Patents by Inventor Samir Kapoor

Samir Kapoor 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: 10993157
    Abstract: Transmission techniques using configurable channels for the downlink and/or uplink are described. In one aspect, the downlink channel and/or uplink channel may be independently selected for a terminal. The terminal may establish a connection with a base station on default downlink and uplink channels. Another downlink channel and/or another uplink channel may be selected based on various factors such as channel quality, loading, and interference. The terminal would then switch to the new downlink and/or uplink channel for communication. In another aspect, the base stations broadcast sector information used by the terminals for communication and/or channel selection. The sector information may include various types of information such as the available downlink and uplink channels, the frequencies of the available channels, the loading on the available channels, and QoS information. The terminals may select a sector, a downlink channel, and/or an uplink channel based on the sector information.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: April 27, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Samir Kapoor, Junyi Li, Rajiv Laroia
  • Publication number: 20190159085
    Abstract: Transmission techniques using configurable channels for the downlink and/or uplink are described. In one aspect, the downlink channel and/or uplink channel may be independently selected for a terminal. The terminal may establish a connection with a base station on default downlink and uplink channels. Another downlink channel and/or another uplink channel may be selected based on various factors such as channel quality, loading, and interference. The terminal would then switch to the new downlink and/or uplink channel for communication. In another aspect, the base stations broadcast sector information used by the terminals for communication and/or channel selection. The sector information may include various types of information such as the available downlink and uplink channels, the frequencies of the available channels, the loading on the available channels, and QoS information.
    Type: Application
    Filed: January 23, 2019
    Publication date: May 23, 2019
    Inventors: Samir KAPOOR, Junyi LI, Rajiv LAROIA
  • Patent number: 10244442
    Abstract: Transmission techniques using configurable channels for the downlink and/or uplink are described. In one aspect, the downlink channel and/or uplink channel may be independently selected for a terminal. The terminal may establish a connection with a base station on default downlink and uplink channels. Another downlink channel and/or another uplink channel may be selected based on various factors such as channel quality, loading, and interference. The terminal would then switch to the new downlink and/or uplink channel for communication. In another aspect, the base stations broadcast sector information used by the terminals for communication and/or channel selection. The sector information may include various types of information such as the available downlink and uplink channels, the frequencies of the available channels, the loading on the available channels, and QoS information. The terminals may select a sector, a downlink channel, and/or an uplink channel based on the sector information.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: March 26, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Samir Kapoor, Junyi Li, Rajiv Laroia
  • Patent number: 9491677
    Abstract: The invention described herein enables a form of downlink macro-diversity in packet-switched cellular networks. It allows packets to be selectively delivered from a network/internetwork to an end node, e.g., a wireless communication device or terminal, over a set of available link-layer connections to/from the end node, through one or more access nodes, e.g., base stations. Downlink macro-diversity is particularly important when the link-layer connections between the end node and the corresponding access node, e.g., the access links, are subject to independent or partially correlated time variations in signal strength and interference. In accordance with the invention, the end node dynamically selects the downlink to be used out of a set of available access links on a per packet basis subject to prevailing channel conditions, availability of air-link resources and other constraints.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: November 8, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: M. Scott Corson, Samir Kapoor, Rajiv Laroia, Vincent D. Park
  • Patent number: 9467958
    Abstract: Techniques for mitigating temporary loss of synchronization in a wireless communication system are described. In an aspect, a cell may periodically broadcast a mode indicator to indicate synchronous operation or asynchronous operation by the cell. The cell may also broadcast its cell identity (ID), which may omit the mode indicator and would then remain unchanged when the cell switches between asynchronous and synchronous operation. In another aspect, the cell may send system time information indicative of its updated system time when switching from asynchronous operation to synchronous operation. The updated system time may be used for communication with terminals after the switch to synchronous operation. In yet another aspect, the cell may decrease its transmit power prior to switching synchronization mode, switch synchronization mode when its transmit power reaches a predetermined power level, and thereafter increase its transmit power.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: October 11, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Alexei Gorokhov, Avneesh Agrawal, Samir Kapoor
  • Publication number: 20160181693
    Abstract: A method and apparatus for interference suppression in wireless communication systems, especially Orthogonal Frequency Division Multiplexed (OFDM) systems, is presented. The array apparatus includes a two-tier adaptive array system, which provides for both spatial diversity and beamforming at the uplink and includes sub-arrays spaced at a distance sufficient to provide spatial diversity and support beamforming or scanning A Direction of Arrival (DOA) of signals impinging upon the array can be calculated by comparing signals from sub-array elements. Each sub-array can be filtered or beamformed to provide high gain to desired signals received from the DOA (which may be a multipath signal) while simultaneously dampening-out undesired signals, such as co-channel interference (CCI) in the frequency band of operation. The DOA is also used for allocating frequency bins for data signals, such as in an OFDM system, to provide weighted guidelines for bin allocation to maximize received signal power.
