Patents by Inventor Erik Dahlman

Erik Dahlman 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).

  • Methods and arrangements in a telecommunications network
    Patent number: 11659511
    Abstract: The present invention relates to methods and arrangements in a base station and a user equipment for determining an uplink transmission timing correction for communication in a telecommunication system in which aggregation of component carriers is applied. The base station receives a signal from the user equipment on an uplink (UL) component carrier and measures the arrival time of the signal. A timing correction of the UL transmission timing based on the arrival time of the signal is determined. Thereupon the base station determines for which of the uplink component carriers used by the user equipment the timing correction is valid. The timing correction and the validity information is sent to the user equipment. The user equipment adjusts the UL transmission timing for each UL component carrier the timing correction is valid for.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: May 23, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Robert Baldemair, David Astely, Erik Dahlman, Ylva Jading
  • PUCCH STRUCTURE FOR MIXED NUMEROLOGY
    Publication number: 20230155792
    Abstract: There is disclosed a user equipment for a Radio Access Network. The user equipment is adapted for communicating utilizing a first transmission timing structure having a first number of symbols, and for communicating utilizing a second transmission timing structure comprising a second number of symbols. The user equipment further is adapted for receiving first signaling based on the first transmission timing structure and for transmitting acknowledgement signaling pertaining to the first signaling based on the second transmission timing structure, wherein the user equipment is adapted to start transmitting the acknowledgement signaling at a starting symbol of the second transmission timing structure, the starting symbol being determined based on a configuration of the user equipment.
    Type: Application
    Filed: January 13, 2023
    Publication date: May 18, 2023
    Inventors: Robert BALDEMAIR, Erik DAHLMAN, Carola FARONIUS, Stefan PARKVALL
  • Network architecture, methods, and devices for a wireless communications network
    Patent number: 11652562
    Abstract: Methods and apparatus in a fifth-generation wireless communications, including an example method, in a wireless device, that includes receiving a downlink signal comprising an uplink access configuration index, using the uplink access configuration index to identify an uplink access configuration from among a predetermined plurality of uplink access configurations, and transmitting to the wireless communications network according to the identified uplink access configuration. The example method further includes, in the same wireless device, receiving, in a first subframe, a first Orthogonal Frequency-Division Multiplexing (OFDM) transmission formatted according to a first numerology and receiving, in a second subframe, a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology. Variants of this method, corresponding apparatuses, and corresponding network-side methods and apparatuses are also disclosed.
    Type: Grant
    Filed: December 31, 2020
    Date of Patent: May 16, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stefan Parkvall, Janne Peisa, Gunnar Mildh, Robert Baldemair, Stefan Wager, Jonas Kronander, Karl Werner, Richard Abrahamsson, Ismet Aktas, Peter Alriksson, Junaid Ansari, Shehzad Ali Ashraf, Henrik Asplund, Fredrik Athley, Håkan Axelsson, Joakim Axmon, Johan Axnäs, Kumar Balachandran, Gunnar Bark, Jan-Erik Berg, Andreas Bergström, Häkan Björkegren, Nadia Brahmi, Cagatay Capar, Anders Carlsson, Andreas Cedergren, Mikael Coldrey, Icaro L. J. da Silva, Erik Dahlman, Ali el Essaili, Ulrika Engström, Mårten Ericson, Erik Eriksson, Mikael Fallgren, Rui Fan, Gabor Fodor, Pål Frenger, Jonas Fridén, Jonas Fröberg Olsson, Anders Furuskär, Johan Furuskog, Virgile Garcia, Ather Gattami, Fredrik Gunnarsson, Ulf Gustavsson, Bo Hagerman, Fredrik Harrysson, Ning He, Martin Hessler, Kimmo Hiltunen, Songnam Hong, Dennis Hui, Jörg Huschke, Tim Irnich, Sven Jacobsson, Niklas Jaldén, Simon Järmyr, Zhiyuan Jiang, Niklas Johansson, Martin Johansson, Du Ho Kang, Eleftherios Karipidis, Patrik Karlsson, Ali S. Khayrallah, Caner Kilinc, Göran N. Klang, Sara Landström, Christina Larsson, Gen Li, Lars Lindbom, Robert Lindgren, Bengt