Patents by Inventor Henrik Egnell
Henrik Egnell 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: 11050467Abstract: Ways to mitigate problems caused by too narrow transmission zero (nulls) without significantly increasing computational complexity. For example, the problem can be mitigated by modifying MU-MIMO transmission schemes so that the nulls are widened. This way, the UEs that are to be protected from transmission interference stay within the nulls, despite the angular disturbances.Type: GrantFiled: March 21, 2018Date of Patent: June 29, 2021Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Ari Kangas, Henrik Egnell, Torbjörn Wigren
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Publication number: 20200412419Abstract: Ways to mitigate problems caused by too narrow transmission zero (nulls) without significantly increasing computational complexity. For example, the problem can be mitigated by modifying MU-MIMO transmission schemes so that the nulls are widened. This way, the UEs that are to be protected from transmission interference stay within the nulls, despite the angular disturbances.Type: ApplicationFiled: March 21, 2018Publication date: December 31, 2020Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Ari KANGAS, Henrik EGNELL, Torbjörn WIGREN
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Patent number: 10536177Abstract: A radio communication receiver and a method performed by the radio communication receiver for configuring a Notch filter of the radio communication receiver. The method comprises retrieving stored and previously determined filter coefficients from a set of filter coefficients, where the retrieved filter coefficients constitute a fraction of the total number of filter coefficients; and setting the rest of the filter coefficients to one. The method further comprises normalising the retrieved filter coefficients; and transforming the filter coefficients such that the Notch position ends up at the one or more frequencies to be filtered out.Type: GrantFiled: June 15, 2016Date of Patent: January 14, 2020Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Kazimierz Koziarz, Erik Larsson, Henrik Egnell
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Publication number: 20190158132Abstract: A radio communication receiver and a method performed by the radio communication receiver for configuring a Notch filter of the radio communication receiver. The method comprises retrieving stored and previously determined filter coefficients from a set of filter coefficients, where the retrieved filter coefficients constitute a fraction of the total number of filter coefficients; and setting the rest of the filter coefficients to one. The method further comprises normalising the retrieved filter coefficients; and transforming the filter coefficients such that the Notch position ends up at the one or more frequencies to be filtered out.Type: ApplicationFiled: June 15, 2016Publication date: May 23, 2019Inventors: Kazimierz KOZIARZ, Erik LARSSON, Henrik EGNELL
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Patent number: 10028183Abstract: A method performed by a first network node of a wireless communication network for handling uplink signals sent by a UE. The wireless communication network comprises a serving network node responsible for transmitting downlink signals to the UE, and a non-serving network node capable of receiving uplink signals sent by the UE. The non-serving network node is the first network node and the serving network node is a second network node of the communication network, or vice versa. The method comprises receiving an uplink signal from the UE, measuring signal quality on the received uplink signal, and receiving signal quality information from the second network node regarding signal quality measured by the second network node on the uplink signal received by the second network node, to detect imbalances in experienced signal quality between the first network node and the second network node.Type: GrantFiled: October 3, 2014Date of Patent: July 17, 2018Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Pär Ankel, Henrik Egnell, Billy Hogan, Anders Lamm, Erik Larsson
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Publication number: 20170245183Abstract: A method performed by a first network node of a wireless communication network for handling uplink signals sent by a UE. The wireless communication network comprises a serving network node responsible for transmitting downlink signals to the UE, and a non-serving network node capable of receiving uplink signals sent by the UE. The non-serving network node is the first network node and the serving network node is a second network node of the communication network, or vice versa. The method comprises receiving an uplink signal from the UE, measuring signal quality on the received uplink signal, and receiving signal quality information from the second network node regarding signal quality measured by the second network node on the uplink signal received by the second network node, to detect imbalances in experienced signal quality between the first network node and the second network node.Type: ApplicationFiled: October 3, 2014Publication date: August 24, 2017Inventors: Pär ANKEL, Henrik EGNELL, Billy HOGAN, Anders LAMM, Erik LARSSON
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Patent number: 9635674Abstract: A radio base station (RBS) and a method performed by an RBS for scheduling uplink resources to at least one UE are provided. The RBS comprises at least two receiving antenna branches and the RBS is operable in a radio communication network. The method comprises receiving transmissions from the at least one UE by means of the at least two receiving antenna branches; and determining at least one parameter relating to signal quality of the received transmissions. The method further comprises determining a diversity gain of the at least two receiving antenna branches, wherein the diversity gain is determined based on the determined parameter(s); and scheduling uplink transmissions for the at least one UE based on the determined diversity gain.Type: GrantFiled: December 19, 2012Date of Patent: April 25, 2017Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Ulf Skärby, Pär Ankel, Henrik Egnell, Maria Henriksson, Billy Hogan, Anders Lamm, Marc Mjögeman, Gunilla Sjöström, Torbjörn Wigren, Zhang Zhang
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Patent number: 9307420Abstract: A method for noise rise estimation in a wireless communication system comprises measuring (210) of received total wideband power of an antenna a plurality of times. An estimate of a noise floor measure is computed (212) based on at least a number of the measured received total wideband powers of the antenna. Interference whitening of a received signal is performed (214) per user for a multitude of users. A useful signal power per user after the interference whitening, preferably Frequency Domain Equalization, is determined (216). A noise rise measure per user is calculated (220), based at least on the useful signal power per user and the noise floor measure. The calculation in turn comprises compensation of the noise rise measure per user for the effects of the interference whitening. An arrangement for noise rise estimation is adapted for such a method. A radio base station comprises such an arrangement.Type: GrantFiled: October 1, 2010Date of Patent: April 5, 2016Assignee: TELEFONAKTIEBOLAGET L M ERICSSONInventors: Torbjörn Wigren, Henrik Egnell, Ari Kangas
