Patents by Inventor Ather Gattami

Ather Gattami 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: 20190109743
    Abstract: The present disclosure pertains to a method for operating a transmitting node in a wireless communication network. The method comprises transmitting a signal based on Filter Bank Multi-Carrier, FBMC, filtering, wherein the signal comprises signal carrying pulses, g(t), the pulses having a sampling interval T, the pulses being transmitted with a separation interval of ?T, with 0<?<1. The disclosure also pertains to related methods and devices.
    Type: Application
    Filed: April 19, 2016
    Publication date: April 11, 2019
    Inventor: Ather GATTAMI
  • Patent number: 10256943
    Abstract: The present disclosure concerns radio communication. More particularly, the disclosure relates to encoding/decoding. A method is performed by a receiver (300) for decoding data from a message which is received from a transmitter (100). The receiver (300) is generally configured to use a decoding matrix in the decoding. Furthermore, the message is typically split into a pre-defined number of sub-messages. The receiver (300) receives data packets from the transmitter (100), wherein the received data packets are formed according to a certain structure. Furthermore, the receiver (300) decodes the received data packets as the data packets are received and the decoding is performed sequentially with the arrival (i.e. reception) of the data packets. Hereby it is made possible to reduce, and thus received improve, the latency.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: April 9, 2019
    Assignee: Telefonactiebolaget LM Ericsson (Publ)
    Inventor: Ather Gattami
  • Patent number: 10257004
    Abstract: A method of transmitting data over a wireless communications channel comprises transmitting a plurality of blocks (70), in which each block (70) comprises a plurality of symbols (71, 72, 73, 74, 75) representing the data. The symbols are transmitted using time packing, or Faster-than-Nyquist signalling, such that each symbol in a block overlaps in the time domain with at least one other symbol in the block. A null guard interval (77) is included in each block, having a length that means that inter-symbol interference is not a cause of inter-block interference.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: April 9, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Ather Gattami
  • Patent number: 10243632
    Abstract: The present disclosure generally relates to the field of Faster-Than-Nyquist Signaling More specifically, the present disclosure relates to a technique of supporting Faster-Than-Nyquist transmission of data in a Multiple Input Multiple Output environment. A method embodiment comprises: forming two or more spatial data streams from data to be transmitted in the MIMO environment; partitioning a frequency band available for transmission of the data in the MIMO environment over the two or more spatial data streams into two or more sub-bands; and processing each of the two or more spatial data streams using FTN sampling.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: March 26, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventor: Ather Gattami
  • Patent number: 10237880
    Abstract: Method and radio access point for handling a two-way communication between a first wireless device and a second wireless device which are both served by the radio access point. A set of candidate transmission modes are available for use in the two-way communication. The radio access point obtains a mode-specific quality metric related to a predicted Signal to Interference and Noise Ratio, SINR, for each one of the candidate transmission modes, and selects one of the candidate transmission modes based on the obtained mode-specific quality metrics. The radio access point is thus able to select the transmission mode that has the best mode-specific quality metric in the set. The selected transmission mode is then applied for the two-way communication. Thereby, the most favorable transmission mode may be selected and used to provide satisfactory or even optimal performance.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: March 19, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Aidilla Pradini, Ather Gattami, Gabor Fodor
  • Patent number: 10237096
    Abstract: There is provided mechanisms for processing a reception signal r. The method is performed by a receiver. The method comprises receiving a reception signal r representing a sequence of input symbols xn, the reception signal comprising a sequence of pulse forms gT selected from a set of pulse forms. The method comprises generating a set of decoded symbols Formula (I) from the reception symbols by subjecting a set of sampled symbols yn derived from the reception signal to a whitening filter defined by second coefficients K, and to an equalizer defmed by first coefficients R. The first coefficients R and the second coefficients K are selected from respective matrices of a Toeplitz decomposition of a Gram matrix G defmed by the inner product of all pulses in the set of pulse forms.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: March 19, 2019
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Emil Ringh, Ather Gattami
  • Patent number: 10165587