Lindoff, Fredrik Lindqvist, Jinhua Liu, Thorsten Lohmar, Qianxi Lu, Lars Manholm, Ivana Maric, Jonas Medbo, Qingyu Miao, Reza Moosavi, Walter Muller, Elena Myhre, Karl Norrman, Bengt-Erik Olsson, Torgny Palenius, Sven Petersson, Jose Luis Pradas, Mikael Prytz, Olav Queseth, Pradeepa Ramachandra, Edgar Ramos, Andres Reial, Thomas Rimhagen, Emil Ringh, Patrik Rugeland, Johan Rune, Joachim Sachs, Henrik Sahlin, Vidit Saxena, Nima Seifi, Yngve Selén, Eliane Semaan, Sachin Sharma, Cong Shi, Johan Sköld, Magnus Stattin, Anders Stjernman, Dennis Sundman, Lars Sundström, Miurel Isabel Tercero Vargas, Claes Tidestav, Sibel Tombaz, Johan Torsner, Hugo Tullberg, Jari Vikberg, Peter von Wrycza, Thomas Walldeen, Pontus Wallentin, Hai Wang, Ke Wang Helmersson, Jianfeng Wang, Yi-Pin Eric Wang, Niclas Wiberg, Emma Wittenmark, Osman Nuri Can Yilmaz, Ali Zaidi, Zhan Zhang, Zhang Zhang, Yanli Zheng
  • Transient protection interval
    Patent number: 11646846
    Abstract: There is disclosed a method of operating a user equipment in a radio access network. The method comprises transmitting, during a transmission period, first signaling having a first set of transmission characteristics, and second signaling having second set of transmission characteristics, wherein the first set differs from the second set, wherein transmitting comprises including a transient protection interval in time domain between the first signaling and the second signaling. The disclosure also pertains to related devices and methods.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: May 9, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Robert Baldemair, Daniel Larsson, Erik Dahlman, Stefan Parkvall
  • Channel Sounding Using Multiple Sounding Configurations
    Publication number: 20230139305
    Abstract: To configure uplink sounding transmissions by mobile terminals in a wireless communication network, sets of configuration parameters for uplink sounding signal transmissions are determined for a given mobile terminal. Each of the sets of configuration parameters comprising frequency-domain and/or time-domain parameters. The sets of configuration parameters are transmitted to the mobile terminal, thereby enabling the mobile terminal to generate different sounding signals used by the wireless communication network to estimate different properties associated with at least one of uplink signals and uplink channels.
    Type: Application
    Filed: December 22, 2022
    Publication date: May 4, 2023
    Inventors: Erik Dahlman, Ylva Jading, Stefan Parkvall
  • FREQUENCY DOMAIN RESOURCE CONFIGURATION IN IAB
    Publication number: 20230134743
    Abstract: Systems and methods are disclosed herein for frequency domain resource configuration in an Integrated Access and Backhaul (IAB) node. In one embodiment, a method performed by an IAB node configured to operate in a spectrum band comprises receiving a configuration message(s) related to the spectrum band comprising information that defines two or more modes of operation of a distributed unit (DU) of the IAB node that are allowed for two or more subsets of a plurality of subcarriers within the spectrum band of the IAB node, respectively. The method further comprises allocating at least one of the subsets of the plurality of subcarriers within the spectrum band for performing an operation based on a mode of operation of the IAB node and the information comprised in the configuration message(s) and performing the operation on the allocated at least one of the subsets of the plurality of subcarriers.
    Type: Application
    Filed: April 6, 2021
    Publication date: May 4, 2023
    Inventors: Magnus Åström, Erik Dahlman, Boris Dortschy, Lei Bao, Behrooz Makki
  • ALIGNING DU/MT TRANSMISSION TIMING
    Publication number: 20230130847
    Abstract: A method, system and apparatus are disclosed for aligning Distributed Unit/Mobile Termination (DU/MT) transmission timing. In one embodiment, a method in a network node includes adjusting a first transmission timing to align with a second transmission timing, the first transmission timing comprising one of a Distributed Unit, DU, and a Mobile Terminated Unit, MT, transmission timing at the network node and the second transmission timing comprising another one of the DU and the MT transmission timing at the network node. In another embodiment, a method in a network node includes receiving an MT transmission based at least in part on an adjustment of a first transmission timing to align with a second transmission timing.
