Patents by Inventor Anand Subramaniam

Anand Subramaniam 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).

  • Patent number: 10592153
    Abstract: Items within a data set can be redistributed to different partitions of a distributed data store according to modified hash values. A redistribution event may, in some embodiments, trigger the redistribution of a data set. Modified hash values for items in the data set may be generated according to a secondary hashing scheme to be used for identifying the location of a new partition to store the item instead of hash values based on current key values that identify a current partition that stores the item. Access can be provided to items based on the modified hash values to determine the new partition that stores the item after redistribution.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: March 17, 2020
    Assignee: Amazon Technologies, Inc.
    Inventors: Naveen Anand Subramaniam, Jacob Shannan Carr, Aaron Ben Fernandes, Gaurav Gupta, Brian Thomas Kachmarck
  • Patent number: 10496935
    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for system modernization using machine learning are disclosed. In one aspect, a method includes the actions of generating training data. The actions include generating a first model, a second model, and a third model. The actions include receiving data that is related to technological capabilities of an application and data that is related to business priorities of the application. The actions include applying the first model to the data that is related to the technological capabilities of the application and the second model to the data that is related to business priorities of the application. The actions include generating a modification recommendation for the application. The actions further include providing, for output, the modification recommendation for the application. The actions include receiving feedback data that indicates a level of acceptance of the modification recommendation for the application.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: December 3, 2019
    Assignee: Accenture Global Solutions Limited
    Inventors: Ravi Sachdev, Pramodsing Bijani, Mahesh Bandkar, Anand Parulkar, Ravichandran Subramaniam
  • Patent number: 10462057
    Abstract: A computing resource service provider may provide customers with access to various services provided by a set of service endpoints. During certain intervals of time increased network traffic may cause an increase in the consumption of computing resources of the set of service endpoints. A throttling trigger may be detected that may cause one or more routing devices to reroute network traffic to one or more lower tier routing devices. The lower tier routing devices may maintain throttling information and forward network traffic to the set of service endpoints.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: October 29, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Brian Kachmarck, Naveen Anand Subramaniam, Jacob Shannan Carr, Aaron Ben Fernandes, Gaurav Gupta
  • Patent number: 7881245
    Abstract: To broadcast different types of transmission having different tiers of coverage in a wireless broadcast network, each base station processes data for a wide-area transmission in accordance with a first mode (or coding and modulation scheme) to generate data symbols for the wide-area transmission and processes data for a local transmission in accordance with a second mode to generate data symbols for the local transmission. The first and second modes are selected based on the desired coverage for wide-area and local transmissions, respectively. The base station also generates pilots and overhead information for local and wide-area transmissions. The data, pilots, and overhead information for local and wide-area transmissions are multiplexed onto their transmission spans, which may be different sets of frequency subbands, different time segments, or different groups of subbands in different time segments. More than two different types of transmission may also be multiplexed and broadcast.
    Type: Grant
    Filed: July 20, 2009
    Date of Patent: February 1, 2011
    Assignee: QUALCOMM Incorporated
    Inventors: Rajiv Vijayan, Fuyun Ling, Gordon Kent Walker, Ramaaswamy Murali, Ashok Mantravadi, Anand Subramaniam, Krishnamurthy Viswanathan, legal representative
  • Publication number: 20100098032
    Abstract: To broadcast different types of transmission having different tiers of coverage in a wireless broadcast network, each base station processes data for a wide-area transmission in accordance with a first mode (or coding and modulation scheme) to generate data symbols for the wide-area transmission and processes data for a local transmission in accordance with a second mode to generate data symbols for the local transmission. The first and second modes are selected based on the desired coverage for wide-area and local transmissions, respectively. The base station also generates pilots and overhead information for local and wide-area transmissions. The data, pilots, and overhead information for local and wide-area transmissions are multiplexed onto their transmission spans, which may be different sets of frequency subbands, different time segments, or different groups of subbands in different time segments. More than two different types of transmission may also be multiplexed and broadcast.
