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).

  • PUCCH STRUCTURE FOR MIXED NUMEROLOGY
    Publication number: 20210399860
    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: September 3, 2021
    Publication date: December 23, 2021
    Inventors: Robert BALDEMAIR, Erik DAHLMAN, Carola FARONIUS, Stefan PARKVALL
  • Technique for performing a random access procedure over a radio interface
    Patent number: 11206691
    Abstract: The invention relates to a technique for performing a random access procedure over a radio interface, for example between a mobile terminal and a radio base station of a mobile network. A method aspect of the invention comprises the steps of transmitting a synchronization request for synchronization information; receiving synchronization information in response to the synchronization request; and transmitting, based on at least one transmission parameter adjusted in accordance with the synchronization information, a resource request for data transmission resources.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: December 21, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Robert Baldemair, Maria Edvardsson, Erik Dahlman, Jacobus Cornelis Haartsen, Stefan Parkvall
  • Numerology indication for radio access networks
    Patent number: 11201718
    Abstract: There is disclosed a method of operating a network node in a radio access network. The method includes transmitting first numerology information indicating a first numerology for a carrier, the first numerology having a first subcarrier spacing and a first frequency reference. The method also includes transmitting a frequency shift indication indicating a second frequency reference for a second numerology for the same carrier, the frequency shift indication indicating the second frequency reference in relation to the first frequency reference. The disclosure also pertains to related methods and devices.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: December 14, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Robert Baldemair, Erik Dahlman, Asbjörn Grövlen, Stefan Parkvall
  • TIMING CONTROL FOR INTEGRATED ACCESS AND BACKHAUL (IAB) NODE TRANSMISSION
    Publication number: 20210385776
    Abstract: A method, system and apparatus are disclosed. In one or more embodiments, a network node configured to communicate with a wireless device (WD) is provided. The network node configured to, and/or including a radio interface and/or including processing circuitry configured to: receive information indicating a timing offset (T??), determine transmission timing for downlink transmission based on the timing offset (T??) and at least one estimated timing value, and perform downlink transmission based on the determine transmission timing.
    Type: Application
    Filed: September 27, 2019
    Publication date: December 9, 2021
    Inventors: Erik DAHLMAN, Boris DORTSCHY, Yezi HUANG, Per-Erik ERIKSSON
  • IAB Downlink Timing
    Publication number: 20210377885
    Abstract: There is disclosed a method of operating an Integrated Access and Backhaul (IAB) node (200, C, N3) in a radio access network, the IAB node (200, C, N3) being connected to a first parent IAB node (200, N1, P) via a first backhaul link having a first timing, and being connected to a second parent IAB node (200, N2, P) via a second backhaul link having a second timing, the IAB node (200, C, N3) providing a communication link for access or backhaul, the communication link having a communication timing based on the first timing and the second timing. The disclosure also pertains to related methods and devices.
    Type: Application
    Filed: January 29, 2019
    Publication date: December 2, 2021
    Inventors: Boris Dortschy, Robert Baldemair, Per-Erik Eriksson, Yezi Huang, Erik Dahlman
  • Random-access procedure
    Patent number: 11191102
    Abstract: A method in a network node for managing random-access procedures with a plurality of wireless devices. The method comprising transmitting an indication of a modulation format to one or more of the plurality of wireless devices to configure the modulation format for a random access message 3 transmission from the one or more wireless devices.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: November 30, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Henrik Sahlin, Robert Baldemair, Erik Dahlman, Stefan Parkvall
  • PUCCH structure for mixed numerology
    Patent number: 11190325
    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: Grant
    Filed: October 29, 2019
    Date of Patent: November 30, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Robert Baldemair, Erik Dahlman, Carola Faronius, Stefan Parkvall
  • Determination of SSB/RMSI Periodicity for IAB Node
    Publication number: 20210368425
    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: Application
    Filed: October 25, 2019
    Publication date: November 25, 2021
    Inventors: Lei BAO, Erik Dahlman, Zhipeng Lin
  • MULTIPLEXING OF IAB-NODE LINKS
    Publication number: 20210359827
    Abstract: A method, system and apparatus in a network node configured as an integrated access backhaul, IAB, node to communicate with a parent node and a child node and or a wireless device (WD) is provided. According to one aspect, the process includes, if a collision occurs between a scheduling grant for an uplink parent backhaul and an already issued scheduling grant for an uplink child backhaul, then one of: transmitting on an uplink parent backhaul and ignore possible uplink transmission from the child node and/or the WD; and ignoring a scheduling grant from the parent node and not transmit on an uplink parent backhaul.
