Patents by Inventor Alexander Tyrrell

Alexander Tyrrell 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: 10567264
    Abstract: A protocol test device for testing protocol compliance of a wireless device under test comprises a wireless interface for transmitting an outgoing RF signal to the wireless device under test and/or for receiving an incoming RF signal from the wireless device under test, a processing unit for generating messages for the outgoing RF signal based on a predefined protocol and for processing messages in the incoming RF signal based on the predefined protocol, a message log memory for storing the generated messages and the received messages, and a summary message generation unit that generates a summary log message and stores the summary log message in the message log memory, wherein the summary log message comprises information about at least one of the generated messages and/or the received messages and repetitions of the respective generated message and/or the respective received message.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: February 18, 2020
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventors: Alexander Tyrrell, Francesco Rossetto, William Powell
  • Patent number: 10536364
    Abstract: A protocol test device for testing protocol compliance of a wireless device under test comprises a wireless interface for transmitting an outgoing RF signal to the wireless device under test and/or for receiving an incoming RF signal from the wireless device under test, a processing unit for generating messages for the outgoing RF signal based on a predefined protocol and for processing messages in the incoming RF signal based on the predefined protocol, a message log memory for storing the generated messages and the received messages, and a summary message generation unit that generates a summary log message and stores the summary log message in the message log memory, wherein the summary log message comprises information about at least one of the generated messages and/or the received messages and repetitions of the respective generated message and/or the respective received message.
    Type: Grant
    Filed: May 13, 2017
    Date of Patent: January 14, 2020
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventors: Alexander Tyrrell, Francesco Rossetto, William Powell
  • Patent number: 10375589
    Abstract: A mobile communication test device for testing a mobile user equipment comprises a number of transmit-receive units with a signal generator, wherein the signal generator of at least one transmit-receive unit generates test signals, which rep-resent at least two different communication partners of the mobile user equipment, a number of test interfaces, which connect the transmit-receive units with the mobile user equipment and transmit the test signals to the mobile user equipment, and a test processor, which analyzes the reaction of the mobile user equipment to the transmitted test signals based on a predefined test specification.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: August 6, 2019
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventors: Alexander Tyrrell, Thiago Moraes, William Powell
  • Publication number: 20180295046
    Abstract: A protocol test device for testing protocol compliance of a wireless device under test comprises a wireless interface for transmitting an outgoing RF signal to the wireless device under test and/or for receiving an incoming RF signal from the wireless device under test, a processing unit for generating messages for the outgoing RF signal based on a predefined protocol and for processing messages in the incoming RF signal based on the predefined protocol, a message log memory for storing the generated messages and the received messages, and a summary message generation unit that generates a summary log message and stores the summary log message in the message log memory, wherein the summary log message comprises information about at least one of the generated messages and/or the received messages and repetitions of the respective generated message and/or the respective received message.
    Type: Application
    Filed: April 6, 2017
    Publication date: October 11, 2018
    Inventors: Alexander Tyrrell, Francesco Rossetto, William Powell
  • Publication number: 20180295047
    Abstract: A protocol test device for testing protocol compliance of a wireless device under test comprises a wireless interface for transmitting an outgoing RF signal to the wireless device under test and/or for receiving an incoming RF signal from the wireless device under test, a processing unit for generating messages for the outgoing RF signal based on a predefined protocol and for processing messages in the incoming RF signal based on the predefined protocol, a message log memory for storing the generated messages and the received messages, and a summary message generation unit that generates a summary log message and stores the summary log message in the message log memory, wherein the summary log message comprises information about at least one of the generated messages and/or the received messages and repetitions of the respective generated message and/or the respective received message.
    Type: Application
    Filed: May 13, 2017
    Publication date: October 11, 2018
    Inventors: Alexander Tyrrell, Francesco Rossetto, William Powell
  • Patent number: 9853780
    Abstract: The method is used for detection and/or removal of errors in transmission systems which comprise a transmitter unit and at least one receiver unit. The transmitter unit transmits to the receiver unit on a semi-persistent transmission resource which provides an adjustable frequency range and an adjustable time period. Furthermore, the self-repeating, semi-persistent transmission resource repeating with the period TSPS is rigidly assigned to the receiver unit. Following this, at least one but not all of the HARQ process numbers available for the self-repeating, semi-persistent transmission resource are reserved for the latter.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: December 26, 2017
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventors: Alexander Tyrrell, William Powell
  • Publication number: 20170295507
    Abstract: A mobile communication test device for testing a mobile user equipment comprises a number of transmit-receive units with a signal generator, wherein the signal generator of at least one transmit-receive unit generates test signals, which rep-resent at least two different communication partners of the mobile user equipment, a number of test interfaces, which connect the transmit-receive units with the mobile user equipment and transmit the test signals to the mobile user equipment, and a test processor, which analyses the reaction of the mobile user equipment to the transmitted test signals based on a predefined test specification.
