Patents by Inventor Neelesh B. Mehta

Neelesh B. Mehta 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: 9749716
    Abstract: Sensors within sensor node networks may communicate bio-event or other types of measurement results/decisions between each other using signal transmission variations. Each sensor node within a network and between networks may transmit and receive signals. A sensor node may scale a signal transmission power in a manner that is proportional to a confidence level of a decision or measurement about an event being detected. Each sensor node will receive transmissions from neighboring nodes, and can refine an estimate about an occurrence of the event at its location based on received signal strengths, for example.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: August 29, 2017
    Assignee: INDIAN INSTITUTE OF SCIENCE (IISC)
    Inventor: Neelesh B. Mehta
  • Publication number: 20150341439
    Abstract: Sensors within sensor node networks may communicate bio-event or other types of measurement results/decisions between each other using signal transmission variations. Each sensor node within a network and between networks may transmit and receive signals. A sensor node may scale a signal transmission power in a manner that is proportional to a confidence level of a decision or measurement about an event being detected. Each sensor node will receive transmissions from neighboring nodes, and can refine an estimate about an occurrence of the event at its location based on received signal strengths, for example.
    Type: Application
    Filed: August 3, 2015
    Publication date: November 26, 2015
    Inventor: Neelesh B. Mehta
  • Patent number: 9118980
    Abstract: Sensors within sensor node networks may communicate bio-event or other types of measurement results/decisions between each other using signal transmission variations. Each sensor node within a network and between networks may transmit and receive signals. A sensor node may scale a signal transmission power in a manner that is proportional to a confidence level of a decision or measurement about an event being detected. Each sensor node will receive transmissions from neighboring nodes, and can refine an estimate about an occurrence of the event at its location based on received signal strengths, for example.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: August 25, 2015
    Assignee: INDIAN INSTITUTE OF SCIENCE (IISC)
    Inventor: Neelesh B. Mehta
  • Patent number: 9083420
    Abstract: A system using cooperative communication with rateless codes is presented that uses communication transmission aspects of cooperative communication with rateless codes over Rayleigh fading channels and queuing aspects for buffering messages at intermediate relays. The system transmits a subsequent message while a current message is en route to the destination by receiving and buffering the current message in queues at intermediate relays. A relay with a best instantaneous communication link to the source may receive a message first and forward the received message to the destination. Alternatively, if inter-relay communication links are strong, all relays may cooperate simultaneously.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: July 14, 2015
    Assignee: Indian Institute of Science
    Inventors: Neelesh B. Mehta, Vinod Sharma, Gaurav Bansal
  • Patent number: 9025471
    Abstract: The embodiments of the invention describe a method for antenna selection in a wireless communication network. The network includes a transceiver having a set of antennas. The transceiver is configured to transmit a frequency-hopped sounding reference signal (SRS) over a subband from a subset of antennas at a time. The transceiver transmits the frequency-hopped SRS from subsets of antennas in the set of antennas alternately. In response to the transmitting, the transceiver receives information indicative of an optimal subset of antennas and transmits data from the optimal subset of antennas.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: May 5, 2015
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Neelesh B. Mehta, Koon Hoo Teo, Jinyun Zhang
  • Publication number: 20150016489
    Abstract: The embodiments of the invention provide a method for selecting antennas for data transmission in a wireless communication network including user equipment (UE). The network is assigned a band of frequencies, wherein the band is partitioned into at least one set of subbands of the band according to a sounding reference signal (SRS) bandwidth configuration in a form of a code-tree having a plurality levels and each level is associated with a partition coefficient. The UE is configured to transmit frequency-hopped SRS on the set of subbands using subsets of the set of antennas. First, the method determines if a number of subbands in the set of the subbands is odd or even based on the SRS bandwidth configuration, and selects a particular subset of the antennas according to whether the number is odd or even. Then, the SRS is transmitted from the particular subset of the antennas.
