Patents by Inventor Rainer Bachl
Rainer Bachl 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: 9991982Abstract: A technique for cancelling inter-cell or intra-cell interference in a cellular communication network is described. A method implementation of that technique performed in an interfered terminal comprises receiving a signal, wherein the received signal comprises an interfering signal destined to at least one further terminal different from the interfered terminal. In a next step, control information pertaining to the at least one further terminal is determined and the interfering signal is decoded based on the control information so as to generate decoded information. Then, the interfering signal is re-generated from the decoded information and the control information. Based on the re-generated signal the interfering signal is cancelled from the received signal.Type: GrantFiled: January 21, 2013Date of Patent: June 5, 2018Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Udo Wachsmann, Rainer Bachl, Stefan Mueller-Weinfurtner
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Patent number: 9860764Abstract: A technique for performing channel estimation for a wireless communication channel is provided. A determining circuit determines a channel condition for the wireless communication channel. A filtering circuit applies an estimation filter to reference signals transmitted on the wireless communication channel. The filter estimates coefficients for a subset of Resource Elements transmitted on the wireless communication channel. The subset is chosen depending on the determined channel condition. An interpolating circuit interpolates the estimated coefficients for Resource Elements that are not included in the subset.Type: GrantFiled: May 10, 2013Date of Patent: January 2, 2018Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Aravindh Krishnamoorthy, Rainer Bachl, Thomas Wagner
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Patent number: 9775109Abstract: A technique for controlling a receiver to enter a micro sleep mode during which at least one receiver component is temporarily switched off is described. The receiver is configured to process sub-frames each having a first sub-frame portion followed by a second sub-frame portion, the first sub-frame portion carrying information indicative of whether or not the second sub-frame portion needs to be decoded.Type: GrantFiled: October 12, 2010Date of Patent: September 26, 2017Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Steffen Reinhardt, Rainer Bachl, Stefan Mueller-Weinfurtner
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Patent number: 9774308Abstract: The invention refers to performing an automatic gain control—AGC—with respect to a received signal comprising a plurality of consecutive subframes (S1 S12), comprising identifying subframes that are associated to a first subset of the consecutive subframes (S1, S3, S4, S5, S7. S8, S9, S11, S12), performing a first (10) signal power measurement with respect to the received signal during the first subset of the consecutive subframes, and performing the AGC according to the first signal power measurement. The invention further refers to a user equipment and to a corresponding computer program.Type: GrantFiled: December 14, 2012Date of Patent: September 26, 2017Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Shaohua Li, Rainer Bachl
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Patent number: 9668226Abstract: The disclosure relates to methods and devices for performing uplink power control in a radio communication system. An example method comprises a step of receiving, at a user equipment (UE) a transmit power control (TPC) command. The method also comprises, if the UE does not have an uplink transmission scheduled for a subframe associated with the TPC command, a step of accumulating, by the UE, the TPC command with previously received TPC commands based on whether the UE has reached a maximum transmit power or a minimum transmit power in a reference format for a Physical Uplink Shared Channel (PUSCH), Sounding Reference Signal (SRS) or Physical Uplink Control Channel (PUCCH) transmission. Thus the UE is enabled to receive TPC commands while the UE is not transmitting anything in the uplink.Type: GrantFiled: February 9, 2016Date of Patent: May 30, 2017Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Daniel Larsson, Rainer Bachl, Dirk Gerstenberger, Tobias Tynderfeldt
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Patent number: 9560670Abstract: The invention concerns a method of managing coexisting packet streams (100, 110) in a wireless communication system, and a corresponding controller and a mobile terminal. A first packet stream (110) of the coexisting packet streams (100, 110) requires transmission resources of the wireless communication system at fixed time intervals, and a second packet stream (100) of the coexisting packet streams (100, 110) requires transmission resources of the wireless communication system at dynamically determined time intervals. A schedule defining allocations of transmission resources for the first packet stream (110) is set up. A request for an initial grant of transmission resources for a transmission of a data packet (101) of the second packet stream (100) is issued.Type: GrantFiled: March 19, 2008Date of Patent: January 31, 2017Assignee: Alcatel-Lucent USA Inc.Inventors: Rainer Bachl, Matthias Schneider, Antonella Faniuolo
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Publication number: 20160157188Abstract: The disclosure relates to methods and devices for performing uplink power control in a radio communication system. An example method comprises a step of receiving, at a user equipment (UE) a transmit power control (TPC) command. The method also comprises, if the UE does not have an uplink transmission scheduled for a subframe associated with the TPC command, a step of accumulating, by the UE, the TPC command with previously received TPC commands based on whether the UE has reached a maximum transmit power or a minimum transmit power in a reference format for a Physical Uplink Shared Channel (PUSCH), Sounding Reference Signal (SRS) or Physical Uplink Control Channel (PUCCH) transmission. Thus the UE is enabled to receive TPC commands while the UE is not transmitting anything in the uplink.Type: ApplicationFiled: February 9, 2016Publication date: June 2, 2016Inventors: Daniel LARSSON, Rainer BACHL, Dirk GERSTENBERGER, Tobias TYNDERFELDT