    Type: Application
    Filed: September 27, 2019
    Publication date: November 18, 2021
    Inventors: Yezi HUANG, Erik DAHLMAN, Boris DORTSCHY, Per-Erik ERIKSSON
  • Information on reference signal structure for neighboring cell measurements
    Patent number: 11177921
    Abstract: A mobile terminal camps in a first cell associated with a first reference signal with a first physical structure that relates to a first Time Division Duplex (TDD) allocation of sub-frames for uplink and downlink transmission. The first reference signal is carried by the downlink sub-frames. The mobile terminal detects a broadcast indication of a second physical structure for carrying a second reference signal that relates to a second allocation of sub-frames for uplink and downlink transmissions that differs from the first allocation. The downlink sub-frames according to the second allocation carry the second reference signal. The mobile terminal measures the second reference signal of a neighbor cell as carried by the second physical structure.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: November 16, 2021
    Assignee: Optis Wireless Technology, LLC
    Inventors: Stefan Parkvall, David Astely, Erik Dahlman
  • SIGNALING OF IDENTITY FOR RADIO ACCESS NETWORKS
    Publication number: 20210345261
    Abstract: There is disclosed a method of operating a network node in a radio access network, the method including transmitting an identity indication, the identity indication indicating an identity associated to the network node representing an identity out of a set of identities larger than the set of physical cell identities representable by synchronisation signaling. The disclosure also pertains to related devices and methods.
    Type: Application
    Filed: August 5, 2018
    Publication date: November 4, 2021
    Inventors: Robert BALDEMAIR, Stefan PARKVALL, Erik DAHLMAN, Sorour FALAHATI
  • CELL IDENTIFICATION FOR RADIO ACCESS NETWORKS
    Publication number: 20210337488
    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: Application
    Filed: August 6, 2018
    Publication date: October 28, 2021
    Inventors: Robert BALDEMAIR, Stefan Parkvall, Erik DAHLMAN, Sorour FALAHATI
  • Support for frequency-overlapping carriers
    Patent number: 11159949
    Abstract: A method and network node for providing support for frequency-overlapping carriers among a first radio access technology, RAT, and a second RAT is provided. Second RAT information to signal to the first RAT wireless device is determined. The second RAT information configured to allow the first RAT wireless device to determine, at a resource element level, resources reserved for second RAT transmissions. The second RAT information is caused to be communicated to the first RAT wireless device.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: October 26, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Robert Baldemair, Johan Bergman, Erik Dahlman, Olof Liberg, Stefan Parkvall, Yi-Pin Eric Wang
  • Prefixing of OFDM symbols to support variable subframe length
    Patent number: 11153138
    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: September 25, 2020
    Date of Patent: October 19, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefan Parkvall, Erik Dahlman, Asbjörn Grövlen
  • Uplink Power Control for Power Limited Terminals
    Publication number: 20210314875
    Abstract: Transmit power control methods and apparatus are disclosed. In several embodiments, a mobile terminal is configured to effectively ignore “UP” transmit power control commands in the event that the mobile terminal is operating in a power-limited state. In an exemplary method for controlling transmit power at a mobile terminal, a plurality of transmit power control commands are received. An accumulated power control value is adjusted in response to each transmit power control command that directs a negative adjustment in transmit power. However, the accumulated power control value is adjusted in response to a transmit power control command that directs a positive adjustment in transmit power only if the mobile terminal is not in a power-limited state. Transmit power settings for each transmission are calculated based on the accumulated power control value and the one or more radio link parameters.