    Type: Application
    Filed: September 30, 2014
    Publication date: January 15, 2015
    Inventors: Neelesh B Mehta, Koon Hoo Teo, Jinyun Zhang, Gennadiy Vinokur, Man-On Pun
  • Patent number: 8913551
    Abstract: The embodiments of the invention provide a method for selecting antennas for date transmission in a wireless communication network including user equipment (UE). The network is assigned a band of frequencies, wherein the band is partitioned into at least one set of subbands of the band according to a sounding reference signal (SRS) bandwidth configuration in a form of a codetree having a plurality levels and each level is associated with a partition coefficient. The UE is configured to transmit frequency-hopped SRS on the set of subbands using subsets of the set of antennas. First, the method determines if a number of subbands in the set of the subbands is odd or even based on the SRS bandwidth configuration, and selects a particular subset of the antennas according to whether the number is odd or even. Then, the SRS is transmitted from the particular subset of the antennas.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: December 16, 2014
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Neelesh B. Mehta, Koon Hoo Teo, Jinyun Zhang, Gennadiy V. Vinokur, Man-On Pun
  • Patent number: 8842554
    Abstract: The embodiments of the invention describe a method for antenna selection in a wireless communication network. The network includes a transceiver having a set of antennas. The transceiver is configured to transmit a frequency-hopped sounding reference signal (SRS) over a subband from a subset of antennas at a time. The transceiver transmits the frequency-hopped SRS from subsets of antennas in the set of antennas substantially alternately. In response to the transmitting, the transceiver receives information indicative of an optimal subset of antennas and transmits data from the optimal subset of antennas.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: September 23, 2014
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Neelesh B. Mehta, Koon Hoo Teo, Jinyun Zhang
  • Patent number: 8823544
    Abstract: Methods and systems for real-time monitoring of environments are disclosed. The methods include receiving a measurement by a sensor unit, and transmitting a signal to a monitoring station if the measurement is approximately between a lower and an upper threshold. Based on a number of signals received, the monitoring station will broadcast a signal indicating to stop transmission of measurements or to update the lower and the upper threshold and continue transmission of measurements. Transmission of measurements may occur during a given time slot.
    Type: Grant
    Filed: August 14, 2010
    Date of Patent: September 2, 2014
    Assignee: Indian Institute of Science
    Inventor: Neelesh B. Mehta
  • Patent number: 8824420
    Abstract: A method and system generating signal to select a subset of antennas from a set of antennas to transmit user data in a wireless communication system. User data are transmitted during a first transmission time intervals (TTI) using a first subset of antennas. Pilot tones are transmitted during a second TTI using a second subset of antennas. Corresponding channels are estimated for the first subset of antennas and the second subset of antennas from the user data and the pilot tones. Then, based on the estimating, an optimal subset of antenna is selected from the first subset of antennas and the second subset of antennas to transmit the user data during a sequent TTI, and in which the selecting is performed adaptively.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: September 2, 2014
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Neelesh B. Mehta, Erdem Bala, Jinyun Zhang
  • Patent number: 8483186
    Abstract: Embodiments of the invention describe a method for antenna selection (AS) in a wireless communication network, the network comprising user equipment (UE), configured to transmit a sounding reference signal (SRS) from a subset of antennas at a time without transmitting user data. The method transmits a first SRS from a first subset of antennas in a first subframe, wherein the first subframe does not include the user data, and transmits a second SRS from a second subset of antennas in a second subframe, wherein the second subframe does not include the user data. After receiving, in response to the transmitting the first SRS and the second SRS, information identifying an optimal subset of antennas from the first subset of antennas and the second subset of antennas, the method selects the optimal set of antennas such that the optimal subset of antennas is selected without transmitting the user data.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: July 9, 2013
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Koon Hoo Teo, Neelesh B. Mehta, Jinyun Zhang
  • Patent number: 8432848
    Abstract: A system using cooperative communication with rateless codes is presented that uses communication transmission aspects of cooperative communication with rateless codes over Rayleigh fading channels and queuing aspects for buffering messages at intermediate relays. The system transmits a subsequent message while a current message is en route to the destination by receiving and buffering the current message in queues at intermediate relays. A relay with a best instantaneous communication link to the source may receive a message first and forward the received message to the destination. Alternatively, if inter-relay communication links are strong, all relays may cooperate simultaneously.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: April 30, 2013
    Assignee: Indian Institute of Science (IISC)
    Inventors: Neelesh B. Mehta, Vinod Sharma, Gaurav Bansal
  • Publication number: 20120313791
    Abstract: Methods and systems for real-time monitoring of environments are disclosed. The methods include receiving a measurement by a sensor unit, and transmitting a signal to a monitoring station if the measurement is approximately between a lower and an upper threshold. Based on a number of signals received, the monitoring station will broadcast a signal indicating to stop transmission of measurements or to update the lower and the upper threshold and continue transmission of measurements. Transmission of measurements may occur during a given time slot.
