband processor.Type: ApplicationFiled: May 12, 2014Publication date: August 28, 2014Applicant: Apple Inc.Inventors: Syed A. Mujtaba, Madhusudan Chaudhary, Thanigaivelu Elangovan, Karthik Anantharaman, Weiping Dou, Isabel G. Mahe
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Publication number: 20140220916Abstract: A mobile wireless device adapts receive diversity during discontinuous reception based on downlink signal quality, page indicators and page messages. When the downlink signal quality exceeds a pre-determined threshold, the mobile wireless device decodes a page indicator channel through an initial antenna, and otherwise, decodes a paging channel through the initial antenna without decoding the page indicator channel. The mobile wireless device switches to decoding the paging channel through an alternate antenna when a page indicator decodes as an erasure. When a paging message received through a single antenna decodes with an incorrect error checking code, the mobile wireless devices enables receive diversity through multiple antennas for subsequent decoding. The mobile wireless device switches between single antenna reception and multiple antenna reception based on tracking multiple consecutive error checking code failures and successes.Type: ApplicationFiled: April 9, 2014Publication date: August 7, 2014Applicant: Apple Inc.Inventors: Syed A. MUJTABA, Xiaowen WANG, Young Jae KIM, Vinay R. MAJJIGI, Johnson O. SEBENI, Tahir SHAMIM, Karthik ANANTHARAMAN, Kee-Bong SONG, Romain TRILLING
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Mobile device which deletes duplicate preferred roaming list system records for improved performance
Patent number: 8798590Abstract: A User Equipment (UE) device and associated method for operating a User Equipment (UE) in a wireless communication system. The UE may store a preferred roaming list in a memory. The preferred roaming list may comprise a plurality of system records which specify radio access technologies that can be used by the UE. The UE may examine the preferred roaming list to delete any duplicate system records in the PRL for respective geographic locations (GEOs). This may operate to mitigate the problems created by duplicate listing of system records within the PRL. In particular, the removal of redundant system records within the PRL may reduce or eliminate unneeded or undesired BSR algorithm execution. In addition, the removal of redundant system records within the PRL may reduce temporal service outages, since no service origination is allowed while the UE is attempting to find the most preferred system.Type: GrantFiled: November 16, 2012Date of Patent: August 5, 2014Assignee: Apple Inc.Inventors: Prashant H Vashi, Vikram B Yerrabommanahalli, Karthik Anantharaman -
Publication number: 20140181471Abstract: Adaptive data collection practices in a multi-processor device. The device may include a first processor and a second processor. The first processor may operate in any of a plurality of power states. The first processor may indicate to the second processor when it transitions to a different power state. The second processor may collect information relating to its operation. The second processor may collect the information according to different information collecting modes depending on in which power state the first processor is operating. Less information may be collected in an information collecting mode corresponding to a lower power state of the first processor than in an information collecting mode corresponding to a higher power state of the first processor.Type: ApplicationFiled: December 20, 2013Publication date: June 26, 2014Applicant: APPLE INC.Inventors: Ben-Heng Juang, Arjuna Sivasithambaresan, Jesus A. Gutierrez Gomez, Karthik Anantharaman, Srinivasan Nimmala
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Patent number: 8743852Abstract: A wireless electronic device having first and second baseband processors is provided. In one suitable arrangement, radio-frequency power splitters and adjustable low noise amplifiers may be form in the receive paths. The use of power splitters allow signals associated with the first and second baseband processors to be received in parallel. In another suitable arrangement, radio-frequency switches are used in place of the power splitters. The states of the switches may be controlled using at least one of the first and second baseband processors. The use of switches instead of power splitters requires that wake periods associated with the first baseband processor and wake periods associated with the second baseband processor are non-overlapping. To ensure minimal wake period collision, a wake period associated with the second baseband processor may be positioned at a midpoint between two successive wake periods associated with the first baseband processor.Type: GrantFiled: January 11, 2012Date of Patent: June 3, 2014Assignee: Apple Inc.Inventors: Syed A. Mujtaba, Madhusudan Chaudhary, Thanigaivelu Elangovan, Karthik Anantharaman, Weiping Dou, Isabel G. Mahe
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Patent number: 8737991Abstract: A current location of a mobile system in a wireless network can be determined by using information provided by a base station in communication with the mobile system. The location information can be used to index a GEO Locate Table to determine a list of SIDs to populate an optimized scan list. The optimized scan list being used for system selection.Type: GrantFiled: May 18, 2011Date of Patent: May 27, 2014Assignee: Apple Inc.Inventors: Bharath Narasimha Rao, Madhusudan Chaudhary, Karthik Anantharaman
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Patent number: 8737280Abstract: A mobile wireless device adapts receive diversity during discontinuous reception based on downlink signal quality, page indicators and page messages. When the downlink signal quality exceeds a pre-determined threshold, the mobile wireless device decodes a page indicator channel through an initial antenna, and otherwise, decodes a paging channel through the initial antenna without decoding the page indicator channel. The mobile wireless device switches to decoding the paging channel through an alternate antenna when a page indicator decodes as an erasure. When a paging message received through a single antenna decodes with an incorrect error checking code, the mobile wireless devices enables receive diversity through multiple antennas for subsequent decoding. The mobile wireless device switches between single antenna reception and multiple antenna reception based on tracking multiple consecutive error checking code failures and successes.Type: GrantFiled: September 13, 2011Date of Patent: May 27, 2014Assignee: Apple Inc.Inventors: Syed A. Mujtaba, Kee-Bong Song, Xiaowen Wang, Young Jae Kim, Vinay R. Majjigi, Johnson O. Sebeni, Romain Trilling, Tahir Shamim, Karthik Anantharaman
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Mobile Device Which Deletes Duplicate Preferred Roaming List System Records for Improved Performance
Publication number: 20140011497Abstract: A User Equipment (UE) device and associated method for operating a User Equipment (UE) in a wireless communication system. The UE may store a preferred roaming list in a memory. The preferred roaming list may comprise a plurality of system records which specify radio access technologies that can be used by the UE. The UE may examine the preferred roaming list to delete any duplicate system records in the PRL for respective geographic locations (GEOs). This may operate to mitigate the problems created by duplicate listing of system records within the PRL. In particular, the removal of redundant system records within the PRL may reduce or eliminate unneeded or undesired BSR algorithm execution. In addition, the removal of redundant system records within the PRL may reduce temporal service outages, since no service origination is allowed while the UE is attempting to find the most preferred system.Type: ApplicationFiled: November 16, 2012Publication date: January 9, 2014Applicant: APPLE INC.Inventors: Prashant H. Vashi, Vikram B. Yerrabommanahalli, Karthik Anantharaman -
Publication number: 20130295997Abstract: A processor in a mobile wireless device provisions a user identity module (UIM) card in the mobile wireless device in response to a user command. The processor detects a user command to provision the UIM card and reads a provisioning status of the UIM card from a UIM card provisioning status file in the UIM card. When the provisioning status is “not provisioned”, the processor establishes a bearer independent protocol (BIP) data connection to a server in a wireless network and exchanges provisioning data between the server and the UIM card until the UIM card commands the processor to close the BIP data connection. In representative embodiments, the UIM card provisioning status file includes fields for a UIM card provisioning status, a UIM card software version and a UIM card provisioning date/time, and the processor updates the fields during provisioning.Type: ApplicationFiled: August 29, 2012Publication date: November 7, 2013Applicant: Apple Inc.Inventors: Abhishek SEN, Madhusudan Chaudhary, Karthik Anantharaman, Abdul-Munem Al-Khudairi, Prashant H. Vashi