Patents by Inventor Stefan Mueller-Weinfurtner
Stefan Mueller-Weinfurtner 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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Publication number: 20210392600Abstract: Examples provide a method for clock calibration. A wireless communication device includes a first clock and a second clock. The first clock is turned off but the second clock runs during the inactive state of the wireless communication device. A frequency offset of the first clock is measured with respect to a reference frequency based on a signal received from a network. A virtual timer, which is a software-based timer is updated based on the frequency offset. A drift of the second clock is measured over a predetermined time interval based on the virtual timer. The virtual timer is restored based on the drift after wake-up from the inactive state. Alternatively, a clock frequency relation between the first clock and the second clock may be measured and a phase locked loop (PLL) may be controlled based on the measured clock frequency relation.Type: ApplicationFiled: December 18, 2017Publication date: December 16, 2021Inventors: Bernd SCHMANDT, Frank HUERTGEN, Michael Mike MEIXNER, Admir BURNIC, Stefan MEYER, Stefan MUELLER-WEINFURTNER, Bernd SCHALLER
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Patent number: 10560125Abstract: This disclosure relates to a data processing device, comprising: a digital front end (DFE) configured to convert an antenna signal to digital data, wherein the digital data comprises a plurality of data symbols; a baseband (BB) circuitry configured to process the digital data in baseband; and a digital interface between the DFE and the BB circuitry, wherein the DFE comprises a data compression circuitry configured to compress the plurality of data symbols for use in transmission via the digital interface to the BB circuitry.Type: GrantFiled: July 17, 2018Date of Patent: February 11, 2020Assignee: Intel CorporationInventors: Shilpa Talwar, Christian Drewes, Andreas Augustin, Peter Noest, Stefan Mueller-Weinfurtner, Oner Orhan, Hosein Nikopour, Junyoung Nam
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Publication number: 20190238163Abstract: This disclosure relates to a data processing device, comprising: a digital front end (DFE) configured to convert an antenna signal to digital data, wherein the digital data comprises a plurality of data symbols; a baseband (BB) circuitry configured to process the digital data in baseband; and a digital interface between the DFE and the BB circuitry, wherein the DFE comprises a data compression circuitry configured to compress the plurality of data symbols for use in transmission via the digital interface to the BB circuitry.Type: ApplicationFiled: July 17, 2018Publication date: August 1, 2019Inventors: Shilpa Talwar, Christian Drewes, Andreas Augustin, Peter Noest, Stefan Mueller-Weinfurtner, Oner Orhan, Hosein Nikopour, Junyoung Nam
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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: 9898034Abstract: A data processing device is described comprising a first clock generator configured to generate a first clock signal with a first frequency; a second clock generator configured to generate a second clock signal with a second frequency, wherein the second frequency is higher than the first frequency; and a processing circuit configured to sample a clock cycle number of the second clock signal at a plurality of sample times given by the first clock signal and determine a relationship between the first frequency and the second frequency based on a minimization of a measure of a deviation of the sampled clock cycle numbers from the clock cycle numbers of the second clock signal at the plurality of sample times expected according to the determined relationship.Type: GrantFiled: September 2, 2014Date of Patent: February 20, 2018Assignee: Intel IP CorporationInventors: Stefan Meyer, Stefan Mueller-Weinfurtner
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Patent number: 9893842Abstract: A technique of processing an Automatic Repeat Request (ARQ) transmission is disclosed. As to a method aspect of the technique, the method comprises the steps of requesting a retransmission of a transport block; receiving the retransmission of the transport block; and detecting modulation symbols. The retransmission is requested in response to an error-detecting code indicating an error in the transport block as received in at least one previous transmission. The modulation symbols are detected based on at least a part of the received retransmission and information from the at least one previous transmission. At least in some embodiments, a detection rate is thus improved.Type: GrantFiled: December 28, 2011Date of Patent: February 13, 2018Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Franz Eder, Stefan Mueller-Weinfurtner