    Type: Application
    Filed: August 14, 2010
    Publication date: December 13, 2012
    Applicant: INDIAN INSTITUTE OF SCIENCE
    Inventor: Neelesh B. Mehta
  • Patent number: 8331297
    Abstract: Embodiments of the invention describe a method for antenna selection (AS) in a wireless communication network, the network comprising user equipment (UE), wherein the UE comprises a plurality of subsets of antennas including a first subset of antennas and a second subset of antennas, and wherein the UE is configured to transmit a sounding reference signal (SRS) from a subset of antennas at a time. The method transmits a first SRS from the first subset of antennas, transmits a second SRS from the second subset of antennas, receives, in response to the transmitting the first SRS and the second SRS, information identifying an optimal subset of antennas from the first subset of antennas and the second subset of antennas, and transmits user data from the optimal subset of antennas.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: December 11, 2012
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Koon Hoo Teo, Neelesh B. Mehta, Jinyun Zhang
  • Patent number: 8238405
    Abstract: Embodiments of the invention describe a method for antenna selection (AS) in a wireless communication network. The network includes a base station and a transceiver, wherein the transceiver has a set of antennas, and wherein the transceiver is configured to transmit a frequency-hopped sounding reference signal (SRS) from a subset of antennas at a time. The base station determines a type of a training transmission based on a number of the subbands and a number of subsets in the set of antennas, and transmits an instruction including the type to the transceiver.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: August 7, 2012
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Neelesh B. Mehta, Koon Hoo Teo, Jinyun Zhang
  • Patent number: 8228858
    Abstract: Embodiments of the invention describe a method for antenna selection (AS) in a wireless communication network, the network comprising user equipment (UE), wherein the UE comprises a plurality of subsets of antennas including a selected subset of antennas and an unselected subset of antennas, wherein only the selected subset of antennas is used for transmitting user data, and wherein the UE is configured to transmit only from a subset of antennas at a time. The method transmits the user data from the selected subset of antennas within a set of subframes, and transmits a sounding reference signal (SRS) from the unselected subset of antennas within at least one subframe in the set of subframes to enable antenna selection for user data transmission.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: July 24, 2012
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Koon Hoo Teo, Neelesh B. Mehta, Jinyun Zhang
  • Patent number: 8223723
    Abstract: Embodiments of the invention describe a method for joint resource blocks assignment and antenna selection (AS) in a wireless communication network, the network comprising user equipment (UE), wherein the UE comprises a plurality of subsets of antennas, the UE is configured to transmit a sounding reference signal (SRS) from a subset of antennas at a time. The method transmits a first SRS from a first subset of antennas and a second SRS from a second subset of antennas. Upon receiving, in response to the transmitting of the first SRS and the second SRS, information related to an optimal subset of antennas, and information related to an optimal subset of resource blocks, the method transmits a data symbol from the optimal subset of antennas using the optimal resource block.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: July 17, 2012
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Koon Hoo Teo, Neelesh B. Mehta, Jinyun Zhang
  • Publication number: 20120178502
    Abstract: A method transmits data from a user equipment (UE) including a transceiver having a set of available antennas. The method selects a subset of antennas from the set of available antennas; and transmits the data by the transceiver using the subset of antennas. The selecting subset of antennas includes transmitting sounding reference signals (SRSs) according to specified times, frequencies, and antennas; and receiving, in response to the transmitting the SRSs, information indicative of a selection of the subset of antennas.
    Type: Application
    Filed: November 21, 2011
    Publication date: July 12, 2012
    Inventors: Koon Hoo Teo, Neelesh B. Mehta, Jia Tang, Noriyuki Fukui
  • Patent number: 8086272
    Abstract: A method and system selects antennas in a wireless network including a base station and user equipment (UE) transceivers. The base station specifies times and frequencies to transmit sounding reference signals (SRSs), and antennas to use to transmit the SRSs for the specified times and frequencies. The transceivers transmit the SRS according to the specified times, frequencies, and antennas. The base station selects subsets of the set of available sets of antennas, and indicates the selected subset of antennas to the transceiver.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: December 27, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Koon Hoo Teo, Neelesh B. Mehta, Jia Tang
  • Publication number: 20110310931
    Abstract: The embodiments of the invention provide a method for selecting antennas for date transmission in a wireless communication network including user equipment (UE). The network is assigned a band of frequencies, wherein the band is partitioned into at least one set of subbands of the band according to a sounding reference signal (SRS) band-width configuration in a form of a code-tree having a plurality levels and each level is associated with a partition coefficient. The UE is configured to transmit frequency-hopped SRS on the set of sub-bands using subsets of the set of antennas. First, the method determines if a number of subbands in the set of the sub-bands is odd or even based on the SRS bandwidth configuration, and selects a particular subset of the antennas according to whether the number is odd or even. Then, the SRS is transmitted from the particular subset of the antennas.
    Type: Application
    Filed: June 24, 2009
    Publication date: December 22, 2011
    Inventors: Neelesh B. Mehta, Koon Hoo Teo, Jinyun Zhang, Gennadiy V. Vinokur, Man-On Pun