    Type: Application
    Filed: January 9, 2015
    Publication date: June 23, 2016
    Inventors: Samir Kapoor, Daniel J. Marchok
  • Publication number: 20160183113
    Abstract: Mobile devices implement a ranging mechanism that includes a lead responder receiving ranging measurement requests from two different initiators in the same DW cycle. At the beginning of the DW cycle the lead responder broadcasts and/or publishes a channel availability map that includes a list of slots and channels in which to respond to the ranging measurement requests based on a number of ranging operations supported in each slot within the DW cycle and based on an autonomously determined response sequence. If the lead responder responds to all ranging requests by all initiators in a DW cycle, secondary responders can perform ranging in the same or subsequent DW cycles. Upon exhausting all initiators paired with the lead responder, a secondary responder becomes the “active” responder that is chosen based on a prioritization scheme that is universal among the group of devices in the ranging operation.
    Type: Application
    Filed: December 23, 2014
    Publication date: June 23, 2016
    Inventors: Praveen DUA, Zhifeng CAI, Meghna AGRAWAL, Andrew Mackinnon DAVIDSON, Samir KAPOOR, Amod BODAS
  • Patent number: 9031050
    Abstract: A method includes, at a first device while the first device is connected to a wireless local area network (WLAN) and a second device is unconnected to the WLAN, establishing a secure channel to the second device using an EAP exchange. The method also includes sending at least one credential associated with the WLAN to the second device via the secure channel to enable the second device to connect to the WLAN.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: May 12, 2015
    Inventors: George Cherian, Jouni Malinen, Santosh Paul Abraham, Peerapol Tinnakornsrisuphap, Samir Kapoor, Rolf De Vegt
  • Publication number: 20150103817
    Abstract: Synchronization of communication events according to a global time base (GTB). Devices implementing the GTB may be configured to awaken and exchange discovery and service capability information over pre-scheduled channels at time points determined according to the GTB. The GTB may be correlated to Global Positioning System (GPS) system time. A global time server (GTS) is described for providing a local source of accurate clock time relative to the GTB. The GTS may aggregate multiple sources of absolute and/or relative time including GPS and WWAN, select the most accurate source for a mobile environment, track source state transitions, and manage clock drift. Global time clients (GTCs) may receive updates from the GTS and compute offsets for communication events relative to a local clock. The GTC may correct for transport errors from transmission of the updated global time value across modules or sub-components of the devices.
    Type: Application
    Filed: April 29, 2014
    Publication date: April 16, 2015
    Applicant: QUALCOMM Incorporated
    Inventors: Steven John Kuhn, Lalitaprasad Daita, Samir Kapoor, Ravi Teja Mallajosyula
  • Publication number: 20150103818
    Abstract: Synchronization of communication events according to a global time base (GTB). Devices implementing the GTB may be configured to awaken and exchange discovery and service capability information over pre-scheduled channels at time points determined according to the GTB. The GTB may be correlated to Global Positioning System (GPS) system time. A global time server (GTS) is described for providing a local source of accurate clock time relative to the GTB. The GTS may aggregate multiple sources of absolute and/or relative time including GPS and WWAN, select the most accurate source for a mobile environment, track source state transitions, and manage clock drift. Global time clients (GTCs) may receive updates from the GTS and compute offsets for communication events relative to a local clock. The GTC may correct for transport errors from transmission of the updated global time value across modules or sub-components of the devices.