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Publication number: 20160127922Abstract: A technique for performing channel estimation for a wireless communication channel is provided. A determining circuit determines a channel condition for the wireless communication channel. A filtering circuit applies an estimation filter to reference signals transmitted on the wireless communication channel. The filter estimates coefficients for a subset of Resource Elements transmitted on the wireless communication channel. The subset is chosen depending on the determined channel condition. An interpolating circuit interpolates the estimated coefficients for Resource Elements that are not included in the subset.Type: ApplicationFiled: May 10, 2013Publication date: May 5, 2016Inventors: Aravindh KRISHNAMOORTHY, Rainer BACHL, Thomas WAGNER
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Patent number: 9288766Abstract: The disclosure relates to methods and devices for performing uplink power control in a radio communication system. An example method comprises a step of receiving, at a user equipment (UE) a transmit power control (TPC) command. The method also comprises, if the UE does not have an uplink transmission scheduled for a subframe associated with the TPC command, a step of accumulating, by the UE, the TPC command with previously received TPC commands based on whether the UE has reached a maximum transmit power or a minimum transmit power in a reference format for a Physical Uplink Shared Channel (PUSCH), Sounding Reference Signal (SRS) or Physical Uplink Control Channel (PUCCH) transmission. Thus the UE is enabled to receive TPC commands while the UE is not transmitting anything in the uplink.Type: GrantFiled: December 8, 2014Date of Patent: March 15, 2016Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Daniel Larsson, Rainer Bachl, Dirk Gerstenberger, Tobias Tynderfeldt
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Publication number: 20150358101Abstract: A technique for cancelling inter-cell or intra-cell interference in a cellular communication network is described. A method implementation of that technique performed in an interfered terminal comprises receiving a signal, wherein the received signal comprises an interfering signal destined to at least one further terminal different from the interfered terminal. In a next step, control information pertaining to the at least one further terminal is determined and the interfering signal is decoded based on the control information so as to generate decoded information. Then, the interfering signal is re-generated from the decoded information and the control information. Based on the re-generated signal the interfering signal is cancelled from the received signal.Type: ApplicationFiled: January 21, 2013Publication date: December 10, 2015Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Udo Wachsmann, Rainer Bachl, Stefan Mueller-Weinfurtner
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Publication number: 20150311877Abstract: The invention refers to performing an automatic gain control—AGC—with respect to a received signal comprising a plurality of consecutive subframes (S1 S12), comprising identifying subframes that are associated to a first subset of the consecutive subframes (S1, S3, S4, S5, S7. S8, S9, S11, S12), performing a first (10) signal power measurement with respect to the received signal during the first subset of the consecutive subframes, and performing the AGC according to the first signal power measurement. The invention further refers to a user equipment and to a corresponding computer program.Type: ApplicationFiled: December 14, 2012Publication date: October 29, 2015Applicant: Telefonaktiebolaget L M Ericsson (publ)Inventors: Shaohua Li, Rainer Bachl
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Patent number: 9124467Abstract: The invention refers to generating a digital signal from an analog signal, wherein the analog signal is amplified according to a gain control value before being converted to a digital value by means of an analog-to-digital converter, wherein a DC offset value of the analog signal is determined, and the gain control value is generated as a function of the dynamic range of the analog-to-digital converter and the DC offset value. The invention further refers to a corresponding circuit and a computer program.Type: GrantFiled: November 30, 2010Date of Patent: September 1, 2015Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Rainer Bachl, Steffen Reinhardt
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Publication number: 20150223174Abstract: The disclosure relates to methods and devices for performing uplink power control in a radio communication system. An example method comprises a step of receiving, at a user equipment (UE) a transmit power control (TPC) command. The method also comprises, if the UE does not have an uplink transmission scheduled for a subframe associated with the TPC command, a step of accumulating, by the UE, the TPC command with previously received TPC commands based on whether the UE has reached a maximum transmit power or a minimum transmit power in a reference format for a Physical Uplink Shared Channel (PUSCH), Sounding Reference Signal (SRS) or Physical Uplink Control Channel (PUCCH) transmission. Thus the UE is enabled to receive TPC commands while the UE is not transmitting anything in the uplink.Type: ApplicationFiled: December 8, 2014Publication date: August 6, 2015Inventors: Daniel LARSSON, Rainer BACHL, Dirk GERSTENBERGER, Tobias TYNDERFELDT
