Patents by Inventor Dragan Samardzija

Dragan Samardzija 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: 10798748
    Abstract: The user equipment includes a processor configured to receive a broadcast message, the broadcast message including RACH parameters. The processor transmits a first message following receipt of the broadcast message. The processor receives a second message. The processor transmits a third message, the third message including power settings based on a successful transmission of the first message, and receives a fourth message, the fourth message including contention resolution information that adjusts the RACH parameters. The user equipment decodes RACH parameters and the contention information to obtain decoded RACH parameters, and adjusts an initial transmit power of the user equipment to be a first transmit power based on the decoded RACH parameters.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: October 6, 2020
    Assignee: Nokia of America Corporation
    Inventors: Marcos Tavares, Dirck Uptegrove, Dragan Samardzija
  • Publication number: 20200280503
    Abstract: The disclosure relates to a method comprising: using information associated with a first application in a first device, said first application being configured to communicate with a corresponding second application in a second device via a communication link, and information associated with said communication link to determine a modified output; and causing said modified output to be provided to said corresponding second application via said communication link.
    Type: Application
    Filed: September 26, 2017
    Publication date: September 3, 2020
    Inventors: Mikko Aleksi Uusitalo, Zexian Li, Dragan Samardzija, Harish Viswanathan
  • Patent number: 10530448
    Abstract: A switched-beam communication node (e.g., transmitter, receiver, or transceiver) has an antenna array, an (N×N) passive multibeamformer (e.g., Butler matrix (BM)), a phase network, a switch network, and a controller. The phase network has N phase shifters, one for each different beam port of the Butler matrix. The controller configures the node to support either (i) any one of N main beampatterns supported by the Butler matrix by controlling the switch network to select one of the phase shifters and its corresponding BM beam port or (ii) any one of up to at least (N?1) combined beampatterns by controlling the switch network to select two of the phase shifters and their two corresponding BM beam ports. Each combined beampattern is a combination of two phase-shifted main beampatterns. In some embodiments, the node can be configured to provide two concurrent beampatterns for transmit and/or receive operations, thereby supporting space-division multiple-access systems.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: January 7, 2020
    Assignee: Nokia Technologies Oy
    Inventors: Cuong Tran, Robert Fairfield, Ajit Reddy, Dragan Samardzija
  • Patent number: 10484210
    Abstract: An apparatus, such as a base station or a user equipment, includes a transceiver configured to receive a first signal that is a superposition of symbols transmitted concurrently by users in shared resources of an air interface. The apparatus also includes a processor configured to iteratively cancel, for the users, interference produced by the symbols transmitted by other users on the basis of log likelihood ratios (LLRs) that represent likelihoods that previous estimates of the symbols transmitted by the other users are correct. The processor is also configured to iteratively decode the symbols transmitted by the users after canceling the interference produced by the symbols transmitted by the other users.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: November 19, 2019
    Assignees: Alcatel Lucent, Nokia of America Corporation
    Inventors: Marcos Tavares, Dale Douglas Harman, Milan Zivkovic, Juergen Otterbach, Dragan Samardzija
  • Publication number: 20190174553
    Abstract: The user equipment includes a processor configured to receive a broadcast message, the broadcast message including RACH parameters. The processor transmits a first message following receipt of the broadcast message. The processor receives a second message. The processor transmits a third message, the third message including power settings based on a successful transmission of the first message, and receives a fourth message, the fourth message including contention resolution information that adjusts the RACH parameters. The user equipment decodes RACH parameters and the contention information to obtain decoded RACH parameters, and adjusts an initial transmit power of the user equipment to be a first transmit power based on the decoded RACH parameters.
    Type: Application
    Filed: June 5, 2017
    Publication date: June 6, 2019
    Applicant: Alcetel-Lucent USA Inc.
    Inventors: Marcos TAVARES, Dirck UPTEGROVE, Dragan SAMARDZIJA
  • Patent number: 10122435
    Abstract: In one example embodiment, a method includes obtaining a duration of a first network element scanning period of a first network element for a plurality of first beacons, the plurality of first beacons associated with the different direct energy beams, scanning for the plurality of first beacons over a second network element scanning period of a second network element, the second network element scanning period including a number of first network element scanning periods, the first network element scanning period being part of the number of the first network element scanning periods, receiving at least one of the plurality of first beacons during the number of the first network element scanning periods, determining a preferred first beacon based on the received at least one of the plurality of first beacons and transmitting an indication of the preferred first beacon to a base station.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: November 6, 2018
    Assignee: NOKIA OF AMERICA CORPORATION
    Inventors: Hubert R. McLellan, Dmitry Chizhik, Dragan Samardzija
  • Publication number: 20180287828
    Abstract: An apparatus, such as a base station or a user equipment, includes a transceiver configured to receive a first signal that is a superposition of symbols transmitted concurrently by users in shared resources of an air interface. The apparatus also includes a processor configured to iteratively cancel, for the users, interference produced by the symbols transmitted by other users on the basis of log likelihood ratios (LLRs) that represent likelihoods that previous estimates of the symbols transmitted by the other users are correct. The processor is also configured to iteratively decode the symbols transmitted by the users after canceling the interference produced by the symbols transmitted by the other users.