    Type: Application
    Filed: December 23, 2009
    Publication date: April 22, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Rajiv Vijayan, Fuyun Ling, Gordon Kent Walker, Ramaswamy Murali, Ashok Mantravadi, Anand Subramaniam, Krishnamurthy Viswanathan
  • Patent number: 7660275
    Abstract: To broadcast different types of transmission having different tiers of coverage in a wireless broadcast network, each base station processes data for a wide-area transmission in accordance with a first mode (or coding and modulation scheme) to generate data symbols for the wide-area transmission and processes data for a local transmission in accordance with a second mode to generate data symbols for the local transmission. The first and second modes are selected based on the desired coverage for wide-area and local transmissions, respectively. The base station also generates pilots and overhead information for local and wide-area transmissions. The data, pilots, and overhead information for local and wide-area transmissions are multiplexed onto their transmission spans, which may be different sets of frequency subbands, different time segments, or different groups of subbands in different time segments. More than two different types of transmission may also be multiplexed and broadcast.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: February 9, 2010
    Assignee: QUALCOMM Incorporated
    Inventors: Rajiv Vijayan, Fuyun Ling, Gordon Kent Walker, Ramaswamy Murali, Ashok Mantravadi, Anand Subramaniam, Krishnamurthy Viswanathan, legal representative
  • Publication number: 20090279471
    Abstract: To broadcast different types of transmission having different tiers of coverage in a wireless broadcast network, each base station processes data for a wide-area transmission in accordance with a first mode (or coding and modulation scheme) to generate data symbols for the wide-area transmission and processes data for a local transmission in accordance with a second mode to generate data symbols for the local transmission. The first and second modes are selected based on the desired coverage for wide-area and local transmissions, respectively. The base station also generates pilots and overhead information for local and wide-area transmissions. The data, pilots, and overhead information for local and wide-area transmissions are multiplexed onto their transmission spans, which may be different sets of frequency subbands, different time segments, or different groups of subbands in different time segments. More than two different types of transmission may also be multiplexed and broadcast.
    Type: Application
    Filed: July 20, 2009
    Publication date: November 12, 2009
    Applicant: QUALCOMM INCORPORATED
    Inventors: Rajiv Vijayan, Fuyun Ling, Gordon Kent Walker, Ramaaswamy Murali, Ashok Mantravadi, Anand Subramaniam, Krishnamurthy Viswanathan
  • Patent number: 7477693
    Abstract: Techniques to derive a channel estimate using substantially fewer number of complex multiplications than with a brute-force method to derive the same channel estimate. In one method, an intermediate vector B is initially derived based on K sub-vectors of a vector ? for a channel frequency response estimate and at least two DFT sub-matrices for a DFT matrix {tilde over (W)}, where K>1. An intermediate matrix A for the DFT matrix {tilde over (W)} is also obtained. A least square channel impulse response estimate is then derived based on the intermediate vector B and the intermediate matrix A. In one implementation, the intermediate vector B is obtained by first computing DFTs of a matrix ?T×L, which is formed based on the vector ?, to provide a matrix GL×L. Inner products between the columns of a base DFT sub-matrix W1 and the rows of the matrix GL×L are then computed to obtain the entries of the intermediate vector B.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: January 13, 2009
    Assignee: QUALCOMM Incorporated
    Inventors: Anand Subramaniam, Tamer Kadous
  • Publication number: 20070225974
    Abstract: According to the invention, quantization encoding is conducted using the probability density function of the source, enabling fixed, variable and adaptive rate encoding. To achieve adaptive encoding, an update is conducted with a new observation of the data source, preferably with each new observation of the data source. The current probability density function of the source is then estimated to produce codepoints to vector quantize the observation of the data source.
    Type: Application
    Filed: May 16, 2007
    Publication date: September 27, 2007
    Inventors: Anand Subramaniam, Bhaskar Rao
  • Publication number: 20070211811
    Abstract: Techniques to derive a channel estimate using substantially fewer number of complex multiplications than with a brute-force method to derive the same channel estimate. In one method, an intermediate vector B is initially derived based on K sub-vectors of a vector ? for a channel frequency response estimate and at least two DFT sub-matrices for a DFT matrix {tilde over (W)}, where K>1. An intermediate matrix A for the DFT matrix {tilde over (W)} is also obtained. A least square channel impulse response estimate is then derived based on the intermediate vector B and the intermediate matrix A. In one implementation, the intermediate vector B is obtained by first computing DFTs of a matrix ?T×L, which is formed based on the vector ?, to provide a matrix GL×L. Inner products between the columns of a base DFT sub-matrix W1 and the rows of the matrix GL×L are then computed to obtain the entries of the intermediate vector B.
