Patents by Inventor Christian Bergljung

Christian Bergljung 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: 11357044
    Abstract: Systems and methods for providing flexible time masks for transmission in a wireless communication system are disclosed. In some embodiments, a method of operation of a node in a wireless communication system comprises providing, to a wireless device, an indication of a position of a transient period during a time mask, where the position of the transient period is adapted to a clear channel assessment period at the wireless device or the position of the transient period is such that the transient period occurs at least partially during a clear channel assessment period. The time mask defines an OFF period during which a transmitter of the wireless device is to be off, an ON period during which the transmitter of the wireless device is to be on, and the transient period. The transient period is a period during which the transmitter of the wireless device is to ramp-up or ramp-down.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: June 7, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Christian Bergljung, Muhammad Kazmi, Imadur Rahman
  • Patent number: 11323232
    Abstract: This disclosure pertains to a method for operating a user equipment (10) in a radio access network, the method comprising transmitting signaling based on an emission control parameter, the emission control parameter being based on a TTI configuration and/or structure. There are also disclosed related devices and methods.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: May 3, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Muhammad Kazmi, Christian Bergljung, Imadur Rahman
  • Publication number: 20220069878
    Abstract: There is provided mechanisms for adapting beamformed transmission from a base station. A method is performed by a control node. The control node is configured to control the beamformed transmission. The method comprises obtaining a first piece of information indicative of distance to, and direction towards, a radio communication site relative the base station. The method comprises obtaining a second piece of information indicative of operating radio frequency band of the radio communication site. The method comprises adapting the beamformed transmission so as to keep emission from the base station in the direction towards the radio communication site that contributes within the operating radio frequency band of the radio communication site within a prescribed limit.
    Type: Application
    Filed: December 13, 2018
    Publication date: March 3, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ralf SCHUH, Jonas FRIDÉN, Christian BERGLJUNG, Torbjörn ELFSTRÖM, Johan THOREBÄCK
  • Patent number: 11228464
    Abstract: Suitable hopping patterns designed to alleviate degradations of SRSs are provided herein. When a UE (12, 14, 200) transmits multiple SRS within the same time resource (e.g., slot), the UE is configured with an SRS hopping pattern (including an SRS bandwidth) based on at least a UE configuration bandwidth. In one exemplary embodiment, a node (12, 14, 200), e.g., a UE (14, 200) or a network node (12, 200) of a wireless network (10), controls the SRS configurations for SRS transmissions by the UE (14, 200) via one or more resource blocks. The SRS configuration comprises a hopping pattern and a first (e.g., hopping) bandwidth associated with the SRS transmissions. The node (12, 14, 200) determines the first bandwidth, and determines a second (e.g., configuration) bandwidth associated with a configuration of the UE (14, 200).
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: January 18, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Imadur Rahman, Christian Bergljung, Stephen Grant, Muhammad Kazmi
  • Publication number: 20210360513
    Abstract: A UE transmits a radio access capability to a base station. The radio access capability is transmitted via an information element that comprises a bitmap in which a bit has a value that indicates, to the base station, support of a modification to at least one of a maximum power reduction or a spectrum emission requirement. According to embodiments, the base station manages the UE based on the supported modification. Such managing of the UE may include, for example, one or more of admission control, imposing scheduling restrictions, and imposing handover restrictions.
    Type: Application
    Filed: August 2, 2021
    Publication date: November 18, 2021
    Inventors: Christian Bergljung, Håkan Palm, Erika Tejedor, Anders Wallén
  • Patent number: 11159951
    Abstract: A first radio node, Node1, in a wireless communication network transmits a signal to a second radio node, Node2, under a constraint of spectrum flatness—meaning a maximum variation of power of the transmitted signal, within a transmission bandwidth. Spectrum flatness configurations may be determined by a network node and transmitted to Node1. Alternatively, Node1 may determine a spectrum flatness configuration and transmit it to a network node. In either case, Node1 adapts one or more coefficients of a transmission filter such that a transmission to Node2 will be in accordance with the obtained spectrum flatness configuration, and then transmits a signal to Node2 using the transmission filter with the adapted coefficients.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: October 26, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Muhammad Kazmi, Eric Nordström, Esther Sienkiewicz, Christian Bergljung, Imadur Rahman
  • Publication number: 20210314888
    Abstract: A method, network node and wireless device (WD) for adaptation of maximum operational timing difference (MOTD) for intra-band multicarrier operation based on number of independent timing management groups are disclosed. According to one aspect, a process in a network node includes determining a 5 maximum operational time difference parameter based on a number (N) of transmit timing management groups (TMG) configured at a WD. The process also includes operating to receive or transmit at least one of a: signal S1 between the WD and a first cell and signal S2 between the WD and a second cell based on the determined MOTD parameter. The process also includes using the determined MOTD parameter for one 10 or more operational tasks.