    Type: Application
    Filed: April 8, 2021
    Publication date: April 27, 2023
    Inventors: Erik DAHLMAN, Magnus ÅSTRÖM, Boris DORTSCHY, Lei BAO, Behrooz MAKKI
  • Methods and Arrangements in a Telecommunications Network
    Publication number: 20230120647
    Abstract: The present invention relates to methods and arrangements in a base station and a user equipment for determining an uplink transmission timing correction for communication in a telecommunication system which aggregation of component carriers is applied. The base station receives a signal from the user equipment on an uplink (UL) component carrier and measures the arrival time of the signal. A timing correction of the UL transmission timing based on the arrival time of the signal is determined. Thereupon the base station determines for which of the uplink component carriers used by the user equipment the timing correction is valid. The timing correction and the validity information is sent to the user equipment. The user equipment adjusts the UL transmission timing for each UL component carrier the timing correction is valid for.
    Type: Application
    Filed: December 19, 2022
    Publication date: April 20, 2023
    Inventors: Robert Baldemair, David Astely, Erik Dahlman, Ylva Jading
  • Network Architecture, Methods, and Devices for a Wireless Communications Network
    Publication number: 20230109947
    Abstract: Methods and apparatus in a fifth-generation wireless communications network, including an example method, in a wireless device, that includes determining a reporting quality threshold for a parameter related to channel state information (CSI); performing a measurement for each of a plurality of beams from a first predetermined set of beams for evaluation; evaluating the measurement for each of the plurality of beams against the reporting quality threshold; discontinuing the performing and evaluating of measurements in response to determining that the reporting quality threshold is met for one of the beams, such that one or more beams in the first predetermined set of beams are not measured and evaluated; and reporting, to the wireless communications network, CSI for the one of the beams.
    Type: Application
    Filed: June 8, 2022
    Publication date: April 13, 2023
    Inventors: Stefan Parkvall, Janne Peisa, Gunnar Mildh, Robert Baldemair, Stefan Wager, Jonas Kronander, Karl Werner, Richard Abrahamsson, Ismet Aktas, Peter Alriksson, Junaid Ansari, Shehzad Ali Ashraf, Henrik Asplund, Fredrik Athley, Håkan Axelsson, Joakim Axmon, Johan Axnäs, Kumar Balachandran, Gunnar Bark, Jan-Erik Berg, Andreas Bergström, Håkan Björkegren, Nadia Brahmi, Cagatay Capar, Anders Carlsson, Andreas Cedergren, Mikael Coldrey, Icaro L. J. da Silva, Erik Dahlman, Ali El Essaili, Ulrika Engström, Mårten Ericson, Erik Eriksson, Mikael Fallgren, Rui Fan, Gabor Fodor, Pål Frenger, Jonas Fridén, Jonas Fröberg Olsson, Anders Furuskär, Johan Furuskog, Virgile Garcia, Ather Gattami, Fredrik Gunnarsson, Ulf Gustavsson, Bo Hagerman, Fredrik Harrysson, Ning He, Martin Hessler, Kimmo Hiltunen, Songnam Hong, Dennis Hui, Jörg Huschke, Tim Irnich, Sven Jacobsson, Niklas Jaldén, Simon Järmyr, Zhiyuan Jiang, Martin Johansson, Niklas Johansson, Du Ho Kang, Eleftherios Karipidis, Patrik Karlsson, Ali S. Khayrallah, Caner Kilinc, Göran N. Klang, Sara Landström, Christina Larsson, Gen Li, Bo Lincoln, Lars Lindbom, Robert Lindgren, Bengt Lindoff, Fredrik Lindqvist, Jinhua Liu, Thorsten Lohmar, Qianxi Lu, Lars Manholm, Ivana Maric, Jonas Medbo, Qingyu Miao, Reza Moosavi, Walter Müller, Elena Myhre, Johan Nilsson, Karl Norrman, Bengt-Erik Olsson, Torgny Palenius, Sven Petersson, Jose Luis Pradas, Mikael Prytz, Olav Queseth, Pradeepa Ramachandra, Edgar Ramos, Andres Reial, Thomas Rimhagen, Emil Ringh, Patrik Rugeland, Johan Rune, Joachim Sachs, Henrik Sahlin, Vidit Saxena, Nima Seifi, Yngve Selén, Eliane Semaan, Sachin Sharma, Cong Shi, Johan Sköld, Magnus Stattin, Anders Stjernman, Dennis Sundman, Lars Sundström, Miurel Isabel Tercero Vargas, Claes Tidestav, Sibel Tombaz, Johan Torsner, Hugo Tullberg, Jari Vikberg, Peter von Wrycza, Thomas Walldeen, Anders Wallén, Pontus Wallentin, Hai Wang, Ke Wang Helmersson, Jianfeng Wang, Yi-Pin Eric Wang, Niclas Wiberg, Emma Wittenmark, Osman Nuri Can Yilmaz, Ali Zaidi, Zhan Zhang, Zhang Zhang, Yanli Zheng
  • Cell identification for radio access networks
    Patent number: 11617144
    Abstract: There is disclosed a method of operating a network node in a radio access network. The method includes determining an identity associated to a second network node based on received SS/PBCH block transmission received from the second network node and based on a determined time shift of the SS/PBCH block transmission relative to a slot structure. The disclosure also pertains to related devices and methods.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: March 28, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Robert Baldemair, Stefan Parkvall, Erik Dahlman, Sorour Falahati
  • Prefixing of OFDM symbols to support variable subframe length
    Patent number: 11569950