    Type: Application
    Filed: June 17, 2021
    Publication date: October 7, 2021
    Inventors: Eva Englund, Erik Dahlman, Anders Furuskär, Ylva Jading, Kristina Jersenius, Stefan Parkvall
  • ATMOSPHERIC CHANNEL-DRIVEN INTERFERENCE HANDLING
    Publication number: 20210307020
    Abstract: There is disclosed a method of operating a network node in a radio access network. The method includes operating on a carrier based on a received BS-to-BS interference indication. The disclosure also pertains to related devices and methods.
    Type: Application
    Filed: August 5, 2018
    Publication date: September 30, 2021
    Inventors: Robert BALDEMAIR, Stefan PARKVALL, Erik DAHLMAN, Sorour FALAHATI
  • HANDLING BS-TO-BS INTERFERENCE IN RADIO ACCESS NETWORKS
    Publication number: 20210307024
    Abstract: There is disclosed a method of operating a grouping node connected to a radio access network. The method includes grouping one or more radio nodes of the radio access network into one or more groups, wherein to each group there is associated one identity and/or a schedule of transmitting signaling an identity. The disclosure also pertains to related devices and methods.
    Type: Application
    Filed: August 5, 2018
    Publication date: September 30, 2021
    Inventors: Robert BALDEMAIR, Stefan PARKVALL, Erik DAHLMAN, Sorour FALAHATI
  • FIRST NODE, FOURTH NODE AND METHODS PERFORMED THEREBY FOR HANDLING ACCESS TO A COMMUNICATIONS NETWORK IN A MULTI-HOP DEPLOYMENT
    Publication number: 20210306931
    Abstract: A method, performed by a first node (111). The method is for handling access to a communications network (100) in a multi-hop deployment. The first node receives (305), from a fourth node (114), information. The information indicates a recommendation on which node within radio range to connect to, out of a plurality of candidate parent nodes (120). The plurality comprises a first set (121) and a second set (122) of candidate parent nodes. A third node (113) is enabled to be a donor node in the first set (121). A sixth node (116) is enabled to be a donor node in the second set (122). The first node also determines (307), out of the plurality, a second node (112) to establish a connection with. The determining (307) is based on the received information. The first node then initiates (308) establishment of a connection or re-connection to the network via the second node (112), as first-hop.
    Type: Application
    Filed: September 10, 2019
    Publication date: September 30, 2021
    Inventors: Yezi HUANG, Boris DORTSCHY, Erik DAHLMAN, Per-Erik ERIKSSON
  • Handling of BS-to-BS Interference in Radio Access Networks
    Publication number: 20210297871
    Abstract: There is disclosed a method of operating a network node (100) in a radio access network, the network node (100) being adapted for reception beamforming, the method comprising switching from a first set of reception beams to a second set of reception beams based on a received BS-to-BS interference indication. The disclosure also pertains to related devices and methods.
    Type: Application
    Filed: June 25, 2019
    Publication date: September 23, 2021
    Inventors: Axel Guthmann, Robert Baldemair, Erik Dahlman, Sorour Falahati, Stefan Parkvall
  • LOCALIZED AND DISTRIBUTED TRANSMISSION
    Publication number: 20210298022
    Abstract: The available transmission resources on a downlink-shared channel are divided into resource blocks, each resource block comprising a predetermined number of sub-carriers during a predetermined time period. The resource blocks are subdivided into localized resource blocks and distributed resource blocks. A user requiring sufficient resources can be allocated a plurality of said localized resource blocks. A user who would require only a small number of said localized resource blocks can instead be allocated subunits of a plurality of said distributed resource blocks.
    Type: Application
    Filed: June 1, 2021
    Publication date: September 23, 2021
    Inventors: Stefan Parkvall, Lei Wan, Erik Dahlman