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).
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Patent number: 10567264Abstract: 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: GrantFiled: April 6, 2017Date of Patent: February 18, 2020Assignee: ROHDE & SCHWARZ GMBH & CO. KGInventors: Alexander Tyrrell, Francesco Rossetto, William Powell
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Patent number: 10536364Abstract: 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: GrantFiled: May 13, 2017Date of Patent: January 14, 2020Assignee: ROHDE & SCHWARZ GMBH & CO. KGInventors: Alexander Tyrrell, Francesco Rossetto, William Powell
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Patent number: 10375589Abstract: 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: GrantFiled: April 8, 2016Date of Patent: August 6, 2019Assignee: ROHDE & SCHWARZ GMBH & CO. KGInventors: Alexander Tyrrell, Thiago Moraes, William Powell
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Publication number: 20180295046Abstract: 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: ApplicationFiled: April 6, 2017Publication date: October 11, 2018Inventors: Alexander Tyrrell, Francesco Rossetto, William Powell
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Publication number: 20180295047Abstract: 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: ApplicationFiled: May 13, 2017Publication date: October 11, 2018Inventors: Alexander Tyrrell, Francesco Rossetto, William Powell
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Patent number: 9853780Abstract: 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: GrantFiled: October 24, 2012Date of Patent: December 26, 2017Assignee: ROHDE & SCHWARZ GMBH & CO. KGInventors: Alexander Tyrrell, William Powell
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Publication number: 20170295507Abstract: 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: ApplicationFiled: April 8, 2016Publication date: October 12, 2017Inventors: Alexander Tyrrell, Thiago Moraes, William Powell
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Patent number: 9037171Abstract: 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: GrantFiled: June 10, 2011Date of Patent: May 19, 2015Assignee: NTT DOCOMO, INC.Inventors: Tetsushi Abe, Alexander Tyrrell, Auer Gunther
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Publication number: 20140281782Abstract: 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: ApplicationFiled: October 24, 2012Publication date: September 18, 2014Inventors: Alexander Tyrrell, William Powell
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Node in a wireless system and method for time and frequency synchronizing nodes in a wireless system
Patent number: 8675636Abstract: 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: GrantFiled: September 13, 2011Date of Patent: March 18, 2014Assignee: NTT DoCoMo, Inc.Inventors: Alexander Tyrrell, Gunther Auer -
Publication number: 20130157704Abstract: 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: ApplicationFiled: June 10, 2011Publication date: June 20, 2013Applicant: NTT DOCOMO, INC.Inventors: Tetsushi Abe, Alexander Tyrrell, Auer Gunther
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NODE IN A WIRELESS SYSTEM AND METHOD FOR TIME AND FREQUENCY SYNCHRONIZING NODES IN A WIRELESS SYSTEM
Publication number: 20120063447Abstract: 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: ApplicationFiled: September 13, 2011Publication date: March 15, 2012Inventors: Alexander Tyrrell, Gunther Auer