Patents by Inventor Rajeev Shorey

Rajeev Shorey 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: 8314718
    Abstract: A method is provided for efficiently processing messages staged for authentication in a security layer of a protocol stack in a wireless vehicle-to-vehicle communication system. The vehicle-to-vehicle communication system includes a host vehicle receiver for receiving messages transmitted by one or more remote vehicles. The host receiver is configured to authenticate received messages in a security layer of a protocol stack. A wireless message broadcast by a remote vehicle is received. The wireless message contains characteristic data of the remote vehicle. The characteristic data is analyzed for determining whether the wireless message is in compliance with a predetermined parameter of the host vehicle. The wireless message is discarded prior to a transfer of the wireless message to the security layer in response to a determination that the wireless message is not in compliance with the predetermined parameter of the host vehicle. Otherwise, the wireless message is transferred to the security layer.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: November 20, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Skanda N Muthaiah, Rajeev Shorey
  • Patent number: 8194550
    Abstract: A vehicle-to-vehicle communications system that employs a challenge/response based process to ensure that information received from a vehicle is reliable. The subject vehicle transmits a challenge question to the suspect vehicle to determine whether the suspect vehicle is a reliable source of information. The process increases a number of tokens in a token bucket for the suspect vehicle if the response to the challenge question is correct, and decreases the number of tokens in the token bucket for the suspect vehicle if the response to the challenge question is incorrect. The subject vehicle accepts a message from the suspect vehicle if the number of tokens in the bucket for the suspect vehicle is greater than a predetermined upper threshold, and discards the message from the suspect vehicle if the number of tokens in the bucket for the suspect vehicle is less than a predetermined lower threshold.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: June 5, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Rajeev Shorey, Anitha Varghese, Bhargav Ramchandra Bellur
  • Patent number: 8090949
    Abstract: A system and method for assigning certificates and reducing the size of the certificate revocation lists in a PKI based architecture for a vehicle wireless communications system that includes separating a country, or other area, into geographic regions and assigning region-specific certificates to the vehicles. Therefore, a vehicle need only process certificates and certificate revocation lists for the particular region that it is traveling in. Vehicles can be assigned multiple certificates corresponding to more than one region in the vehicles vicinity as advance preparation for possible travel or transmission into nearby regions. Further, the expiration time of certificates assigned to vehicles corresponding to a given geographic region can be tailored to be inversely proportional to the distance from a registered home region of the vehicle. A scalable design for a back-end certifying authority with region-based certificates can also be provided.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: January 3, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Bhargav Ramchandra Bellur, Anitha Varghese, Rajeev Shorey, Srinivasan Rajavelu, Aditya R. Karnik
  • Publication number: 20110080302
    Abstract: A method is provided for efficiently processing messages staged for authentication in a security layer of a protocol stack in a wireless vehicle-to-vehicle communication system. The vehicle-to-vehicle communication system includes a host vehicle receiver for receiving messages transmitted by one or more remote vehicles. The host receiver is configured to authenticate received messages in a security layer of a protocol stack. A wireless message broadcast by a remote vehicle is received. The wireless message contains characteristic data of the remote vehicle. The characteristic data is analyzed for determining whether the wireless message is in compliance with a predetermined parameter of the host vehicle. The wireless message is discarded prior to a transfer of the wireless message to the security layer in response to a determination that the wireless message is not in compliance with the predetermined parameter of the host vehicle. Otherwise, the wireless message is transferred to the security layer.
    Type: Application
    Filed: October 2, 2009
    Publication date: April 7, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Skanda N. Muthaiah, Rajeev Shorey
  • Publication number: 20100201543
    Abstract: A vehicle-to-vehicle communications system that employs a challenge/response based process to ensure that information received from a vehicle is reliable. The subject vehicle transmits a challenge question to the suspect vehicle to determine whether the suspect vehicle is a reliable source of information. The process increases a number of tokens in a token bucket for the suspect vehicle if the response to the challenge question is correct, and decreases the number of tokens in the token bucket for the suspect vehicle if the response to the challenge question is incorrect. The subject vehicle accepts a message from the suspect vehicle if the number of tokens in the bucket for the suspect vehicle is greater than a predetermined upper threshold, and discards the message from the suspect vehicle if the number of tokens in the bucket for the suspect vehicle is less than a predetermined lower threshold.
    Type: Application
    Filed: February 9, 2009
    Publication date: August 12, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Rajeev Shorey, Anitha Varghese, Bhargav Ramchandra Bellur
  • Publication number: 20090235071
    Abstract: A system and method for assigning certificates and reducing the size of the certificate revocation lists in a PKI based architecture for a vehicle wireless communications system that includes separating a country, or other area, into geographic regions and assigning region-specific certificates to the vehicles. Therefore, a vehicle need only process certificates and certificate revocation lists for the particular region that it is traveling in. Vehicles can be assigned multiple certificates corresponding to more than one region in the vehicles vicinity as advance preparation for possible travel or transmission into nearby regions. Further, the expiration time of certificates assigned to vehicles corresponding to a given geographic region can be tailored to be inversely proportional to the distance from a registered home region of the vehicle. A scalable design for a back-end certifying authority with region-based certificates can also be provided.