    Abstract: A method and base station (800) for supporting Device-to-Device, D2D, communication over a D2D radio link between a first wireless device (D1) and a second wireless device (D2). The base station (800) obtains a first path gain (G12) of the D2D radio link, a second path gain (G1) of a cellular radio link between the base station (800) and the first wireless device (D1), and a third path gain (G2) of a cellular radio link between the base station (800) and the second wireless device (D2). The base station (800) then applies a D2D communication mode with network coding for the D2D communication when the first, second and third path gains (G12,G1,G2) satisfy a threshold condition.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: December 25, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Ather Gattami, Gabor Fodor
  • Patent number: 10021548
    Abstract: Encoding and decoding schemes at an encoding device/transmitter and decoder device/receiver, respectively, for use in communicating the state of a system. In an example method carried out by an encoding device, state information x(k), which represents the current state of a monitored system, is measured. The encoding device calculates a state update parameter, based on: a message power constraint P; the covariance N of measurement noise associated with the channel over which encoded state information is to be transmitted; and the norm of the signal vector [s(k), x(k)], where s(k) is a stored state information parameter. The encoding device then calculates a message signal z(k)=G(k)*(x(k)?s(k)), which may then be transmitted to a remote decoder device, and calculates an updated version of the stored information s(k+1)=A*(s(k)+F(k)*z(k)). The encoding device replaces the stored state information s(k) with s(k+1).
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: July 10, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Ather Gattami
  • Patent number: 9960934
    Abstract: Channel estimation with reduced overhead in a filter bank multi-carrier (FBMC) system is enabled by use of frequency-time blocks each comprising a pilot field with two pilot symbols and data symbols outside the pilot field. In embodiments, nearest neighbors of the pilot field are populated with data symbols which fulfill one or more symmetry relations enabling approximate interference cancellation. In a first embodiment, the pilot field consists of two frequency-consecutive and time-coinciding positions; the pilot field may be time-initial in a transmission or may be located in the interior of the transmission. In a second embodiment, a block comprises two frequency-coinciding and time-consecutive pilot symbols; the pilot field may be frequency-initial in a transmission or may be located in the interior of the transmission.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: May 1, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Ning He, Robert Baldemair, Ather Gattami, Anders Hansson
  • Publication number: 20180076861
    Abstract: The present disclosure generally relates to the field of Faster-Than-Nyquist Signaling More specifically, the present disclosure relates to a technique of supporting Faster-Than-Nyquist transmission of data in a Multiple Input Multiple Output environment. A method embodiment comprises: forming two or more spatial data streams from data to be transmitted in the MIMO environment; partitioning a frequency band available for transmission of the data in the MIMO environment over the two or more spatial data streams into two or more sub-bands; and processing each of the two or more spatial data streams using FTN sampling.
    Type: Application
    Filed: April 15, 2015
    Publication date: March 15, 2018
    Inventor: Ather Gattami
  • Publication number: 20180048496
    Abstract: There is provided mechanisms for processing a reception signal r. The method is performed by a receiver. The method comprises receiving a reception signal r representing a sequence of input symbols xn, the reception signal comprising a sequence of pulse forms gT selected from a set of pulse forms. The method comprises generating a set of decoded symbols Formula (I) from the reception symbols by subjecting a set of sampled symbols yn derived from the reception signal to a whitening filter defined by second coefficients K, and to an equalizer defmed by first coefficients R. The first coefficients R and the second coefficients K are selected from respective matrices of a Toeplitz decomposition of a Gram matrix G defmed by the inner product of all pulses in the set of pulse forms.
    Type: Application
    Filed: April 2, 2015
    Publication date: February 15, 2018
    Inventors: Emil Ringh, Ather Gattami
  • Publication number: 20170359207
    Abstract: A method of transmitting data over a wireless communications channel comprises transmitting a plurality of blocks (70), in which each block (70) comprises a plurality of symbols (71, 72, 73, 74, 75) representing the data. The symbols are transmitted using time packing, or Faster-than-Nyquist signalling, such that each symbol in a block overlaps in the time domain with at least one other symbol in the block. A null guard interval (77) is included in each block, having a length that means that inter-symbol interference is not a cause of inter-block interference.