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Patent number: 8953562Abstract: The present invention provides a method and apparatus for using uplink reference signals for access grant requests. The method includes determining that at least one mobile unit is requesting access to at least one uplink channel based on information indicative of a change in a masking sequence applied to at least one reference signal. Another embodiment of the present invention includes providing a first reference signal modulated by a first masking sequence to indicate a request for access to at least one uplink channel.Type: GrantFiled: February 1, 2007Date of Patent: February 10, 2015Assignee: Alcatel LucentInventors: Rainer Bachl, Fang-Chen Cheng, Jung A. Lee, Lei Song, Said Tatesh
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Patent number: 8942222Abstract: The present invention provides a method of wireless communication over a communication link including at least one carrier that comprises a plurality of sub-carriers. The method includes modifying at least one frequency of at least one uplink sub-carrier in response to a signal indicating a modification of the frequency.Type: GrantFiled: January 29, 2007Date of Patent: January 27, 2015Assignee: Alcatel LucentInventors: Rainer Bachl, Jung A. Lee
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Patent number: 8934403Abstract: The disclosure relates to methods and devices for performing uplink power control in a radio communication system. An example method comprises a step of receiving, at a user equipment (UE) a transmit power control (TPC) command. The method also comprises, if the UE does not have an uplink transmission scheduled for a subframe associated with the TPC command, a step of accumulating, by the UE, the TPC command with previously received TPC commands based on whether the UE has reached a maximum transmit power or a minimum transmit power in a reference format for a Physical Uplink Shared Channel (PUSCH), Sounding Reference Signal (SRS) or Physical Uplink Control Channel (PUCCH) transmission. Thus the UE is enabled to receive TPC commands while the UE is not transmitting anything in the uplink.Type: GrantFiled: January 27, 2012Date of Patent: January 13, 2015Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Daniel Larsson, Rainer Bachl, Dirk Gerstenberger, Tobias Tynderfeldt
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Patent number: 8908555Abstract: A technique for performing channel estimation based on a received signal comprising a first signal part and a second signal part in the presence of an unknown phase discontinuity between the first signal part and the second signal part is presented. A method implementation of this technique comprises providing a first channel parameter that is based on the first signal part, determining a second channel parameter based on the second signal part, estimating the phase discontinuity from the first channel parameter and the second channel parameter, updating the first channel parameter based on the estimated phase discontinuity, and determining a channel estimate based on the second signal part including performing channel estimation filtering using the updated first channel parameter as filter state information.Type: GrantFiled: September 27, 2010Date of Patent: December 9, 2014Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Rainer Bachl, Stefan Mueller-Weinfurtner
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Patent number: 8824973Abstract: A method for filtering measurement values of a measurement quantity obtained from a communication between a mobile device and a mobile communication network and a mobile communication network device adapted to filter such measurement values are provided. A measurement value for the measurement quantity is to be periodically received at fixed points in time. The measurement value is filtered using a digital filter for obtaining a filtering result, wherein the filtering of the measurement value includes the weighting of the measurement value with a weighting coefficient. The filtering result can be provided for an adaptation of the communication link to the mobile device.Type: GrantFiled: December 10, 2009Date of Patent: September 2, 2014Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Thomas Kleinhenz, Rainer Bachl
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Publication number: 20130251078Abstract: The invention refers to generating a digital signal from an analog signal, wherein the analog signal is amplified according to a gain control value before being converted to a digital value by means of an analog-to-digital converter, wherein a DC offset value of the analog signal is determined, and the gain control value is generated as a function of the dynamic range of the analog-to-digital converter and the DC offset value. The invention further refers to a corresponding circuit and a computer program.Type: ApplicationFiled: November 30, 2010Publication date: September 26, 2013Applicant: Telefonaktiebolaget L.M. Ericsson (PUBL)Inventors: Rainer Bachl, Steffen Reinhardt
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Patent number: 8520755Abstract: The invention refers to a method of determining a channel quality of a communication channel between a wireless transmitter and a wireless receiver, comprising receiving a transport block with one or a plurality of a modulation symbols (y1, . . . , ym) comprising a plurality of encoded information bits (x1, . . . , xn), de-mapping the modulation symbols to a plurality of soft values (LLR1, . . . , LLRn), calculating a mutual information—MI—measure (MI) as a function of the plurality of soft values (LLR1, . . . , LLRn), wherein the MI measure is indicative of a mutual dependence between the information bits (x1, . . . , xn) and the corresponding soft values of said transport block, and determining a channel quality indication value (CQI-Index) as a function of the MI measure (MI). The invention further refers to a program and to a wireless receiver for performing the method.Type: GrantFiled: October 28, 2009Date of Patent: August 27, 2013Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Rainer Bachl, Shashi Kant