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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: 9294999Abstract: A technique for maintaining a radio time base used to schedule communication in a radio network (100) is provided. A method implementation (300) of the technique comprises determining (310) a course of a frequency relation; switching off (330) a reference oscillator (210) during a period of reduced power (418; 420); predicting (320) the frequency relation; restoring (340) the radio time base in or after the period of reduced power; and communicating (350) in the radio network at a time determined by the restored radio time base. The frequency relation is a relation between the reference oscillator and a clock (214). The predicting is based on a result of the determination and the restoring is based on a result of the prediction. The frequency relation is predicted for a given time in or after the period of reduced power.Type: GrantFiled: July 5, 2011Date of Patent: March 22, 2016Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventor: Stefan Mueller-Weinfurtner
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Patent number: 9225476Abstract: A communication device (100) for communicating in accordance with a hybrid automatic repeat request protocol, the communication device (100) comprising a receiving unit (102) adapted for receiving a communication message including soft-bit values, the soft-bit values representing reliability information for received verification data verifying proper transmission of the communication message, a storage unit (104) adapted for storing the soft-bit values, and a storage management unit (106) adapted for dynamically managing storage of the soft-bit values in the storage unit (104) so that soft-bit values failing to fulfill at least one relevance criteria are not maintained in the storage unit (104).Type: GrantFiled: May 13, 2014Date of Patent: December 29, 2015Assignee: UNWIRED PLANET, LLCInventors: Stefan Mueller-Weinfurtner, Steffen Reinhardt, Udo Wachsmann
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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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Patent number: 9025472Abstract: A technique for radio resource management is proposed for controlling a wireless transceiver in a cellular communication system that comprises a scheduling channel configured to transport relative scheduling grants for signalling adjustments in transmission resources previously granted to the wireless transceiver. A method embodiment of this technique comprises the steps of deriving an amplitude parameter indicative of an instantaneous amplitude level of the scheduling channel, determining a threshold value taking into account the amplitude parameter, processing a scheduling signal received over the scheduling channel to obtain a signal sample comprising a relative scheduling grant, and subjecting the signal sample to a threshold decision based on the threshold value to decode the relative scheduling grant.Type: GrantFiled: May 20, 2009Date of Patent: May 5, 2015Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Franz Eder, Stefan Mueller-Weinfurtner
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Patent number: 8995583Abstract: A technique for decoding a signal in a communication network is provided. A method implementation of the technique comprises the steps of receiving a signal; identifying a position in the signal; initializing a Viterbi state metric; and decoding the encoded signal by means of a wrap-around Viterbi algorithm. The received signal comprises information, wherein the signal is encoded by a tail-biting convolutional code. The identified position relates to a known portion of the information. The initialized Viterbi state metric is consistent with the known portion of the information. The decoding uses the initial Viterbi state metric, wherein the decoding starts at a decoding step following the identified position.Type: GrantFiled: July 30, 2010Date of Patent: March 31, 2015Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Stefan Mueller-Weinfurtner, Matthias Kamuf
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Publication number: 20150074444Abstract: A data processing device is described comprising a first clock generator configured to generate a first clock signal with a first frequency; a second clock generator configured to generate a second clock signal with a second frequency, wherein the second frequency is higher than the first frequency; and a processing circuit configured to sample a clock cycle number of the second clock signal at a plurality of sample times given by the first clock signal and determine a relationship between the first frequency and the second frequency based on a minimization of a measure of a deviation of the sampled clock cycle numbers from the clock cycle numbers of the second clock signal at the plurality of sample times expected according to the determined relationship.Type: ApplicationFiled: September 2, 2014Publication date: March 12, 2015Inventors: Stefan Meyer, Stefan Mueller-Weinfurtner
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Patent number: 8929488Abstract: A technique for processing information in a wireless communication network is described. In a method in accordance with the technique, a signal encoded with a convolution code is received. The encoded signal comprises information and a check value. The encoded signal is decoded using a Viterbi algorithm to derive the information and the check value. The decoding includes computing a Viterbi state metric. A reliability parameter is then determined based on the Viterbi state metric. The information is selectively processed depending on both the check value and the reliability parameter.Type: GrantFiled: May 6, 2010Date of Patent: January 6, 2015Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Stefan Müller-Weinfurtner, Toni Brkic, Udo Wachsmann