    Type: Application
    Filed: December 23, 2014
    Publication date: December 14, 2017
    Inventor: Ather Gattami
  • Patent number: 9838230
    Abstract: The invention refers to faster than Nyquist communication system wherein a set of symbols is conveyed from a transmitter (21) to a receiver (23), wherein the transmitter (21) and the receiver (23) are coupled by means of a transmission channel (22), comprising a precoder (210) adapted for generating a set of precoded symbols from a set of input symbols by performing a matrix operation with a precoding matrix, a pulse filter (212) adapted for generating a transmission signal to be transmitted over the transmission channel (22) as a function of the precoded symbols, a receiving filter (230) adapted for generating a set of sampled symbols as a function of the transmission signal and noise added by the transmission channel, and a decoder (232) adapted for generating a set of decoded symbols as a function of the set of sampled symbols, wherein the elements of the precoding matrix are dependent on a property of the pulse filter (212), The invention further refers to a transmitter, a receiver and corresponding metho
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: December 5, 2017
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Ather Gattami, Emil Ringh
  • Publication number: 20170331577
    Abstract: Methods and apparatus in a fifth-generation wireless communications, including an example method, in a wireless device, that includes receiving a downlink signal comprising an uplink access configuration index, using the uplink access configuration index to identify an uplink access configuration from among a predetermined plurality of uplink access configurations, and transmitting to the wireless communications network according to the identified uplink access configuration. The example method further includes, in the same wireless device, receiving, in a first subframe, a first Orthogonal Frequency-Division Multiplexing (OFDM) transmission formatted according to a first numerology and receiving, in a second subframe, a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology. Variants of this method, corresponding apparatuses, and corresponding network-side methods and apparatuses are also disclosed.
    Type: Application
    Filed: May 13, 2016
    Publication date: November 16, 2017
    Inventors: Stefan Parkvall, Janne Peisa, Gunnar Mildh, Robert Baldemair, Stefan Wager, Jonas Kronander, Karl Werner, Richard Abrahamsson, Ismet Aktas, Peter Alriksson, Junaid Ansari, Shehzad Ali Ashraf, Henrik Asplund, Fredrik Athley, Håkan Axelsson, Joakim Axmon, Johan Axnäs, Kumar Balachandran, Gunnar Bark, Jan-Erik Berg, Andreas Bergström, Håkan Björkegren, Nadia Brahmi, Cagatay Capar, Anders Carlsson, Andreas Cedergren, Mikael Coldrey, Icaro L. J. da Silva, Erik Dahlman, Ali El Essaili, Ulrika Engström, Mårten Ericson, Erik Eriksson, Mikael Fallgren, Rui Fan, Gabor Fodor, Pål Frenger, Jonas Fridén, Jonas Fröberg Olsson, Anders Furuskär, Johan Furuskog, Virgile Garcia, Ather Gattami, Fredrik Gunnarsson, Ulf Gustavsson, Bo Hagerman, Fredrik Harrysson, Ning He, Martin Hessler, Kimmo Hiltunen, Songnam Hong, Dennis Hui, Jörg Huschke, Tim Irnich, Sven Jacobsson, Niklas Jaldén, Simon Järmyr, Zhiyuan Jiang, Martin Johansson, Niklas Johansson, Du Ho Kang, Eleftherios Karipidis, Patrik Karlsson, Ali S. Khayrallah, Caner Kilinc, Göran N. Klang, Sara Landström, Christina Larsson, Gen Li, Lars Lindbom, Robert Lindgren, Bengt Lindoff, Fredrik Lindqvist, Jinhua Liu, Thorsten Lohmar, Qianxi Lu, Lars Manholm, Ivana Maric, Jonas Medbo, Qingyu Miao, Reza Moosavi, Walter Müller, Elena Myhre, Karl Norrman, Bengt-Erik Olsson, Torgny Palenius, Sven Petersson, Jose Luis Pradas, Mikael Prytz, Olav Queseth, Pradeepa Ramachandra, Edgar Ramos, Andres Reial, Thomas Rimhagen, Emil Ringh, Patrik Rugeland, Johan Rune, Joachim Sachs, Henrik Sahlin, Vidit Saxena, Nima Seifi, Yngve Selén, Eliane Semaan, Sachin Sharma, Cong Shi, Johan Sköld, Magnus Stattin, Anders Stjernman, Dennis Sundman, Lars Sundström, Miurel Isabel Tercero Vargas, Claes Tidestav, Sibel Tombaz, Johan Torsner, Hugo Tullberg, Jari Vikberg, Peter Von Wrycza, Thomas Walldeen, Pontus Wallentin, Hai Wang, Ke Wang Helmersson, Jianfeng Wang, Yi-Pin Eric Wang, Niclas Wiberg, Emma Wittenmark, Osman Nuri Can Yilmaz, Ali Zaidi, Zhan Zhang, Zhang Zhang, Yanli Zheng