    Type: Application
    Filed: May 16, 2007
    Publication date: September 13, 2007
    Inventors: Anand Subramaniam, Tamer Kadous
  • Patent number: 7236535
    Abstract: Techniques to derive a channel estimate using substantially fewer number of complex multiplications than with a brute-force method to derive the same channel estimate. In one method, an intermediate vector B is initially derived based on K sub-vectors of a vector {circumflex over (H)} for a channel frequency response estimate and at least two DFT sub-matrices for a DFT matrix {tilde over (W)}, where K>1. An intermediate matrix A for the DFT matrix {tilde over (W)} is also obtained. A least square channel impulse response estimate is then derived based on the intermediate vector B and the intermediate matrix A. In one implementation, the intermediate vector B is obtained by first computing DFTs of a matrix ?T×L, which is formed based on the vector {circumflex over (H)}, to provide a matrix GL×L. Inner products between the columns of a base DFT sub-matrix W1 and the rows of the matrix GL×L are then computed to obtain the entries of the intermediate vector B.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: June 26, 2007
    Assignee: QUALCOMM Incorporated
    Inventors: Anand Subramaniam, Tamer Kadous
  • Publication number: 20060269009
    Abstract: Pilot and data transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation are provided. Subband multiplexing is used to avoid interference resulting from transmitting multiple signals simultaneously from multiple antennas. M usable subbands are initially arranged to form multiple groups of subbands, with each group including a different subset of the usable subbands. Each of T transmit antennas is then assigned one or possibly more subband groups for pilot transmission and typically one subband group for data transmission. Pilot and data may then be transmitted from each antenna on the subbands assigned to that antenna for pilot and data transmission. For each transmit antenna, the transmit power for each assigned subband may be scaled higher such that all of the total transmit power available for the antenna is used for transmission. Pilot and/or data may be transmitted simultaneously from all T antennas on all usable subbands without causing mutual interference.
    Type: Application
    Filed: August 7, 2006
    Publication date: November 30, 2006
    Inventors: Ranganathan Krishnan, Anand Subramaniam, Tamer Kadous
  • Publication number: 20050215264
    Abstract: Techniques are provided to support successive interference cancellation (SIC) receiver processing with selection diversity whereby each of NT transmit antennas may be turned on or off. One symbol stream may be transmitted from each transmit antenna. A SIC receiver recovers the transmitted symbol streams in a specific order. Up to NT! orderings are evaluated. For each ordering, NT post-detection SNRs are obtained for NT transmit antennas and used to determine NT data rates, where the data rate is zero if the post-detection SNR is worse than a minimum required SNR. An overall data rate is computed for each ordering based on the NT data rates. The ordering with the highest overall data rate is selected for use. Up to NT symbol streams are processed at the data rates for the selected ordering and transmitted. The transmitted symbol streams are recovered in accordance with the selected ordering.
    Type: Application
    Filed: May 24, 2005
    Publication date: September 29, 2005
    Inventors: Anand Subramaniam, Tamer Kadous
  • Patent number: 6950936
    Abstract: Methods, signals, devices, and systems are provided for secure access to a network from an external client. Requests for access to confidential data may be redirected from a target server to a border server, after which a secure sockets layer connection between the border server and the external client carries user authentication information. After the user is authenticated to the network, requests may be redirected back to the original target server. Web pages sent from the target server to the external client are scanned for non-secure URLs such as those containing “http://” and modified to make them secure. The target server and the border server utilize various combinations of secure and non-secure caches. Although tunneling, may be used, the extensive configuration management burdens imposed by virtual private networks are not required.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: September 27, 2005
    Assignee: Novell, Inc.
    Inventors: Anand Subramaniam, Hashem M Ebrahimi
  • Publication number: 20050163083
    Abstract: Accordingly, a method and apparatus are provided to convert received content into a first stream and a second stream, to transmit said first stream using a first tone and to transmit said second stream using an orthogonal scheme. A layering scheme is used to transmit the base stream covering a smaller area and an enhanced stream is used to cover a large utilizing orthogonal scheme.