    Abstract: The present disclosure relates to a first radio node configured for orthogonal frequency division multiplexing (OFDM), comprising a receiver, a transmitter, a processor and a memory storing instructions executable by the processor for causing the transmitter in a first mode of operation with a first subcarrier spacing f1: to transmit a sequence of prefixed OFDM symbols, and in a second mode of operation with a second subcarrier spacing f2: to transmit a sequence of prefixed OFDM symbols, wherein the sequence of transmitted OFDM symbols is aligned with a predefined repeating radio frame, which is common to both the first and second modes of operation, or with an integer multiple of the predefined repeating radio frame; and the first and second subcarrier spacings are related by an integer factor, f1/f2=p or f1/f2=1/p, with p?1 integer.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: January 31, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefan Parkvall, Erik Dahlman, Asbjörn Grövlen
  • Determination of SSB/RMSI periodicity for IAB node
    Patent number: 11564152
    Abstract: An IAB node performs a method for determining a periodicity of a SSB and/or a RMSI for use in an IAB backhaul link. The method may comprise one or more of: using a predetermined periodicity value; determining a periodicity value based on at least one different parameter; receiving a signaling message indicating a periodicity value and using the indicated periodicity value for the IAB backhaul link; and selecting a periodicity value from a plurality of permitted periodicity values.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: January 24, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Lei Bao, Erik Dahlman, Zhipeng Lin
  • Demodulation reference signaling in LTE/NR coexistence
    Patent number: 11558163
    Abstract: There is disclosed a method of operating a network node, the network node operating according to a first radio access technology, RAT, the method including transmitting data in a transmission resource structure, the transmission resource structure including a first set of resource elements for data and a second set of resource elements for demodulation reference signals, DMRS, wherein the second set represents at least one pattern in frequency domain, wherein the transmission resource structure is scheduled based on a coexistence indication, the coexistence indication indicating the presence of cell-specific reference signals associated to a second RAT. The disclosure also pertains to related methods and devices.
    Type: Grant
    Filed: June 2, 2018
    Date of Patent: January 17, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Robert Baldemair, Håkan Björkegren, Erik Dahlman, Anders Furuskär, Franz Heiser, Karl Werner
  • HARQ codebook structure
    Patent number: 11539465
    Abstract: There is disclosed a method of operating a user equipment in a radio access network. The method includes transmitting acknowledgement information reporting on subject transmissions based on a HARQ codebook. The HARQ codebook indicates a bit pattern of the acknowledgement information. The bit pattern has a plurality of subpatterns, each subpattern being associated to a different subdivision of a reception time interval to which the acknowledgement information pertains. Each subpattern includes a predetermined number of bits of acknowledgement information associated to subject transmissions of the subdivision. There are also disclosed related methods and devices.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: December 27, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Sorour Falahati, Robert Baldemair, Daniel Chen Larsson, Erik Dahlman, Stefan Parkvall
  • Channel sounding using multiple sounding configurations
    Patent number: 11539564
    Abstract: A base station determines multiple different sets of configuration parameters for uplink sounding signal transmissions for a mobile terminal. Each of the multiple different sets of configuration parameters comprises frequency-domain and time-domain parameters. Each of the time-domain parameters indicates a time offset (in number of subframes) of a sounding signal, and a period (in number of subframes) of the sounding signal. The base station transmits information representing the multiple different sets of configuration parameters to the mobile terminal. The mobile terminal receives the information from the base station and generates different sounding signals based on the multiple different sets of configuration parameters.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: December 27, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Erik Dahlman, Ylva Jading, Stefan Parkvall
  • RANDOM ACCESS CHANNEL (RACH) PROCESS FOR INTEGRATED ACCESS AND BACKHAUL (IAB) NETWORKS
    Publication number: 20220408490
    Abstract: Performing random access process. In one aspect, there is a method performed by a network function. The method comprises the network function generating system information and the network function broadcasting the system information. The system information comprises i) first power information for use by at least a first set of communication devices and a second set of communication devices in determining a transmit power, and ii) second power information for use by the first set of communication devices, but not the second set of communication devices, in determining the transmit power.
