Patents by Inventor George Jongren

George Jongren 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: 10448274
    Abstract: Systems and methods for providing Channel State Information (CSI) feedback in a cellular communications network are disclosed. In some embodiments, a base station of a cellular communications network disables inter-subframe channel interpolation of CSI-RS estimates across subframes at the wireless device and receives one or more CSI reports from the wireless device that are generated by the wireless device with inter-subframe channel interpolation of CSI-RS estimates across subframes disabled in response to the base station disabling inter-subframe channel interpolation of CSI-RS estimates across subframes at the wireless device. In this manner, CSI feedback is improved particularly in embodiments in which the base station transmits a beamformed CSI-RS resource(s) and reuses the same CSI-RS resource(s) for different beams over time.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: October 15, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mattias Frenne, Johan Furuskog, George Jöngren, Robert M. Harrison
  • Publication number: 20190296811
    Abstract: Method and apparatus for conveying precoding information in a control message (M) from a first node (400) to a second node (402), with information on properties of an associated wireless data transmission (D) between the first and second nodes employing spatial multiplexing and precoding for the data transmission. The first node determines precoding parameters (P) for signal transmission to the receiving node, optionally based on feedback reports (F) from the receiving node. The first node encodes control information bits in precoding information fields of the control message by means of values in TBS fields of the control message, such that the TBS field values determine the interpretation of the bits in the precoding information field(s). The control message (M) is then sent to the second node.
    Type: Application
    Filed: June 14, 2019
    Publication date: September 26, 2019
    Inventor: George Jöngren
  • Publication number: 20190289484
    Abstract: A system and method for providing an eNodeB with the flexibility to configure a Channel State Information (CSI) report to match a specific Coordinated Multipoint (CoMP) transmission hypothesis, which is a candidate for a downlink transmission to a User Equipment (UE) is disclosed. A UE receives, from the eNodeB, a configuration message that specifies a CSI report. The CSI report is specified by a particular interference hypothesis and a particular desired signal hypothesis corresponding to data transmission over at least one effective channel characterized by a specific reference signal. The UE estimates interference according to the interference hypothesis, and/or estimates at least one effective channel by performing measurements on the specific reference signal, and determines a CSI report based on the interference estimation and on the estimated effective channel. The UE also transmits the CSI report to the eNodeB.
    Type: Application
    Filed: June 3, 2019
    Publication date: September 19, 2019
    Inventors: David HAMMARWALL, George JÖNGREN, Svante BERGMAN
  • Patent number: 10411779
    Abstract: According to one of the aspects, there is provided a method for providing channel state feedback related to a wireless link between a transmitter having multiple transmit antennas and a receiver having at least one receive antenna. The method comprises determining (S1) channel estimates for at least a subset of the effective channels between the transmitter and the receiver, each effective channel including a propagation channel, and signal paths in the transmitter and the receiver. The method also comprises determining (S2) frequency-independent and/or inter-antenna-independent channel state information associated with phase relaxation of at least the subset of the effective channels based on the channel estimates, and generating (S3) channel state feedback including at least a representation of the frequency-independent and/or inter-antenna-independent channel state information associated with the phase relaxation. The method further comprises transmitting (S4) the channel state feedback to the transmitter.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: September 10, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Mattias Frenne, Robert Mark Harrison, George Jöngren
  • Patent number: 10397917
    Abstract: Embodiments described herein provide a method in a network node for configuring interference measurements for a wireless device. According to the method, the network node receives information indicating whether a channel state information interference measurement (CSI-IM) resource configuration restriction applies for the wireless device. The network node further configures CSI-IM resources for the wireless device based on the information.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: August 27, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Xinghua Song, Erik Eriksson, Rui Fan, George Jöngren
  • Patent number: 10356814
    Abstract: Systems and methods for search area-based control channel monitoring are provided. According to one exemplary embodiment, a method is performed by a control node for communication with a user equipment. Further, the communication is structured in frames with each frame having subframes. The method includes transmitting, by the control node, a control channel in a search area that is in a subset of the subframes for a frame so as to enable the user equipment to monitor the control channel in only the subset of the subframes for that frame.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: July 16, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Christian Hoymann, George Jöngren, Lars Lindbom, Stefan Parkvall
  • Patent number: 10356637
    Abstract: Method and apparatus for enabling accurate link quality estimation of a wireless link between a sending node and a receiving node. When the sending node receives link state reports from the receiving node, it estimates the current state of the wireless link. The sending node also determines a measurement adjusting parameter if the link state reports are deemed inaccurate in relation to the estimated link state, based on a deviation between the received link state reports and the estimated actual link state. The sending node then sends the determined measurement adjusting parameter to the receiving node, and the receiving node provides a link state report based on signal measurements adjusted by the measurement adjusting parameter. The adjusted link state report can then be used for link adaptation of the wireless link and/or for packet scheduling decisions.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: July 16, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: David Hammarwall, George Jöngren, Magnus Lundevall
  • Publication number: 20190207656
    Abstract: The present embodiments disclose a network node (400); a method thereof; a user equipment (700) and a method thereof. The method performed by the network node (400) comprises: selecting (301) a cell-specific RS process; selecting (302) a beam scan pattern; selecting (303) 5 a UE (799); transmitting (304) a cell specific RS associated to the cell-specific RS process, to the selected UE (700); configuring (305) the UE with the selected cell-specific RS process and receiving (306) a beam report from the UE (700).