    Type: Application
    Filed: January 28, 2005
    Publication date: July 28, 2005
    Inventors: Ashok Mantravadi, Anand Subramaniam, Krishnomunby Viswanachan, Dhananjay Gore
  • Publication number: 20050122928
    Abstract: To broadcast different types of transmission having different tiers of coverage in a wireless broadcast network, each base station processes data for a wide-area transmission in accordance with a first mode (or coding and modulation scheme) to generate data symbols for the wide-area transmission and processes data for a local transmission in accordance with a second mode to generate data symbols for the local transmission. The first and second modes are selected based on the desired coverage for wide-area and local transmissions, respectively. The base station also generates pilots and overhead information for local and wide-area transmissions. The data, pilots, and overhead information for local and wide-area transmissions are multiplexed onto their transmission spans, which may be different sets of frequency subbands, different time segments, or different groups of subbands in different time segments. More than two different types of transmission may also be multiplexed and broadcast.
    Type: Application
    Filed: October 18, 2004
    Publication date: June 9, 2005
    Inventors: Rajiv Vijayan, Fuyun Ling, Gordon Walker, Ramaswamy Murali, Ashok Mantravadi, Anand Subramaniam, Krishnamurthy Viswanathan
  • Publication number: 20050075073
    Abstract: Techniques are provided to support successive interference cancellation (SIC) receiver processing with selection diversity whereby each of NT transmit antennas may be turned on or off. One symbol stream may be transmitted from each transmit antenna. A SIC receiver recovers the transmitted symbol streams in a specific order. Up to NT! orderings are evaluated. For each ordering, NT post-detection SNRs are obtained for NT transmit antennas and used to determine NT data rates, where the data rate is zero if the post-detection SNR is worse than a minimum required SNR. An overall data rate is computed for each ordering based on the NT data rates. The ordering with the highest overall data rate is selected for use. Up to NT symbol streams are processed at the data rates for the selected ordering and transmitted. The transmitted symbol streams are recovered in accordance with the selected ordering.
    Type: Application
    Filed: September 23, 2003
    Publication date: April 7, 2005
    Inventors: Tamer Kadous, Anand Subramaniam
  • Publication number: 20040146117
    Abstract: Techniques to derive a channel estimate using substantially fewer number of complex multiplications than with a brute-force method to derive the same channel estimate. In one method, an intermediate vector B is initially derived based on K sub-vectors of a vector {circumflex over (H)} for a channel frequency response estimate and at least two DFT sub-matrices for a DFT matrix {tilde over (W)}, where K>1. An intermediate matrix A for the DFT matrix {tilde over (W)} is also obtained. A least square channel impulse response estimate is then derived based on the intermediate vector B and the intermediate matrix A. In one implementation, the intermediate vector B is obtained by first computing DFTs of a matrix ĤT×L, which is formed based on the vector {circumflex over (H)}, to provide a matrix GL×L. Inner products between the columns of a base DFT sub-matrix W1 and the rows of the matrix GL×L are then computed to obtain the entries of the intermediate vector B.
    Type: Application
    Filed: October 22, 2003
    Publication date: July 29, 2004
    Inventors: Anand Subramaniam, Tamer Kadous
  • Publication number: 20040049702
    Abstract: Methods, signals, devices, and systems are provided for secure access to a network from an external client. Requests for access to confidential data may be redirected from a target server to a border server, after which a secure sockets layer connection between the border server and the external client carries user authentication information. After the user is authenticated to the network, requests may be redirected back to the original target server. Web pages sent from the target server to the external client are scanned for non-secure URLs such as those containing “http.//” and modified to make them secure. The target server and the border server utilize various combinations of secure and non-secure caches. Although tunneling, may be used, the extensive configuration management burdens imposed by virtual private networks are not required.
    Type: Application
    Filed: August 28, 2003
    Publication date: March 11, 2004
    Applicant: Novell, Inc.
    Inventors: Anand Subramaniam, Hashem M. Ebrahimi
  • Patent number: 6640302
    Abstract: Methods, signals, devices, and systems are provided for secure access to a network from an external client. Requests for access to confidential data may be redirected from a target server to a border server, after which a secure sockets layer connection between the border server and the external client carries user authentication information. After the user is authenticated to the network, requests may be redirected back to the original target server. Web pages sent from the target server to the external client are scanned for non-secure URLs such as those containing “http://” and modified to make them secure. The target server and the border server utilize various combinations of secure and non-secure caches. Although tunneling may be used, the extensive configuration management burdens imposed by virtual private networks are not required.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: October 28, 2003
    Assignee: Novell, Inc.
    Inventors: Anand Subramaniam, Hashem M Ebrahimi