Patents by Inventor Sumeet Sandhu

Sumeet Sandhu 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).

  • Publication number: 20080198760
    Abstract: Various embodiments are described for a trained data transmission for communication systems.
    Type: Application
    Filed: April 24, 2008
    Publication date: August 21, 2008
    Applicant: INTEL CORPORATION
    Inventors: Adrian P. Stephens, Eric A. Jacobsen, Duncan M. Kitchin, Sumeet Sandhu
  • Patent number: 7394858
    Abstract: In an orthogonal frequency division multiplexed (OFDM) system, a transmitter and/or receiver communicate separate data streams on non-orthogonal spatial channels. Each spatial channel may use the same set of OFDM subcarriers and may take advantage of the multipath characteristics of the spatial channel allowing the communication of additional data without an increase in frequency bandwidth. Space-frequency subcarrier modulation assignments may be dynamically assigned on a per subcarrier basis as well as a per spatial channel basis to help maximize the data-carrying capacity of the channel. In some embodiments, each of the spatial channels may be associated with one of a plurality of spatially diverse antennas. In other embodiments, beamforming may be performed to allow the transmission and/or reception of signals within the spatial channels.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: July 1, 2008
    Assignee: Intel Corporation
    Inventors: John S. Sadowsky, Minnie Ho, Sumeet Sandhu, Alexander A. Maltsev, Eric A. Jacobsen, Ali S Sadri
  • Publication number: 20080123574
    Abstract: Embodiments herein may operate at a cooperating relay station (CRS) in a wireless packet-carrying network (WPCN). A source-to-CRS (SC) link quality of an SC wireless channel may be estimated using signal quality information derived from a packet transmitted by a source station and received by the CRS. A CRS-to-destination (CD) link quality of a CD wireless channel may also be estimated using signal quality information derived from a packet transmitted by a destination station and received by the CRS. A source-to-destination (SD) link quality parameter representing SD link quality may be extracted by the CRS from the packet transmitted by the destination station. The CRS may decide whether to participate with the source station or with another CRS in transmitting an SD packet based upon the SC link quality, the CD link quality, the SD link quality, or a combination thereof. Other embodiments may be described and claimed.
    Type: Application
    Filed: November 27, 2006
    Publication date: May 29, 2008
    Inventors: Sumeet Sandhu, Ozgur Oyman, Timothy F. Cox
  • Patent number: 7373112
    Abstract: Various embodiments are described for a trained data transmission for communication systems.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: May 13, 2008
    Assignee: Intel Corporation
    Inventors: Adrian P. Stephens, Eric A. Jacobsen, Duncan M. Kitchin, Sumeet Sandhu
  • Publication number: 20080080436
    Abstract: Methods, protocols and systems for communicating in a multi-hop wireless mesh network may include explicitly providing information relating to backhaul wireless link qualities in multi-hop wireless mesh network to next generation subscriber stations in a first mode. In a second mode, embodiments are configured to implicitly provide indicia of multi-hop wireless link qualities to legacy subscriber stations by adjusting a transmit power of frames sent to the legacy subscriber stations. Other embodiments and variations are described in the detailed description.
    Type: Application
    Filed: September 29, 2006
    Publication date: April 3, 2008
    Inventors: Sumeet Sandhu, Ozgur Oyman
  • Publication number: 20080080440
    Abstract: Methods, protocols and systems for communicating in a multi-hop wireless mesh network may use cooperative diversity transmission techniques in combination with mesh routing. In one example, a cooperation layer may be integrated with MAC and/or PHY layers and generate a plurality of virtual interfaces for use by a mesh routing layer. The plurality of virtual interfaces may include a first interface type defining potential mesh nodes that can be reached without using cooperative diversity transmission techniques, a second interface type defining potential mesh nodes that can be reached by cooperatively transmitting with one neighbor node, and a third interface type defining potential mesh nodes that can be reached by cooperatively transmitting with combinations of two or more neighbor nodes. The mesh routing layer may select which interface to use in determining multi-hop routing based on a range and/or cost metric of a particular virtual interface.