    Type: Application
    Filed: April 8, 2016
    Publication date: October 12, 2017
    Inventors: Alexander Tyrrell, Thiago Moraes, William Powell
  • Patent number: 9037171
    Abstract: To cancel interference from the other cells and improve throughput characteristics without needing complicated processing, provided are a reception section that receives a reception signal including signal components from a plurality of base station apparatuses (BSs), and a signal detection and channel estimation section (61) that performs signal detection and channel estimation processing based on a factor graph on the reception signal, where the signal detection and channel estimation section (61) estimates interfering components from base station apparatuses of the other cells except a desired base station apparatus included in the reception signal at a symbol level, and reuses the interfering components in the signal detection and channel estimation processing based on the factor graph.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: May 19, 2015
    Assignee: NTT DOCOMO, INC.
    Inventors: Tetsushi Abe, Alexander Tyrrell, Auer Gunther
  • Publication number: 20140281782
    Abstract: The method is used for detection and/or removal of errors in transmission systems which comprise a transmitter unit and at least one receiver unit. The transmitter unit transmits to the receiver unit on a semi-persistent transmission resource which provides an adjustable frequency range and an adjustable time period. Furthermore, the self-repeating, semi-persistent transmission resource repeating with the period TSPS is rigidly assigned to the receiver unit. Following this, at least one but not all of the HARQ process numbers available for the self-repeating, semi-persistent transmission resource are reserved for the latter.
    Type: Application
    Filed: October 24, 2012
    Publication date: September 18, 2014
    Inventors: Alexander Tyrrell, William Powell
  • Patent number: 8675636
    Abstract: A node in a wireless system using transmit/receive slots for a communication among the nodes in the wireless system comprises a reception block configured to receive from a transmitting node in the wireless system a synchronization signal, and to derive from the synchronization signal a time offset and a frequency offset between the clock generators in the node and in the transmitting node. Further, a slot synchronization block is provided including the clock generator which is updated based on the derived time offset and the derived frequency offset. Further, a transmission block is provided for transmitting data. The slot synchronization block sets a slot start of a slot based on the derived time offset and sets a slot of a subsequent slot based on the derived frequency offset.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: March 18, 2014
    Assignee: NTT DoCoMo, Inc.
    Inventors: Alexander Tyrrell, Gunther Auer
  • Publication number: 20130157704
    Abstract: To cancel interference from the other cells and improve throughput characteristics without needing complicated processing, provided are a reception section that receives a reception signal including signal components from a plurality of base station apparatuses (BSs), and a signal detection and channel estimation section (61) that performs signal detection and channel estimation processing based on a factor graph on the reception signal, where the signal detection and channel estimation section (61) estimates interfering components from base station apparatuses of the other cells except a desired base station apparatus included in the reception signal at a symbol level, and reuses the interfering components in the signal detection and channel estimation processing based on the factor graph.
    Type: Application
    Filed: June 10, 2011
    Publication date: June 20, 2013
    Applicant: NTT DOCOMO, INC.
    Inventors: Tetsushi Abe, Alexander Tyrrell, Auer Gunther
  • Publication number: 20120063447
    Abstract: A node in a wireless system using transmit/receive slots for a communication among the nodes in the wireless system comprises a reception block configured to receive from a transmitting node in the wireless system a synchronization signal, and to derive from the synchronization signal a time offset and a frequency offset between the clock generators in the node and in the transmitting node. Further, a slot synchronization block is provided including the clock generator which is updated based on the derived time offset and the derived frequency offset. Further, a transmission block is provided for transmitting data. The slot synchronization block sets a slot start of a slot based on the derived time offset and sets a slot of a subsequent slot based on the derived frequency offset.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 15, 2012
    Inventors: Alexander Tyrrell, Gunther Auer