  • Publication number: 20170331670
    Abstract: Methods and apparatus in a fifth-generation wireless communications network, including an example method, in a wireless device, that includes determining a reporting quality threshold for a parameter related to channel state information (CSI); performing a measurement for each of a plurality of beams from a first predetermined set of beams for evaluation; evaluating the measurement for each of the plurality of beams against the reporting quality threshold; discontinuing the performing and evaluating of measurements in response to determining that the reporting quality threshold is met for one of the beams, such that one or more beams in the first predetermined set of beams are not measured and evaluated; and reporting, to the wireless communications network, CSI for the one of the beams.
    Type: Application
    Filed: May 13, 2016
    Publication date: November 16, 2017
    Inventors: Stefan Parkvall, Janne Peisa, Gunnar Mildh, Robert Baldemair, Stefan Wager, Jonas Kronander, Karl Werner, Richard Abrahamsson, Ismet Aktas, Peter Alriksson, Junaid Ansari, Shehzad Ali Ashraf, Henrik Asplund, Fredrik Athley, Håkan Axelsson, Joakim Axmon, Johan Axnäs, Kumar Balachandran, Gunnar Bark, Jan-Erik Berg, Andreas Bergström, Håkan Björkegren, Nadia Brahmi, Cagatay Capar, Anders Carlsson, Andreas Cedergren, Mikael Coldrey, Icaro L. J. da Silva, Erik Dahlman, Ali El Essaili, Ulrika Engström, Mårten Ericson, Erik Eriksson, Mikael Fallgren, Rui Fan, Gabor Fodor, Pål Frenger, Jonas Fridén, Jonas Fröberg Olsson, Anders Furuskär, Johan Furuskog, Virgile Garcia, Ather Gattami, Fredrik Gunnarsson, Ulf Gustavsson, Bo Hagerman, Fredrik Harrysson, Ning He, Martin Hessler, Kimmo Hiltunen, Songnam Hong, Dennis Hui, Jörg Huschke, Tim Irnich, Sven Jacobsson, Niklas Jaldén, Simon Järmyr, Zhiyuan Jiang, Martin Johansson, Niklas Johansson, Du Ho Kang, Eleftherios Karipidis, Patrik Karlsson, Ali S. Khayrallah, Caner Kilinc, Göran N. Klang, Sara Landström, Christina Larsson, Gen Li, Bo Lincoln, Lars Lindbom, Robert Lindgren, Bengt Lindoff, Fredrik Lindqvist, Jinhua Liu, Thorsten Lohmar, Qianxi Lu, Lars Manholm, Ivana Maric, Jonas Medbo, Qingyu Miao, Reza Moosavi, Walter Müller, Elena Myhre, Johan Nilsson, Karl Norrman, Bengt-Erik Olsson, Torgny Palenius, Sven Petersson, Jose Luis Pradas, Mikael Prytz, Olav Queseth, Pradeepa Ramachandra, Edgar Ramos, Andres Reial, Thomas Rimhagen, Emil Ringh, Patrik Rugeland, Johan Rune, Joachim Sachs, Henrik Sahlin, Vidit Saxena, Nima Seifi, Yngve Selén, Eliane Semaan, Sachin Sharma, Cong Shi, Johan Sköld, Magnus Stattin, Anders Stjernman, Dennis Sundman, Lars Sundström, Miurel Isabel Tercero Vargas, Claes Tidestav, Sibel Tombaz, Johan Torsner, Hugo Tullberg, Jari Vikberg, Peter Von Wrycza, Thomas Walldeen, Anders Wallén, Pontus Wallentin, Hai Wang, Ke Wang Helmersson, Jianfeng Wang, Yi-Pin Eric Wang, Niclas Wiberg, Emma Wittenmark, Osman Nuri Can Yilmaz, Ali Zaidi, Zhan Zhang, Zhang Zhang, Yanli Zheng
  • Publication number: 20170230202
    Abstract: Channel estimation with reduced overhead in a filter bank multi-carrier (FBMC) system is enabled by use of frequency-time blocks each comprising a pilot field with two pilot symbols and data symbols outside the pilot field. In embodiments, nearest neighbors of the pilot field are populated with data symbols which fulfill one or more symmetry relations enabling approximate interference cancellation. In a first embodiment, the pilot field consists of two frequency-consecutive and time-coinciding positions; the pilot field may be time-initial in a transmission or may be located in the interior of the transmission. In a second embodiment, a block comprises two frequency-coinciding and time-consecutive pilot symbols; the pilot field may be frequency-initial in a transmission or may be located in the interior of the transmission.