    Type: Application
    Filed: May 18, 2016
    Publication date: July 4, 2019
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Mats ÅHLANDER, Jing RAO, George JÖNGREN, Torbjörn WIGREN
  • Patent number: 10340993
    Abstract: There is disclosed a method of operating a transmitter arrangement for a wireless communication network, the transmitter arrangement adapted for beamforming. The method comprises determining a maximum power level mask for the power of transmission and/or beams in a critical angular interval, the maximum power level mask covering at least the critical angular interval and controlling beamforming based on the maximum power level mask.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: July 2, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Simon Järmyr, George Jöngren, Niklas Wernersson, Sebastian Faxér
  • Patent number: 10326502
    Abstract: Method and apparatus for conveying precoding information in a control message (M) from a first node (400) to a second node (402), with information on properties of an associated wireless data transmission (D) between the first and second nodes employing spatial multiplexing and precoding for the data transmission. The first node determines precoding parameters (P) for signal transmission to the receiving node, optionally based on feedback reports (F) from the receiving node. The first node encodes control information bits in precoding information fields of the control message by means of values in TBS fields of the control message, such that the TBS field values determine the interpretation of the bits in the precoding information field(s). The control message (M) is then sent to the second node.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: June 18, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: George Jöngren
  • Publication number: 20190182704
    Abstract: A unified, rank independent mapping between antenna ports and group/code pairs. Each antenna port is uniquely associated with one code division multiplexing (CDM) group and one orthogonal cover code (OCC). The mapping between antenna ports and group/code pairs is chosen such that, for a given antenna port, the CDM group and OCC will be the same for every transmission rank.
    Type: Application
    Filed: February 20, 2019
    Publication date: June 13, 2019
    Inventors: Yang Hu, David Astely, David Hammarwall, George Jöngren, Xinghua Song, Jianfeng Wang
  • Patent number: 10313912
    Abstract: A system and method for providing an eNodeB with the flexibility to configure a Channel State Information (CSI) report to match a specific Coordinated Multipoint (CoMP) transmission hypothesis, which is a candidate for a downlink transmission to a User Equipment (UE) is disclosed. A UE receives, from the eNodeB, a configuration message that specifies a CSI report. The CSI report is specified by a particular interference hypothesis and a particular desired signal hypothesis corresponding to data transmission over at least one effective channel characterized by a specific reference signal. The UE estimates interference according to the interference hypothesis, and/or estimates at least one effective channel by performing measurements on the specific reference signal, and determines a CSI report based on the interference estimation and on the estimated effective channel. The UE also transmits the CSI report to the eNodeB.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: June 4, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: David Hammarwall, George Jöngren, Svante Bergman
  • Patent number: 10291302
    Abstract: One aspect of the teachings presented herein provides advantages for sending precoder selection feedback from a transceiver to another transceiver, for use by the other transceiver as precoding recommendations. The transceiver generates two types of precoder selection feedback, where one type uses a smaller signaling payload than the other and therefore provides a distinct reduction in the signaling overhead associated with reporting precoding recommendations. The transceiver uses the reduced-overhead type of reporting when reporting at certain times, or on certain channels, or in response to control signaling. In one example, a UE in an LTE network sends precoder information to an eNodeB on the PUCCH by sending smaller-range index values that index only a subset of precoders, but sends full-range index values when reporting on the PUSCH, which index a larger set of precoders.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: May 14, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: David Hammarwall, George Jöngren
  • Publication number: 20190140712
    Abstract: A network node signals to a wireless communication device which precoders in a codebook are restricted from being used. The network node in this regard generates codebook subset restriction signaling that, for each of one or more groups of precoders, jointly restricts the precoders in the group by restricting a certain component (e.g., a certain beam precoder) that the precoders in the group have in common. This signaling may be for instance rank-agnostic signaling that jointly restricts the precoders in a group without regard to the precoders' transmission rank. Regardless, the network node sends the generated signaling to the wireless communication device.