    Type: Application
    Filed: March 29, 2017
    Publication date: October 4, 2018
    Inventors: Marcos Tavares, Dale Douglas Harman, Milan Zivkovic, Juergen Otterbach, Dragan Samardzija
  • Publication number: 20180288179
    Abstract: An Internet-of-Things (IOT) proxy includes storage hardware configured to store first and second state information. The first state information defines first contexts for flows associated with a plurality of IoT devices. The plurality of electronic devices have established a corresponding plurality of first sessions that are terminated by the IoT proxy. The second state information defines second contexts for the flows associated with the plurality of IoT devices. The second state information is associated with a second session that has been established between the proxy and a server or an other electronic device. The IoT proxy also includes computing hardware configured to modify headers of packets associated with the IoT devices based on at least one of the first state information or the second state information. In some cases, the IoT proxy is implemented as a virtual network slice in a network function virtualization (NFV) architecture.
    Type: Application
    Filed: April 3, 2017
    Publication date: October 4, 2018
    Inventors: Randeep S. BHATIA, Bhawna GUPTA, Tirunell V. LAKSHMAN, Shreyasee MUKHERJEE, Dragan SAMARDZIJA
  • Patent number: 10034286
    Abstract: In one example embodiment, a method includes transmitting a plurality of first beacons over a first scanning period, the plurality of first beacons associated with different direct energy beams, the transmitting including, transmitting the plurality of first beacons over sub-periods of the first scanning period, respectively; obtaining an indication of a preferred first beacon, the preferred beacon being received by a network element during the transmitting of the plurality of beacons over the first scanning period; and communicating with the element during a scheduled portion of a first data communication period using the beam associated with the preferred first beacon, a length of the first scanning period and a length of the first data communication period forming a length of a time transmission interval.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: July 24, 2018
    Assignee: Alcatel-Lucent USA Inc.
    Inventors: Hubert R. McLellan, Dmitry Chizhik, Dragan Samardzija
  • Publication number: 20180077702
    Abstract: In one example embodiment, a method includes transmitting a plurality of first beacons over a first scanning period, the plurality of first beacons associated with different direct energy beams, the transmitting including, transmitting the plurality of first beacons over sub-periods of the first scanning period, respectively; obtaining an indication of a preferred first beacon, the preferred beacon being received by a network element during the transmitting of the plurality of beacons over the first scanning period; and communicating with the element during a scheduled portion of a first data communication period using the beam associated with the preferred first beacon, a length of the first scanning period and a length of the first data communication period forming a length of a time transmission interval.
    Type: Application
    Filed: September 9, 2016
    Publication date: March 15, 2018
    Inventors: Hubert R. MCLELLAN, Dmitry CHIZHIK, Dragan SAMARDZIJA
  • Publication number: 20180076874
    Abstract: In one example embodiment, a method includes obtaining a duration of a first network element scanning period of a first network element for a plurality of first beacons, the plurality of first beacons associated with the different direct energy beams, scanning for the plurality of first beacons over a second network element scanning period of a second network element, the second network element scanning period including a number of first network element scanning periods, the first network element scanning period being part of the number of the first network element scanning periods, receiving at least one of the plurality of first beacons during the number of the first network element scanning periods, determining a preferred first beacon based on the received at least one of the plurality of first beacons and transmitting an indication of the preferred first beacon to a base station.
    Type: Application
    Filed: September 9, 2016
    Publication date: March 15, 2018
    Inventors: Hubert R. MCLELLAN, Dmitry CHIZHIK, Dragan SAMARDZIJA
  • Patent number: 9913295
    Abstract: Detecting physical random access channel (RACH) preambles is accomplished by computing a correlation power profile based on received RACH preambles, where the correlation power profile values may be sorted. A weight factor is computed for each of the correlation power profile values based on a normalized RACH detection threshold. Outlier peaks of the correlation power profile values are selected based on the weight factor. The outlier peaks to the first set of RACH signatures are mapped in order to identify a user equipment (UE) that is associated with one of the received RACH preambles. Network traffic is then controlled for network communications associated with the identified UE.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: March 6, 2018
    Assignee: Alcatel-Lucent USA Inc.
    Inventors: Marcos Tavares, Dirck Uptegrove, Dragan Samardzija
  • Publication number: 20170374683
    Abstract: Detecting physical random access channel (RACH) preambles is accomplished by computing a correlation power profile based on received RACH preambles, where the correlation power profile values may be sorted. A weight factor is computed for each of the correlation power profile values based on a normalized RACH detection threshold. Outlier peaks of the correlation power profile values are selected based on the weight factor. The outlier peaks to the first set of RACH signatures are mapped in order to identify a user equipment (UE) that is associated with one of the received RACH preambles. Network traffic is then controlled for network communications associated with the identified UE.