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Publication number: 20150312916Abstract: A radio base station (RBS) and a method performed by an RBS for scheduling uplink resources to at least one UE are provided. The RBS comprises at least two receiving antenna branches and the RBS is operable in a radio communication network. The method comprises receiving transmissions from the at least one UE by means of the at least two receiving antenna branches; and determining at least one parameter relating to signal quality of the received transmissions. The method further comprises determining a diversity gain of the at least two receiving antenna branches, wherein the diversity gain is determined based on the determined parameter(s); and scheduling uplink transmissions for the at least one UE based on the determined diversity gain.Type: ApplicationFiled: December 19, 2012Publication date: October 29, 2015Inventors: Ulf SKÄRBY, Pär ANKEL, Henrik EGNELL, Maria HENRIKSSON, Billy HOGAN, Anders LAMM, Marc MJÖGEMAN, Gunilla SJÖSTRÖM, Torbjörn WIGREN, Zhang ZHANG
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Patent number: 9054903Abstract: A method for equalizing a received radio signal in a WCDMA system, comprises receiving (210), in a radio receiver, of a digital radio signal spread by scrambling codes. A channel estimation is performed (230) on the received digital radio signal for a plurality of channels. The received digital radio signal is in an equalizer equalized (240) into an equalized digital radio signal. This equalizing is performed by combining a plurality of part signals, deduced from the digital radio signal, with a respective delay and a respective combining weight. The equalizing (240) comprises provision of the combining weights based on a signal impairment matrix having elements compensated for systematic colouring caused by said scrambling codes.Type: GrantFiled: June 10, 2011Date of Patent: June 9, 2015Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Ari Kangas, Henrik Egnell, Stephane Tessier
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Patent number: 8971386Abstract: The invention relates to the field of radio signal receivers for use in wireless communication networks. In particular to a receiver unit having at least one antenna input for receiving multipath radio signals via a radio unit and at least one antenna from one or more user equipments is provided. The receiver unit comprises: a despreading unit configured to despread a multipath radio signal in the received multipath radio signals using a number of despreading fingers corresponding to a number of delay positions in the multipath radio signal which corresponds to a number of paths in the multipath radio signal, and a combining unit configured to apply at least one weight to the output of each of the number of allocated despreading fingers and combine the weighted outputs into a resulting equalized radio signal.Type: GrantFiled: August 17, 2011Date of Patent: March 3, 2015Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Henrik Egnell, Nina Blom
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Publication number: 20140198829Abstract: The invention relates to the field of radio signal receivers for use in wireless communication networks. In particular to a receiver unit having at least one antenna input for receiving multipath radio signals via a radio unit and at least one antenna from one or more user equipments is provided. The receiver unit comprises: a despreading unit configured to despread a multipath radio signal in the received multipath radio signals using a number of despreading fingers corresponding to a number of delay positions in the multipath radio signal which corresponds to a number of paths in the multipath radio signal, and a combining unit configured to apply at least one weight to the output of each of the number of allocated despreading fingers and combine the weighted outputs into a resulting equalized radio signal.Type: ApplicationFiled: August 17, 2011Publication date: July 17, 2014Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Henrik Egnell, Nina Blom
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Publication number: 20140133542Abstract: A method for equalizing a received radio signal in a WCDMA system, comprises receiving (210), in a radio receiver, of a digital radio signal spread by scrambling codes. A channel estimation is performed (230) on the received digital radio signal for a plurality of channels. The received digital radio signal is in an equalizer equalized (240) into an equalized digital radio signal. This equalizing is performed by combining a plurality of part signals, deduced from the digital radio signal, with a respective delay and a respective combining weight. The equalizing (240) comprises provision of the combining weights based on a signal impairment matrix having elements compensated for systematic colouring caused by said scrambling codes.Type: ApplicationFiled: June 10, 2011Publication date: May 15, 2014Applicant: Telefonaktiebolaget L M Ericsson (PUBL)Inventors: Ari Kangas, Henrik Egnell, Stephane Tessier
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Publication number: 20130308480Abstract: A method for noise rise estimation in a wireless communication system comprises measuring (210) of received total wideband power of an antenna a plurality of times. An estimate of a noise floor measure is computed (212) based on at least a number of the measured received total wideband powers of the antenna. Interference whitening of a received signal is performed (214) per user for a multitude of users. A useful signal power per user after the interference whitening, preferably Frequency Domain Equalization, is determined (216). A noise rise measure per user is calculated (220), based at least on the useful signal power per user and the noise floor measure. The calculation in turn comprises compensation of the noise rise measure per user for the effects of the interference whitening. An arrangement for noise rise estimation is adapted for such a method. A radio base station comprises such an arrangement.Type: ApplicationFiled: October 1, 2010Publication date: November 21, 2013Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Torbjörn Wigren, Henrik Egnell, Ari Kangas
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Patent number: 6292136Abstract: The present invention is in general related to tracking of multiple targets by means of measurements by various sensors. In particular the invention provides procedures for track initiation during multiple target tracking by means of measurements from passive sensors. The invention defines a quality measure for each tentative new target, by which the tentative targets are sorted and selected. The calculation of the parameters of possible targets and their covariance are preferably performed in a recursive manner. The track initiation comprises the steps of creating strobe tracks, calculating strobe track crosses, selecting a strobe track cross as a probable target and creating a target track.Type: GrantFiled: September 14, 1999Date of Patent: September 18, 2001Assignee: Saab ABInventor: Henrik Egnell