    Type: Application
    Filed: November 5, 2015
    Publication date: August 10, 2017
    Inventors: Ning HE, Robert BALDEMAIR, Ather GATTAMI, Anders HANSSON
  • Patent number: 9723643
    Abstract: A Device-to-Device (D2D) communication between a first wireless device served by a first base station and a second wireless device served by a second base station is supported by employing an assisting node that cooperates with the first base station by creating a network code form (f(x1,x2)) of first data (x1) transmitted by the first wireless device and second data (x2) transmitted by the second wireless device. The assisting node transmits the network coded form of the first and second data to the first base station, such that the first base station is able to determine the second data (x2) based on the received first data (x1) and the network coded form (f(x1,x2)), and to transmit the second data to the first wireless device, for combining with data received by the second wireless device in the D2D communication.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: August 1, 2017
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ather Gattami, Gabor Fodor, Göran N. Klang
  • Publication number: 20170027010
    Abstract: A method and a base station are provided. The base station obtains a first path gain of a cellular radio link to a first wireless device, a second path gain of a cellular radio link to a second wireless device and a third path gain of a Device-to-Device radio link between the first wireless device and the second wireless device. When the first, second and third path gains satisfy a threshold condition, the base station instructs the second wireless device to apply network coding on first data transmitted from the first wireless device and to transmit a network coded form of the first data. The base station receives a radio signal with the first data transmitted from the first wireless device and uses the network coded form of the first data transmitted by the second wireless device for decoding the first data.
    Type: Application
    Filed: December 30, 2013
    Publication date: January 26, 2017
    Inventors: Ather GATTAMI, Gabor FODOR, Aidilla PRADINI
  • Publication number: 20170019209
    Abstract: The present disclosure concerns radio communication. More particularly, the disclosure relates to encoding/decoding. A method is performed by a receiver (300) for decoding data from a message which is received from a transmitter (100). The receiver (300) is generally configured to use a decoding matrix in the decoding. Furthermore, the message is typically split into a pre-defined number of sub-messages. The receiver (300) receives data packets from the transmitter (100), wherein the received data packets are formed according to a certain structure. Furthermore, the receiver (300) decodes the received data packets as the data packets are received and the decoding is performed sequentially with the arrival (i.e. reception) of the data packets. Hereby it is made possible to reduce, and thus received improve, the latency.
    Type: Application
    Filed: December 17, 2013
    Publication date: January 19, 2017
    Inventor: Ather Gattami
  • Publication number: 20170005758
    Abstract: Transmitting node and receiving node and methods therein for a high-reliability transmission scheme with low resource utilization. The transmission scheme comprises two modes, where a first mode comprises regular acknowledged retransmission, and a second mode comprises accelerated, or otherwise ramped-up retransmission, thus improving the probability of conveying a message successfully within an allowed delay budget.
    Type: Application
    Filed: December 20, 2013
    Publication date: January 5, 2017
    Inventors: Robert BALDEMAIR, Gabor FODOR, Ather GATTAMI, Stefan PARKVALL