    Type: Application
    Filed: June 24, 2016
    Publication date: December 28, 2017
    Inventors: Marcos TAVARES, Dirck UPTEGROVE, Dragan SAMARDZIJA
  • Patent number: 9565633
    Abstract: A capability for opportunistic forwarding of information using a wireless terminal is presented. An energy limited node includes a wake-up circuit configured to detect a wake-up signal from a wireless terminal where the wake-up signal includes a modulated waveform signal, and a communication module configured to switch, based on a control signal generated by the wake-up circuit, from a sleep mode in which the communication module is not operable to communicate with the wireless terminal to an active mode in which the communication module is operable to communicate with the wireless terminal.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: February 7, 2017
    Assignees: Alcatel Lucent, Alcatel-Lucent USA Inc.
    Inventors: Dragan Samardzija, Howard Huang, Vijay Venkateswaran, Chih-Kuang Lin, Irwin Kennedy, Richard Abbot
  • Patent number: 9553709
    Abstract: A method and an apparatus is provided for conducting wireless data communications using whitespace and non-whitespace channels. A short-range base station with an interface for whitespace channels and another interface for non-whitespace channels communicates with user equipment outfitted with equivalent interfaces. The short-range base station has a preference for using the interface for the whitespace channels, where the whitespace channels are whitespace spectrum bands that are available during periods when a primary user is not actively utilizing the whitespace. A spectrum server analyzes spectrum occupancy database information and whitespace spectrum sensing measurements to determine lists of available whitespace spectrum bands for use by the short-range base station.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: January 24, 2017
    Assignee: Alcatel Lucent
    Inventors: Milind M. Buddhikot, Sayandeep Sen, Dragan Samardzija, Tan Zhang, Susan Walker
  • Patent number: 9445411
    Abstract: An access point to transmit a first message that instructs stations (STAs) to bypass uplink transmissions for a first time interval indicated in the first message. The access point is to transmit one or more first messages at a transmission power sufficient for a first portion of the STAs to decode the one or more first messages and insufficient for a second portion of the STAs to decode the one or more first messages. The transmission power can be determined based on minimum transmit powers associated with the STAs. Subsequent second time intervals can be determined based on uplink transmissions received from the STAs during the first time interval.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: September 13, 2016
    Assignee: Alcatel Lucent
    Inventors: Jonathan Ling, Dragan Samardzija
  • Patent number: 9389301
    Abstract: Various embodiments provide a method and apparatus for determining tag location by using one or more estimated channel responses (CR) that characterize the wireless channel between the tag and one or more respective anchors. In particular, a tracking server in communication with the anchor(s) determines the tag's location based on a comparison of the estimated CR(s) with a set of stored CRs associated with the anchor(s).
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: July 12, 2016
    Assignee: Alcatel Lucent
    Inventors: Howard Huang, Dragan Samardzija, Irwin Kennedy, Stefan Valentin, Dmitry Chizhik, Gregory Wright, Sarabjot Singh
  • Publication number: 20160007288
    Abstract: A capability for opportunistic forwarding of information using a wireless terminal is presented. An energy limited node includes a wake-up circuit configured to detect a wake-up signal from a wireless terminal where the wake-up signal includes a modulated waveform signal, and a communication module configured to switch, based on a control signal generated by the wake-up circuit, from a sleep mode in which the communication module is not operable to communicate with the wireless terminal to an active mode in which the communication module is operable to communicate with the wireless terminal.
    Type: Application
    Filed: July 3, 2014
    Publication date: January 7, 2016
    Applicants: ALCATEL LUCENT, ALCATEL-LUCENT USA INC.
    Inventors: DRAGAN SAMARDZIJA, HOWARD HUANG, VIJAY VENKATESWARAN, CHIH-KUANG LIN, IRWIN KENNEDY, RICHARD ABBOT
  • Patent number: 9232487
    Abstract: An access point generates a data packet such that the data packet has a same packet length as a data packet from at least one other access point. The access point reserves a channel for a time interval, and initiates transmission of the data packet over the channel at a same time as transmission of the data packet from the at least one other access point. As a result, the access point synchronizes its transmission interval with a transmission interval of the at least one other access point which reduces inter-access point interference.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: January 5, 2016
    Assignee: Alcatel Lucent
    Inventors: Jonathan Ling, Dragan Samardzija
  • Publication number: 20150247915
    Abstract: Various embodiments provide a method and apparatus for determining tag location by using one or more estimated channel responses (CR) that characterize the wireless channel between the tag and one or more respective anchors. In particular, a tracking server in communication with the anchor(s) determines the tag's location based on a comparison of the estimated CR(s) with a set of stored CRs associated with the anchor(s).
    Type: Application
    Filed: February 28, 2014
    Publication date: September 3, 2015
    Applicants: Alcatel-Lucent USA Inc., Alcatel Lucent
    Inventors: Howard Huang, Dragan Samardzija, Irwin Kennedy, Stefan Valentin, Dmitry Chizhik, Gregory Wright, Sarabjot Singh