    Type: Application
    Filed: October 24, 2019
    Publication date: October 7, 2021
    Inventors: Imadur RAHMAN, Magnus SANDGREN, Muhammad KAZMI, Christian BERGLJUNG, Henning WIEMANN
  • Publication number: 20210314884
    Abstract: A method is performed by a wireless device. The method comprises determining a first configured maximum transmit power value (P_cmax1) for transmitting in a first radio access technology (RAT). The P_cmax1 is determined based on one or more transmissions of the first RAT. The method further comprises determining a second configured maximum transmit power value (P_cmax2) for transmitting in a second RAT. The P_cmax2 is determined based on transmissions of both the first RAT and the second RAT. The method further comprises performing a transmission in the first RAT at a power less than or equal to the P_cmax1. The method further comprises performing a transmission in the second RAT at a power less than or equal to the P_cmax2.
    Type: Application
    Filed: June 17, 2021
    Publication date: October 7, 2021
    Inventors: Ravikiran NORY, Christian BERGLJUNG, Daniel LARSSON
  • Patent number: 11109301
    Abstract: A UE transmits a radio access capability to a base station. The radio access capability is transmitted via an information element that comprises a bitmap in which a bit has a value that indicates, to the base station, support of a modification to at least one of a maximum power reduction or a spectrum emission requirement. According to embodiments, the base station manages the UE based on the supported modification. Such managing of the UE may include, for example, one or more of admission control, imposing scheduling restrictions, and imposing handover restrictions.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: August 31, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Christian Bergljung, Håkan Palm, Erika Tejedor, Anders Wallén
  • Publication number: 20210211989
    Abstract: According to some embodiments, a method for use in a user equipment (UE) operable to transmit a sounding reference signal (SRS) on a plurality of carriers comprises: obtaining an indication to perform SRS carrier-based switching for a carrier; adapting a parameter for uplink transmit power control in response to the obtained indication; and transmitting an uplink signal using the adapted parameter while meeting at least one predetermined uplink power control requirement. According to some embodiments, a method for use in a network node operable to receive a SRS on a plurality of carriers comprises: sending, to a UE, an indication to perform SRS carrier-based switching for a carrier; and receiving, from the UE, an uplink signal based on the parameter for uplink transmit power control adapted in response to the sent indication, wherein the uplink signal meets at least one uplink power control requirement.
    Type: Application
    Filed: March 25, 2021
    Publication date: July 8, 2021
    Inventors: Imadur Rahman, Iana Siomina, Muhammad Kazmi, Christian Bergljung
  • Publication number: 20210204227
    Abstract: Methods and apparatuses are disclosed for power headroom report (PHR) reporting determination for dual-connectivity. In one embodiment, a method in a wireless device is provided including operating in dual-connectivity with at least two different radio access technologies, RATs, the at least two different RATs including at least a first RAT and a second RAT; determining a first power headroom report, PHR, for the first RAT based at least in part on a WD transmission using the first RAT; determining a second PHR for the second RAT based at least in part on both the WD transmission using the first RAT and the WD transmission using the second RAT; and transmitting based on a received allocation information, the allocation information based at least in part on at least one of the determined first PHR and the determined second PHR.
    Type: Application
    Filed: August 8, 2019
    Publication date: July 1, 2021
    Inventors: Christian BERGLJUNG, Daniel CHEN LARSSON, Havish KOORAPATY, Ravikiran NORY
  • Patent number: 11044681
    Abstract: A method is performed by a wireless device. The method comprises determining a first configured maximum transmit power value (P_cmax1) for transmitting in a first radio access technology (RAT). The P_cmax1 is determined based on one or more transmissions of the first RAT. The method further comprises determining a second configured maximum transmit power value (P_cmax2) for transmitting in a second RAT. The P_cmax2 is determined based on transmissions of both the first RAT and the second RAT. The method further comprises performing a transmission in the first RAT at a power less than or equal to the P_cmax1. The method further comprises performing a transmission in the second RAT at a power less than or equal to the P_cmax2.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: June 22, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ravikiran Nory, Christian Bergljung, Daniel Larsson
  • Publication number: 20210184906
    Abstract: Systems and methods for determining a set of numerologies for performing multicarrier operation of a user equipment for operating signals on at least a first carrier in a first cell and a second carrier in a second cell are provided.