    Type: Application
    Filed: April 29, 2014
    Publication date: April 16, 2015
    Applicant: QUALCOMM Incorporated
    Inventors: Steven John Kuhn, Lalitaprasad Daita, Samir Kapoor, Ravi Teja Mallajosyula
  • Publication number: 20150071135
    Abstract: Transmission techniques using configurable channels for the downlink and/or uplink are described. In one aspect, the downlink channel and/or uplink channel may be independently selected for a terminal The terminal may establish a connection with a base station on default downlink and uplink channels. Another downlink channel and/or another uplink channel may be selected based on various factors such as channel quality, loading, and interference. The terminal would then switch to the new downlink and/or uplink channel for communication. In another aspect, the base stations broadcast sector information used by the terminals for communication and/or channel selection. The sector information may include various types of information such as the available downlink and uplink channels, the frequencies of the available channels, the loading on the available channels, and QoS information. The terminals may select a sector, a downlink channel, and/or an uplink channel based on the sector information.
    Type: Application
    Filed: November 14, 2014
    Publication date: March 12, 2015
    Inventors: Samir Kapoor, Junyi Li, Rajiv Laroia
  • Patent number: 8934457
    Abstract: A method and apparatus for interference suppression in wireless communication systems, especially Orthogonal Frequency Division Multiplexed (OFDM) systems, is presented. The array apparatus includes a two-tier adaptive array system, which provides for both spatial diversity and beamforming at the uplink and includes sub-arrays spaced at a distance sufficient to provide spatial diversity and support beamforming or scanning. A Direction of Arrival (DOA) of signals impinging upon the array can be calculated by comparing signals from sub-array elements. Each sub-array can be filtered or beamformed to provide high gain to desired signals received from the DOA (which may be a multipath signal) while simultaneously dampening-out undesired signals, such as co-channel interference (CCI) in the frequency band of operation. The DOA is also used for allocating frequency bins for data signals, such as in an OFDM system, to provide weighted guidelines for bin allocation to maximize received signal power.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: January 13, 2015
    Assignee: Tellabs Operations, Inc.
    Inventors: Samir Kapoor, Daniel J. Marchok
  • Patent number: 8917673
    Abstract: Transmission techniques using configurable channels for the downlink and/or uplink are described. In one aspect, the downlink channel and/or uplink channel may be independently selected for a terminal. The terminal may establish a connection with a base station on default downlink and uplink channels. Another downlink channel and/or another uplink channel may be selected based on various factors such as channel quality, loading, and interference. The terminal would then switch to the new downlink and/or uplink channel for communication. In another aspect, the base stations broadcast sector information used by the terminals for communication and/or channel selection. The sector information may include various types of information such as the available downlink and uplink channels, the frequencies of the available channels, the loading on the available channels, and QoS information. The terminals may select a sector, a downlink channel, and/or an uplink channel based on the sector information.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: December 23, 2014
    Assignee: QUALCOMM Incorporation
    Inventors: Samir Kapoor, Junyi Li, Rajiv Laroia
  • Publication number: 20140112402
    Abstract: A multi-point communications system is set forth herein. The communications system comprises a head end unit disposed at a primary site and a plurality of receivers disposed at remote sites. The head end unit includes a transmitter for transmitting OFDM/DMT symbols over a predetermined number of bins across a transmission medium. The OFDM/DMT symbols are transmitted in periodically occurring formatted symbol frames. The cyclic prefix includes a predetermined periodic signal superimposed thereon. The receivers receive the OFDM/DMT symbols over a subset of the predetermined number of bins from the transmission medium and use the superimposed signals to attain symbol alignment. As such, the receivers are designed to process substantially fewer bins than the entire number of bins transmitted by the head end unit.