    Type: Application
    Filed: March 13, 2008
    Publication date: September 17, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Bhargav Ramchandra Bellur, Anitha Varghese, Rajeev Shorey, Srinivasan Rajavelu, Aditya R. Karnik
  • Patent number: 7496477
    Abstract: A system and method for providing energy-efficient support of continuous aggregate queries in a sensor network by efficiently orchestrating the collection and transmission of data gathered by a collective set of sensors to ensure conformance to a specified QoI bound. To ensure this, the sink communicates a potentially different value of precision range or interval to each individual sensor, the sensor is adapted to only report its samples back to the sink if the sample values fall outside this specified range. An additional way to specify temporally varying precision ranges to an individual sensor or groups of sensors is provided without having to explicitly communicate the precision bounds for these different time instants. Using temporally varying precision ranges permits the exploitation of temporal correlation among the sample values recorded by an individual sensor to further reduce the need for reports from the sensors.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: February 24, 2009
    Assignee: International Business Machines Corporation
    Inventors: Archan Misra, Rajeev Shorey, Wen Hu
  • Publication number: 20080052041
    Abstract: A system and method for providing energy-efficient support of continuous aggregate queries in a sensor network by efficiently orchestrating the collection and transmission of data gathered by a collective set of sensors to ensure conformance to a specified QoI bound. To ensure this, the sink communicates a potentially different value of precision range or interval to each individual sensor, the sensor is adapted to only report its samples back to the sink if the sample values fall outside this specified range. An additional way to specify temporally varying precision ranges to an individual sensor or groups of sensors is provided without having to explicitly communicate the precision bounds for these different time instants. Using temporally varying precision ranges permits the exploitation of temporal correlation among the sample values recorded by an individual sensor to further reduce the need for reports from the sensors.
    Type: Application
    Filed: October 29, 2007
    Publication date: February 28, 2008
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Archan Misra, Rajeev Shorey, Wen Hu
  • Patent number: 7302362
    Abstract: A system and method for providing energy-efficient support of continuous aggregate queries in a sensor network by efficiently orchestrating the collection and transmission of data gathered by a collective set of sensors to ensure conformance to a specified QoI bound. To ensure this, the sink communicates a potentially different value of precision range or interval to each individual sensor; the sensor is adapted to only report its samples back to the sink if the sample values fall outside this specified range. An additional way to specify temporally varying precision ranges to an individual sensor or groups of sensors is provided without having to explicitly communicate the precision bounds for these different time instants. Using temporally varying precision ranges permits the exploitation of temporal correlation among the sample values recorded by an individual sensor to further reduce the need for reports from the sensors.
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: November 27, 2007
    Assignee: International Business Machines Corporation
    Inventors: Archan Misra, Rajeev Shorey, Wen Hu
  • Publication number: 20070208535
    Abstract: A system and method for providing energy-efficient support of continuous aggregate queries in a sensor network by efficiently orchestrating the collection and transmission of data gathered by a collective set of sensors to ensure conformance to a specified QoI bound. To ensure this, the sink communicates a potentially different value of precision range or interval to each individual sensor; the sensor is adapted to only report its samples back to the sink if the sample values fall outside this specified range. An additional way to specify temporally varying precision ranges to an individual sensor or groups of sensors is provided without having to explicitly communicate the precision bounds for these different time instants. Using temporally varying precision ranges permits the exploitation of temporal correlation among the sample values recorded by an individual sensor to further reduce the need for reports from the sensors.
    Type: Application
    Filed: March 1, 2006
    Publication date: September 6, 2007
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Archan Misra, Rajeev Shorey, Wen Hu
  • Patent number: 7092368
    Abstract: A method for reducing device discovery delays in frequency hopping based ad-hoc networks is disclosed. According to the method, an activity being performed is periodically interrupted to scan for inquiry messages from other devices for a pre-determined period time period. Processing of a received inquiry message, in accordance with normal procedures applicable to the particular frequency hopping based ad-hoc network, occurs after expiry of a random time period. At the end of the predetermined time period, the original activity is returned to. A device for use in frequency hopping based ad-hoc networks that embodies the described method and a computer program product for such a device, are also disclosed.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: August 15, 2006
    Assignee: International Business Machines Corporation
    Inventors: Apurva Kumar, Rajeev Shorey
  • Patent number: 7065482
    Abstract: The present invention relates to a traffic analysis method and tool for a network based on TCP/IP or UDP/IP or a combination thereof comprising passive monitoring means at intermediate nodes of the network, and estimation means to determine a full set of network traffic metrics connected to said passive monitoring means. The instant invention also provides a configured computer program product for carrying out the above method.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: June 20, 2006
    Assignee: International Business Machines Corporation
    Inventors: Rajeev Shorey, Abhinav Kamra, Sundeep Kapila, Varun Khurana, Vikas Yadav
  • Patent number: 6975591
    Abstract: A method for improving TCP throughput over lossy communication links without affecting performance over non-lossy links comprises determining lookahead-loss which is the number of lost packets in a given loss-window; using the loss-window and lookahead-loss to detect congestion in the communication links; and controlling transmission under congestion conditions and under normal conditions, wherein the controlling transmission comprises controlling a size of the loss-window by beginning in a slow-start phase; advancing to a congestion avoidance phase when a slow-start threshold is reached; entering a halt growth phase when the first level of packet loss has been recovered; returning to the congestion avoidance phase when a first level of packet recovery occurs; entering a k-recovery phase when a second level of packet loss occurs. The loss window and slow-start threshold are reduced in half and returned to the congestion avoidance phase when the second level of packet loss has been recovered.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: December 13, 2005
    Assignee: International Business Machines Corporation
    Inventors: Rajeev Shorey, Abhay Chrungoo, Vishu Gupta, Huzur Saran
  • Patent number: 6963534
    Abstract: The present invention relates to a computer implemented system for transferring data over a master driven TDD/TDMA based wireless network operating with minimum delay in end-to-end transmission by achieving optimum time slot utilization by minimizing the number of baseband packets created for each Link layer packet, where each baseband packet of is a size corresponding to one of a permitted set of capacities ‘C1, C2, . . . Cn’. The system also optimizes sharing of bandwidth, higher link utilization and low baseband packet transmission queue occupancy by adaptive scheduling of the transmission of the baseband packets in the queues. The invention also provides a method and computer program product for the above system.