    Type: Application
    Filed: January 4, 2019
    Publication date: May 9, 2019
    Inventors: Sebastian Faxér, Mattias Frenne, Simon Järmyr, George Jöngren, Niklas Wernersson
  • Patent number: 10250308
    Abstract: The teachings herein present a method and apparatus that implement and use a factorized precoder structure that is advantageous in terms of performance and efficiency. In particular, the teachings presented herein disclose an underlying precoder structure that allows for certain codebook reuse across different transmission scenarios, including for transmission from a single Uniform Linear Array (ULA) of transmit antennas and transmission from cross-polarized subgroups of such antennas. According to this structure, an overall precoder is constructed from a conversion precoder and a tuning precoder. The conversion precoder includes antenna-subgroup precoders of size NT/2, where NT represents the number of overall antenna ports considered. Correspondingly, the tuning precoder controls the offset of beam phases between the antenna-subgroup precoders, allowing the conversion precoder to be used with cross-polarized arrays of NT/2 antenna elements and with co-polarized arrays of NT antenna elements.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: April 2, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: David Hammarwall, George Jöngren
  • Publication number: 20190097699
    Abstract: A method performed by a base station of enabling a User Equipment (UE) to determine a precoder codebook in a wireless communication system is provided. The base station transmits, to the UE, information regarding precoder parameters enabling the UE to determine the precoder codebook. The precoder parameters are associated with a plurality of antenna ports of the base station. The precoder parameters relate to a first dimension and a second dimension of the precoder codebook. The plurality of antenna ports comprises a number of antenna ports that is a function of a number of antenna ports in the first dimension, and a number of antenna ports in the second dimension.
    Type: Application
    Filed: November 28, 2018
    Publication date: March 28, 2019
    Inventors: George Jöngren, Sebastian Faxér, Simon Järmyr, Niklas Wernersson
  • Patent number: 10244424
    Abstract: The present invention provides a unified, rank independent mapping between antenna ports and group/code pairs. Each antenna port is uniquely associated with one code division multiplexing (CDM) group and one orthogonal cover code (OCC). The mapping between antenna ports and group/code pairs is chosen such that, for a given antenna port, the CDM group and OCC will be the same for every transmission rank.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: March 26, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Yang Hu, David Astely, David Hammarwall, George Jöngren, Xinghua Song, Jianfeng Wang
  • Publication number: 20190052505
    Abstract: A wireless device, a network node and methods performed by the wireless device and the network node for providing a guard interval for transmissions in a communication system are presented. The network node (301, 401) receives a signal (307, 407) transmitted by the wireless device (305, 405) and obtains a series of symbols (311a,b, 411a-g) from the received signal. In one exemplary embodiment, a method by the wireless device in a wireless communication system includes generating (705) the signal comprising the series of symbols, including a pair of consecutive symbols (311a,b, 411e,f, 411f,g) that are to be transmitted at different power levels, with power ramping (316, 416, 418) to occur over a power transition period (315, 415, 417) between the consecutive symbols. Further, the method includes transmitting (707) the transmit signal with a guard interval (313, 413a,b) overlapping at least partly with the power transition period.
    Type: Application
    Filed: February 17, 2017
    Publication date: February 14, 2019
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Robert Baldemair, Martin Hessler, George Jöngren, Eleftherios Karipidis, Lars Lindbom
  • Publication number: 20190052440
    Abstract: The present invention relates to a method and arrangement for controlling re-transmission in a user equipment supporting uplink spatial multiplexing. The method comprises the steps of detecting an uplink grant on a physical downlink control channel, the uplink grant being valid for at least one transport block; detecting that at least one transport block is disabled, such that no grant is associated with the at least one transport block; and interpreting the at least one disabled transport block as an acknowledgement, ACK, of previous transmission corresponding to said disabled transport block irrespective of which indication is received on the reception status feedback channel for said previous transmission.
    Type: Application
    Filed: October 17, 2018
    Publication date: February 14, 2019
    Inventors: Richard Abrahamsson, Lisa Boström, George Jöngren, Magnus Stattin
  • Publication number: 20190045386
    Abstract: Systems and methods for providing Channel State Information (CSI) feedback in a cellular communications network are disclosed. In some embodiments, a base station of a cellular communications network disables inter-subframe channel interpolation of CSI-RS estimates across subframes at the wireless device and receives one or more CSI reports from the wireless device that are generated by the wireless device with inter-subframe channel interpolation of CSI-RS estimates across subframes disabled in response to the base station disabling inter-subframe channel interpolation of CSI-RS estimates across subframes at the wireless device. In this manner, CSI feedback is improved particularly in embodiments in which the base station transmits a beamformed CSI-RS resource(s) and reuses the same CSI-RS resource(s) for different beams over time.
    Type: Application
    Filed: October 8, 2018
    Publication date: February 7, 2019
    Inventors: Mattias Frenne, Johan Furuskog, George Jöngren, Robert M. Harrison