    Type: Application
    Filed: October 29, 2020
    Publication date: December 22, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Behrooz MAKKI, Erik DAHLMAN
  • TIMING OF COMPONENT CARRIERS IN MULTI-CARRIER WIRELESS NETWORKS
    Publication number: 20220394591
    Abstract: Mechanisms for efficient transmission of large amount of download data from a base station to a user equipment in a multi-carrier that minimizes power consumption on the user equipment are described. When multiple component carriers are to be used to transmit the download data, the base station informs the user equipment. The base station transmits on the anchor carriers without wait after informing the user equipment and transmits on the non-anchor carriers after waiting a predetermined delay. The predetermined delay provides time to allow the user equipment to activate the receiving resources and be ready to receive the download data over the non-anchor carriers. In this manner, the user equipment can be in a power conservation mode and activate the receiver resources only when needed.
    Type: Application
    Filed: August 16, 2022
    Publication date: December 8, 2022
    Inventors: Bengt Lindoff, Erik Dahlman, Stefan Parkvall
  • METHODS FOR DETERMINING A MUTING PATTERN OF SSB TRANSMISSION FOR IAB NODE MEASUREMENT
    Publication number: 20220346044
    Abstract: Methods and apparatuses are disclosed for determining a muting pattern of a synchronization signal block (SSB) transmission for Integrated Access and Backhaul (IAB) node measurement. In one embodiment, a network node is configured to indicate a first muting pattern, the indication of the first muting pattern indicating at least one first synchronization signal block, SSB, transmission opportunity associated with SSB transmission configuration, STC, that is mutable by an Integrated Access Backhaul, IAB, node. In one embodiment, a network node is configured to determine a first muting pattern, the first muting pattern indicating at least one SSB transmission opportunity associated with a STC that is mutable by the network node; and mute the at least one first SSB transmission opportunity according to the determined first muting pattern.
    Type: Application
    Filed: October 5, 2020
    Publication date: October 27, 2022
    Inventors: Erik DAHLMAN, Yezi HUANG, Boris DORTSCHY, Lei BAO
  • Synchronisation Signaling for Integrated Access and Backhaul Nodes
    Publication number: 20220346046
    Abstract: There is disclosed a method of operating an Integrated Access and Backhaul (IAB) node (200, C, N3) in a wireless communication network, the IAB node being in a communication link with a second IAB node using a signaling beam, the IAB node further being scheduled to perform beam sweeping with a plurality of synchronisation beams, one of the synchronisation beams corresponding to the signaling beam; wherein a synchronisation beam is scheduled to carry synchronisation signaling; and wherein the method comprises performing beam sweeping such that the synchronisation beam corresponding to the signaling beam carries information signaling replacing the synchronisation signaling at least in part. The disclosure also pertains to related methods and devices.
    Type: Application
    Filed: October 4, 2019
    Publication date: October 27, 2022
    Inventors: Yezi Huang, Erik Dahlman, Boris Dortschy, Lei Bao
  • PERSISTENT INDICATION OF ACKNOWLEDGEMENT RESOURCES
    Publication number: 20220329365
    Abstract: A user equipment is configured with at least two collections of uplink resources to be used for transmitting control information to a communication network. The UE receives an assignment of radio resources to be used for receiving a downlink transmission from a base station of the communication network. The UE receives an acknowledgement resource indication, ARI, indicating one of the configured collections of uplink resources to be used for transmitting control information associated with the DL transmission. Further, the UE transmits the control information to the base station on at least a subset of the indicated collection of UL resources. In example embodiments, the indicated collection of uplink resources comprises a plurality of selectable uplink resource sets. The control information is transmitted on one of the uplink resource sets which corresponds to an operational state of the communication network.
    Type: Application
    Filed: June 23, 2022
    Publication date: October 13, 2022
    Inventors: Stefan PARKVALL, Robert BALDEMAIR, Erik DAHLMAN, Sorour FALAHATI, Daniel LARSSON