    Type: Application
    Filed: July 18, 2013
    Publication date: April 24, 2014
    Inventors: DANIEL J. MARCHOK, RICHARD C. YOUNCE, SAMIR KAPOOR, PETER J.W. MELSA
  • Patent number: 8670341
    Abstract: A method and apparatus for providing uplink macro-diversity in packet-switched networks that allows packets and/or portions of packets, e.g., frames, to be selectively sent from an end node, e.g., wireless communication device or mobile terminal, over a set of multiple communication connections, e.g., physical-layer or link-layer connections, to one or more access nodes, e.g., base stations. Uplink macro-diversity is achieved in part through intelligent selective forwarding over multiple communication connections, where the forwarding decision is controlled by the end node based on a variety of factors, e.g., physical-layer channel conditions and/or higher layer policy. The forwarding decision is executed on a rapid timescale, e.g., on a per packet basis, to adapt to the dynamically varying conditions of the set of communication connections.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: March 11, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Mathew S. Corson, Samir Kapoor, Rajiv Laroia, Vincent D. Park
  • Patent number: 8665859
    Abstract: A multi-point communications system is set forth herein. The communications system includes a transmitter for transmitting OFDM/DMT symbols over a predetermined number of bins across a transmission medium. The OFDM/DMT symbols are generated using at least one timing signal. At least one of the predetermined number of bins includes a pilot tone sub-symbol having a frequency corresponding to a clock signal. The communications system may also include a receiver for receiving the OFDM/DMT symbols via the transmission medium. The receiver demodulates the received symbols using at least one timing signal.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: March 4, 2014
    Assignee: Tellabs Operations, Inc.
    Inventors: Daniel J. Marchok, Samir Kapoor, Ravi Chandran
  • Patent number: 8665734
    Abstract: A method and apparatus for providing uplink macro-diversity in packet-switched networks that allows packets and/or portions of packets, e.g., frames, to be selectively sent from an end node, e.g., wireless communication device or mobile terminal, over a set of multiple communication connections, e.g., physical-layer or link-layer connections, to one or more access nodes, e.g., base stations. Uplink macro-diversity is achieved in part through intelligent selective forwarding over multiple communication connections, where the forwarding decision is controlled by the end node based on a variety of factors, e.g., physical-layer channel conditions and/or higher layer policy. The forwarding decision is executed on a rapid timescale, e.g., on a per packet basis, to adapt to the dynamically varying conditions of the set of communication connections.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: March 4, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: M. Scott Corson, Samir Kapoor, Rajiv Laroia, Vincent Park
  • Publication number: 20130286889
    Abstract: A method includes, at a first device while the first device is connected to a wireless local area network (WLAN) and a second device is unconnected to the WLAN, establishing a secure channel to the second device using an EAP exchange. The method also includes sending at least one credential associated with the WLAN to the second device via the secure channel to enable the second device to connect to the WLAN.
    Type: Application
    Filed: October 23, 2012
    Publication date: October 31, 2013
    Inventors: George Cherian, Jouni Malinen, Santosh Paul Abraham, Peerapol Tinnakornsrisuphap, Samir Kapoor, Rolf De Vegt
  • Publication number: 20120219044
    Abstract: A multi-point communications system is set forth herein. The communications system includes a transmitter for transmitting OFDM/DMT symbols over a predetermined number of bins across a transmission medium. The OFDM/DMT symbols are generated using at least one timing signal. At least one of the predetermined number of bins includes a pilot tone sub-symbol having a frequency corresponding to a clock signal. The communications system may also include a receiver for receiving the OFDM/DMT symbols via the transmission medium. The receiver demodulates the received symbols using at least one timing signal.
    Type: Application
    Filed: February 28, 2012
    Publication date: August 30, 2012
    Inventors: Daniel J. Marchok, Samir Kapoor, Ravi Chandran
  • Publication number: 20120134435
    Abstract: A method and apparatus for interference suppression in wireless communication systems, especially Orthogonal Frequency Division Multiplexed (OFDM) systems, is presented. The array apparatus includes a two-tier adaptive array system, which provides for both spatial diversity and beamforming at the uplink The adaptive array and includes sub-arrays spaced at a distance sufficient to provide spatial diversity and support beamforming or scanning A Direction of Arrival (DOA) of signals impinging upon the array can be calculated by comparing signals from sub-array elements. Each sub-array can be filtered or beamformed to provide high gain to desired signals received from the DOA (which may be a multipath signal) while simultaneously dampening-out undesired signals, such as co-channel interference (CCI) in the frequency band of operation. The DOA is also used for allocating frequency bins for data signals, such as in an OFDM system, to provide weighted guidelines for bin allocation to maximize received signal power.
    Type: Application
    Filed: October 7, 2011
    Publication date: May 31, 2012
    Applicant: Tellabs Operations, Inc.
    Inventors: Samir Kapoor, Daniel J. Marchok