    Type: Grant
    Filed: October 5, 2000
    Date of Patent: November 8, 2005
    Assignee: International Business Machines Corporation
    Inventors: Rajeev Shorey, Ashu Razdan, Abhishek Das, Abhishek Ghose, Huzur Saran
  • Patent number: 6958998
    Abstract: Providing packet-based service differentiation on packet-based networks involves first determining information associated with packets as a basis for inferring connection characteristics associated with the respective packet, as the packets pass though a particular network node. Statistical measures based on numerical values of, for example, Round Trip Time (RTT), is used to characterize connections as being, in this case “long” or “short”. “Long” connections are given a higher priority than “short” connections. Accordingly, the assigned priority associated with particular packets can be used to adjust drop probabilities for those packets.
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: October 25, 2005
    Assignee: International Business Machines Corporation
    Inventor: Rajeev Shorey
  • Patent number: 6807159
    Abstract: A system, method, and computer program product for carrying out the method for managing power consumption in a master driven time division duplex wireless network comprising optimizing power consumption while maintaining quality of service requirements for end-to-end packet delay by adjusting the polling interval for each slave in low power mode based on the incoming traffic at the slave.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: October 19, 2004
    Assignee: International Business Machines Corporation
    Inventors: Rajeev Shorey, Apurva Kumar, Indraneel Chakraborty, Abhishek Kashyap, Anupam Rastogi, Huzur Saran
  • Publication number: 20040037323
    Abstract: A method for reducing device discovery delays in frequency hopping-based ad-hoc networks is disclosed. According to the method, an activity being performed is periodically interrupted to scan for inquiry messages from other devices for a pre-determined time period. Processing of a received inquiry message, in accordance with the normal procedures applicable to the particular frequency hopping based ad-hoc network, occurs after expiry of a random time period. At the end of the pre-determined time period, the original activity is returned to. A device for use in frequency hopping based ad-hoc networks that embodies the described method and a computer program product for such a device, are also disclosed.
    Type: Application
    Filed: February 16, 2001
    Publication date: February 26, 2004
    Applicant: International Business Machines Corporation
    Inventors: Apurva Kumar, Rajeev Shorey
  • Patent number: 6680909
    Abstract: Master-Slave Queue-State-Dependent Packet Scheduling Policies use the information about Master and Slave queues to achieve better system performance. The scheduling methodology is implemented at the Master and therefore has access to information about the Master queues. Different kinds of information about the queues such as backlog, size, delays can be used.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: January 20, 2004
    Assignee: International Business Machines Corporation
    Inventors: Deepak Bansal, Manish Kalia, Rajeev Shorey
  • Publication number: 20030007454
    Abstract: Providing packet-based service differentiation on packet-based networks involves first determining information associated with packets as a basis for inferring connection characteristics associated with the respective packet, as the packets pass though a particular network node. Statistical measures based on numerical values of, for example, Round Trip Time (RTT), is used to characterize connections as being, in this case “long” or “short”. “Long” connections are given a higher priority than “short” connections. Accordingly, the assigned priority associated with particular packets can be used to adjust drop probabilities for those packets.
    Type: Application
    Filed: July 9, 2001
    Publication date: January 9, 2003
    Applicant: International Business Machines Corporation
    Inventor: Rajeev Shorey
  • Publication number: 20020174216
    Abstract: The present invention relates to a traffic analysis method and tool for a network based on TCP/IP or UDP/IP or a combination thereof comprising passive monitoring means at intermediate nodes of the network, and estimation means to determine a full set of network traffic metrics connected to said passive monitoring means.
    Type: Application
    Filed: May 17, 2001
    Publication date: November 21, 2002
    Applicant: International Business Machines Corporation
    Inventors: Rajeev Shorey, Abhinave Kamra, Sundeep Kapila, Varun Khurana, Vikas Yadav