    Type: Application
    Filed: March 1, 2021
    Publication date: June 17, 2021
    Inventors: Muhammad Kazmi, Imadur Rahman, Christian Bergljung
  • Patent number: 10986582
    Abstract: According to some embodiments, a method for use in a user equipment (UE) operable to transmit a sounding reference signal (SRS) on a plurality of carriers comprises: obtaining an indication to perform SRS carrier-based switching for a carrier; adapting a parameter for uplink 5 transmit power control in response to the obtained indication; and transmitting an uplink signal using the adapted parameter while meeting at least one predetermined uplink power control requirement. According to some embodiments, a method for use in a network node operable to receive a SRS on a plurality of carriers comprises: sending, to a UE, an indication to perform SRS carrier-based switching for a carrier; and receiving, from the UE, an uplink signal based 0 on the parameter for uplink transmit power control adapted in response to the sent indication, wherein the uplink signal meets at least one uplink power control requirement.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: April 20, 2021
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Imadur Rahman, Iana Siomina, Muhammad Ali Kazmi, Christian Bergljung
  • Patent number: 10938609
    Abstract: Systems and methods for determining a set of numerologies—for performing multicarrier operation of a user equipment for operating signals on at least a first carrier in a first cell and a second carrier in a second cell are provided.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: March 2, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Muhammad Kazmi, Imadur Rahman, Christian Bergljung
  • Patent number: 10917264
    Abstract: Methods of operating a network device for a user equipment, UE, in a telecommunications network is provided. Methods include generating a transmission gap at an end of a first type of uplink, UL, transmission and scheduling a second type of UL transmission that corresponds to the transmission gap. Generating the transmission gap includes sending, to the UE, a radio resource control that configures a potential sounding reference signal, SRS, transmission that generates the transmission gap.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: February 9, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Christian Bergljung, Havish Koorapaty, Daniel Chen Larsson, Ravikiran Nory
  • Publication number: 20210029551
    Abstract: A first radio node, Node1, in a wireless communication network transmits a signal to a second radio node, Node2, under a constraint of spectrum flatness—meaning a maximum variation of power of the transmitted signal, within a transmission bandwidth. Spectrum flatness configurations may be determined by a network node and transmitted to Node1. Alternatively, Node1 may determine a spectrum flatness configuration and transmit it to a network node. In either case, Node1 adapts one or more coefficients of a transmission filter such that a transmission to Node2 will be in accordance with the obtained spectrum flatness configuration, and then transmits a signal to Node2 using the transmission filter with the adapted coefficients.
    Type: Application
    Filed: March 19, 2019
    Publication date: January 28, 2021
    Inventors: Muhammad KAZMI, Eric NORDSTRÖM, Esther SIENKIEWICZ, Christian BERGLJUNG, Imadur RAHMAN
  • Publication number: 20210022141
    Abstract: Methods and apparatuses are disclosed for reducing image interference in uplink transmission. In one embodiment, a wireless device (WD) is configured to receive an indication of a resource allocation from the network node; determine an uplink center frequency based at least in part on a center frequency of a resource allocated by the received indication of the resource allocation; and transmit uplink information according to the determined uplink center frequency.
    Type: Application
    Filed: March 26, 2019
    Publication date: January 21, 2021
    Inventors: Chunhui ZHANG, Anders K. ERIKSSON, Anders WALLÉN, Johan BERGMAN, Gerardo Agni MEDINA ACOSTA, Christian BERGLJUNG
  • Patent number: 10893491
    Abstract: According to certain embodiments, a method by a wireless device is provided for determining a maximum output power. The method includes obtaining, by the wireless device, a first time resource for transmitting a first signal in ?a first cell on a first carrier and a second time resource for transmitting a second signal in a second cell on a second carrier. Based on the first time resource and the second time resource, the maximum output power is 10 determined. The first signal and the second signal are transmitted based on the determined maximum output power.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: January 12, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Muhammad Kazmi, Christian Bergljung, Christopher Callender, Dominique Everaere, Imadur Rahman, Laetitia Falconetti, Mårten Sundberg
  • Publication number: 20200413305
    Abstract: A method, system and apparatus for switching of a transmission between cell groups. According to one aspect of the disclosure, a network node is configured to provide a first cell on a first carrier and to communicate with a wireless device where the first cell is part of a first cell group is provided. The network node includes processing circuitry configured to: receive a transmission from a wireless device after a time period following a switching of a transmission from a second cell being part of a second cell group, the first cell group being different from the second cell group; and determine a timing value corresponding to the time period, the time value being associated at least in part with the second cell group.
    Type: Application
    Filed: November 28, 2018
    Publication date: December 31, 2020
    Inventors: Imadur RAHMAN, Christian BERGLJUNG, Muhammad KAZMI, Magnus LARSSON