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Publication number: 20140376358Abstract: A technique of processing an Automatic Repeat Request (ARQ) transmission is disclosed. As to a method aspect of the technique, the method comprises the steps of requesting a retransmission of a transport block; receiving the retransmission of the transport block; and detecting modulation symbols. The retransmission is requested in response to an error-detecting code indicating an error in the transport block as received in at least one previous transmission. The modulation symbols are detected based on at least a part of the received retransmission and information from the at least one previous transmission. At least in some embodiments, a detection rate is thus improved.Type: ApplicationFiled: December 28, 2011Publication date: December 25, 2014Applicant: Telefonaktiebolaget L M Ericsson (publ)Inventors: Franz Eder, Stefan Mueller-Weinfurtner
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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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Publication number: 20140250343Abstract: A communication device (100) for communicating in accordance with a hybrid automatic repeat request protocol, the communication device (100) comprising a receiving unit (102) adapted for receiving a communication message including soft-bit values, the soft-bit values representing reliability information for received verification data verifying proper transmission of the communication message, a storage unit (104) adapted for storing the soft-bit values, and a storage management unit (106) adapted for dynamically managing storage of the soft-bit values in the storage unit (104) so that soft-bit values failing to fulfill at least one relevance criteria are not maintained in the storage unit (104).Type: ApplicationFiled: May 13, 2014Publication date: September 4, 2014Applicant: Unwired Planet, LLCInventors: Stefan MUELLER-WEINFURTNER, Steffen REINHARDT, Udo WACHSMANN
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Patent number: 8751890Abstract: A communication device (100) for communicating in accordance with a hybrid automatic repeat request protocol, the communication device (100) comprising a receiving unit (102) adapted for receiving a communication message including soft-bit values, the soft-bit values representing reliability information for received verification data verifying proper transmission of the communication message, a storage unit (104) adapted for storing the soft-bit values, and a storage management unit (106) adapted for dynamically managing storage of the soft-bit values in the storage unit (104) so that soft-bit values failing to fulfill at least one relevance criteria are not maintained in the storage unit (104).Type: GrantFiled: December 18, 2008Date of Patent: June 10, 2014Assignee: Unwired Planet, LLCInventors: Stefan Mueller-Weinfurtner, Steffen Reinhardt, Udo Wachsmann
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Publication number: 20140140255Abstract: A technique for maintaining a radio time base used to schedule communication in a radio network (100) is provided. A method implementation (300) of the technique comprises determining (310) a course of a frequency relation; switching off (330) a reference oscillator (210) during a period of reduced power (418; 420); predicting (320) the frequency relation; restoring (340) the radio time base in or after the period of reduced power; and communicating (350) in the radio network at a time determined by the restored radio time base. The frequency relation is a relation between the reference oscillator and a clock (214). The predicting is based on a result of the determination and the restoring is based on a result of the prediction. The frequency relation is predicted for a given time in or after the period of reduced power.Type: ApplicationFiled: July 5, 2011Publication date: May 22, 2014Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventor: Stefan Mueller-Weinfurtner
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Patent number: 8693460Abstract: The invention relates to a technique for controlling a synchronization of a terminal device (10) with a wireless network, e.g. an LTE network, wherein data are transmitted as a continuous data signal on a radio interface (11, 12) while being processed block-wise in the terminal (10). A method embodiment of the technique for achieving at least a downlink (11) synchronization comprises establishing a time-address mapping (TAM, 36) indicative of an association of a reference time value of an internal clock (32) with a reference address in the reception data buffer (16); determining an address of data samples representing the received data block in the reception data buffer (16) based on the time-address mapping; and initiating a block-wise reading of the data block from the reception data buffer (16) based on the determined address.Type: GrantFiled: September 5, 2008Date of Patent: April 8, 2014Assignee: Unwired Planet, LLCInventors: Dietmar Lipka, Stefan Mueller-Weinfurtner, Steffen Reinhardt, Udo Wachsmann