    Type: Application
    Filed: September 30, 2006
    Publication date: April 3, 2008
    Inventors: Mark D. Yarvis, Sumeet Sandhu, W. Steven Conner
  • Patent number: 7349720
    Abstract: In a wireless device having multiple receive antennas, wireless medium sensing operations are performed using a reduced number of receive antennas. Receive chains associated with unused receive antennas are deactivated to reduce power consumption within the device.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: March 25, 2008
    Assignee: Intel Corporation
    Inventor: Sumeet Sandhu
  • Patent number: 7336719
    Abstract: The present invention provides a diversity transmission system. The diversity transmission system includes a method and system of diversity transmission through a wireless channel formed between multiple transmission antennae of a transceiver and a subscriber unit. The method includes forming a stream of symbols from an incoming data stream. A plurality of the symbols are selected forming a data vector. A maximum delay spread through the wireless channel is determined. The maximum delay spread is generally determined as a multiple of a sample time spacing between elements of the data vector. A plurality of diversity vectors are generated based upon the data vector and the maximum delay spread, each diversity vector includes a plurality of elements. Corresponding elements of the diversity vectors are simultaneously transmitted, each diversity vector transmitted from at least one corresponding antenna of a plurality of spatially separate antennae.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: February 26, 2008
    Assignee: Intel Corporation
    Inventors: Dhananjay Gore, Sumeet Sandhu, Shilpa Talwar, Arogyaswami J. Paulraj
  • Publication number: 20080014884
    Abstract: Multiple wireless user devices act cooperatively to communicate with a remote destination node through a MIMO channel. In at least one embodiment, a cooperative cluster of user devices is formed that makes use of vertical coding techniques to achieve enhanced communication performance.
    Type: Application
    Filed: July 14, 2006
    Publication date: January 17, 2008
    Inventors: Ozgur Oyman, Sumeet Sandhu
  • Patent number: 7289585
    Abstract: A multicarrier receiver includes spatial channel decouplers to separate signal components that are separately transmitted with more than one transmit antenna or over more than one spatial channel.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: October 30, 2007
    Assignee: Intel Corporation
    Inventors: Sumeet Sandhu, Lei Shao
  • Publication number: 20070076649
    Abstract: A cooperative communications manager module establishes a first wireless link with a client device using a first channel frequency and dispatches a first message to the client device over the first channel frequency. The cooperative communications manager module establishes a second wireless link with a destination node and controls the cooperative transmission of the first message simultaneously with the client device to the destination node over the second wireless link using a second channel frequency. Other embodiments are described and claimed.
    Type: Application
    Filed: September 30, 2005
    Publication date: April 5, 2007
    Inventors: Xintian Lin, Qinghua Li, Sumeet Sandhu
  • Publication number: 20070053338
    Abstract: An embodiment of the present invention provides an apparatus, comprising a node capable of cooperating in a distributed communication wireless network and wherein the cooperation is based upon predetermined fairness criteria. In an embodiment of the present invention the predetermined fairness criteria may include algorithms that account for battery life and quality of service (QoS). The wireless network may be a centralized network or de-centralized network.
    Type: Application
    Filed: September 2, 2005
    Publication date: March 8, 2007
    Inventors: Sumeet Sandhu, Mark Yarvis, Xintian Lin, Prasanna Mulgaonkar
  • Publication number: 20070041345
    Abstract: Embodiments of methods and apparatus for providing an integrated multi-hop routing and cooperative diversity system are generally described herein. Other embodiments may be described and claimed.
    Type: Application
    Filed: August 17, 2005
    Publication date: February 22, 2007
    Inventors: Mark Yarvis, Sumeet Sandhu, W. Conner
  • Publication number: 20060270363
    Abstract: Partial channel information is used to weight signals being transmitted by cooperating nodes within a cooperative diversity arrangement. In at least one embodiment, the phase of the complex conjugate of a channel coefficient between a cooperating node and a remote device is used to weight a transmit signal.
    Type: Application
    Filed: May 19, 2005
    Publication date: November 30, 2006
    Inventors: Sumeet Sandhu, Prasanna Mulgaonkar
  • Publication number: 20060262758
    Abstract: Methods and devices for wireless networks for extending the communications range of an originating device without increasing its transmit power or bandwidth. An originating device may include signaling in a physical (PHY) layer packet such that peer network devices may know to retransmit the received packet substantially in synchronization with one another. The subsequent and substantially simultaneous transmission of the original signal by peer network devices may effectively increase the range of the originating device so a transmission may reach its destination. Various embodiments and implementations are also disclosed.
    Type: Application
    Filed: May 17, 2005
    Publication date: November 23, 2006
    Inventors: Sumeet Sandhu, Boyd Bangerter
  • Publication number: 20060242475
    Abstract: An interleaver and scheme for interleaving in which highly correlated bits are maximally separated. The scheme involves interleaving a set of bits to be delivered to a modulation system that utilizes a quantity of N carrier frequencies. A first block of N consecutive bits is assigned to each of N bins, on a one-bit-per-one-bin basis. The aforementioned assignment proceeds in a particular sequence. A second block of N consecutive bits is assigned to each of the N bins, on a one-bit-per-one-bin basis. The second block is assigned in the same sequence the first block was assigned. The second block is consecutive to the first block.
    Type: Application
    Filed: March 30, 2005
    Publication date: October 26, 2006
    Inventors: Sumeet Sandhu, David Cheung
  • Publication number: 20060223460
    Abstract: A system, apparatus, method and article to manage diversity for a wireless multicarrier communication system are described. An apparatus may include a diversity agent to couple to a transmitter, the diversity agent to convert a determined number of input bits into symbols, interleave the symbols across multiple spatial streams, and map the symbols to tones for each spatial stream. Other embodiments are described and claimed.
    Type: Application
    Filed: March 30, 2005
    Publication date: October 5, 2006
    Inventors: Nageen Himayat, Sumeet Sandhu
  • Publication number: 20060156087
    Abstract: In a multicarrier transmitter that transmits two or more spatial data streams, a bit distributor assigns encoded bits to the spatial data streams based on bit-loading capabilities of the streams and in a manner to intermix the bits among the spatial streams.
    Type: Application
    Filed: January 12, 2005
    Publication date: July 13, 2006
    Inventors: Xintian Lin, Qinghua Li, Alexei Davydov, Alexander Maltsev, Sumeet Sandhu, Ada Shuk Yan Poon
  • Publication number: 20060114816
    Abstract: In a multiple-input multiple-output (MIMO) multicarrier communication system, a mobile station sends a quantized time-domain representation of the channel transfer function to a base station for use by the base station in generating beamforming coefficients for use in subsequent transmissions to the mobile station. In some embodiments, the quantized time-domain representation of the channel transfer function may be generated from selected most significant rays of an initial estimated sampled channel impulse response. Other embodiments may be described and claimed.
    Type: Application
    Filed: November 30, 2004
    Publication date: June 1, 2006
    Inventors: Alexander Maltsev, Andrey Pudeyev, Ali Sadri, Sumeet Sandhu, Sergey Tiraspolsky, Alexei Davydov
  • Publication number: 20060104377
    Abstract: A multicarrier transmitter performs bit-interleaving suitable for transmitting more than one spatial stream over a multicarrier communication channel. The multicarrier transmitter may include a bit-grouping shifter to shift QAM symbol-bit groupings of a spatial stream among subcarriers of the multicarrier communication signal, and a bit-position permuter to rotate bits among bit positions within subgroupings of the QAM symbol-bit groupings of the second spatial stream.
    Type: Application
    Filed: November 16, 2004
    Publication date: May 18, 2006
    Inventors: William Chimitt, Stanley Ling, Sumeet Sandhu