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).

  • Network architecture, methods, and devices for a wireless communications network
    Patent number: 10367677
    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: Grant
    Filed: May 13, 2016
    Date of Patent: July 30, 2019
    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, 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, Rul Fan, Gabor Fodor, Pål Frenger, Jonas Fridén, Jonas Fröberg Olsson, Anders Furuskár, 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, Yanil Zheng
  • RESOURCE SIGNALING FOR PUCCH
    Publication number: 20190230642
    Abstract: There is disclosed a User Equipment, UE, for a Radio Access Network. The UE is adapted for transmitting acknowledgement signaling pertaining to downlink data, the downlink data having one or more downlink data elements. The acknowledgement signaling has an uplink signaling format having one or more acknowledgement substructures, each of the substructures carrying acknowledgement information pertaining to a downlink data element. Each of the acknowledgment substructures is mapped to a different of the downlink data elements based on at least one acknowledgement position indication provided in downlink control signaling received by the UE. The disclosure also pertains to related devices and methods.
    Type: Application
    Filed: February 13, 2017
    Publication date: July 25, 2019
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Robert BALDEMAIR, Erik DAHLMAN, Sorour FALAHATI, Stefan PARKVALL
  • Method and Apparatus for Configuring Sounding Signals in a Wireless Communication Network
    Publication number: 20190230637
    Abstract: The teachings presented herein propose a separation between the configuration of a sounding signal, and the initialization of the sounding signal. In other words, in at least one example embodiment proposed herein, a base station or other controlling entity sends, to a mobile station, an explicit or implicit indication that causes the mobile station to transmit a sounding signal according to sounding signal configuration parameters that at least a portion of which were previously and separately sent to the mobile station.
    Type: Application
    Filed: April 1, 2019
    Publication date: July 25, 2019
    Inventors: Erik Dahlman, Ylva Jading, Stefan Parkvall
  • Methods and nodes for soft cell uplink prioritization
    Patent number: 10355846
    Abstract: The invention relates to a method in a wireless device for mapping a logical channel to one of a first and a second link. The first link is maintained to a first radio network node and the second link is maintained to a second radio network node. The method comprises obtaining (910) information indicating to which of the first and the second links one or more of at least one logical channel is mapped. The method also comprises selecting (920) a logical channel among the at least one logical channel, and mapping (930) the selected logical channel to one of the first and the second links based on the obtained information. The invention also relates to a corresponding method in the first radio network node.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: July 16, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stefan Parkvall, Erik Dahlman, Bengt Lindoff, Robert Baldemair
  • Methods and Arrangements in a Telecommunications Network
    Publication number: 20190215793
    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: Application
    Filed: March 19, 2019
    Publication date: July 11, 2019
    Inventors: Robert Baldemair, David Astely, Erik Dahlman, Ylva Jading
  • Channel Sounding Using Multiple Sounding Configurations
    Publication number: 20190215210
    Abstract: More than one set of sounding signal configuration parameters are determined for the same mobile terminal. The mobile terminal uses the sets of configuration parameters to generate different sounding reference signals which can be used for different purposes such as estimating timing and channel quality. In one embodiment, a method of configuring uplink sounding transmissions by mobile terminals in a wireless communication network is characterized by determining different sets of configuration parameters for sounding signal transmissions for a given mobile terminal. The different sets of configuration parameters are transmitted to the mobile terminal, allowing the mobile terminal to generate different sounding signals for different uses by the wireless communication network.
    Type: Application
    Filed: March 15, 2019
    Publication date: July 11, 2019
    Inventors: Erik Dahlman, Ylva Jading, Stefan Parkvall
  • RESOURCE SIGNALING FOR PUCCH
    Publication number: 20190208518
    Abstract: There is disclosed a User Equipment, UE, for a Radio Access Network. The UE is adapted for transmitting acknowledgement signaling pertaining to downlink data, the downlink data having one or more downlink data elements. The acknowledgement signaling has an uplink signaling format including one or more acknowledgement substructures, each of the substructures carrying acknowledgement information pertaining to a downlink data element. Each of the acknowledgment substructures is mapped to a different of the downlink data elements based on at least one acknowledgement position indication provided in downlink control signaling received by the UE. The disclosure also pertains to related devices and methods.
    Type: Application
    Filed: March 6, 2019
    Publication date: July 4, 2019
    Inventors: Robert BALDEMAIR, Erik DAHLMAN, Sorour FALAHATI, Stefan PARKVALL
  • LOCALIZED AND DISTRIBUTED TRANSMISSION
    Publication number: 20190190667
    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: February 22, 2019
    Publication date: June 20, 2019
    Inventors: Stefan Parkvall, Lei Wan, Erik Dahlman
  • Methods and arrangements in a telecommunications network
    Patent number: 10285150
    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: November 4, 2014
    Date of Patent: May 7, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Robert Baldemair, David Astely, Erik Dahlman, Ylva Jading
  • Transmission of system information on a downlink shared channel
    Patent number: 10285115
    Abstract: In one embodiment, a method of transmitting system information on a downlink shared channel structured as successive subframes includes transmitting system information in regularly occurring time windows, each time window spanning some number of successive subframes. The method further includes indicating to receiving user equipment which subframes within a given time window carry system information. The method and variations of it are applied, for example, to the transmission of dynamic system information on the downlink shared channel or other downlink channel in a 3GPP E-UTRA wireless communication network.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: May 7, 2019
    Inventors: Erik Dahlman, Vera Vukajlovic Kenehan
  • Method and apparatus for configuring sounding signals in a wireless communication network
    Patent number: 10264569
    Abstract: The teachings presented herein propose a separation between the configuration of a sounding signal, and the initialization of the sounding signal. In other words, in at least one example embodiment proposed herein, a base station or other controlling entity sends, to a mobile station, an explicit or implicit indication that causes the mobile station to transmit a sounding signal according to sounding signal configuration parameters that at least a portion of which were previously and separately sent to the mobile station.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: April 16, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Erik Dahlman, Ylva Jading, Stefan Parkvall
  • Channel sounding using multiple sounding configurations
    Patent number: 10263820
    Abstract: More than one set of sounding signal configuration parameters are determined for the same mobile terminal. The mobile terminal uses the sets of configuration parameters to generate different sounding reference signals which can be used for different purposes such as estimating timing and channel quality. In one embodiment, a method of configuring uplink sounding transmissions by mobile terminals in a wireless communication network is characterized by determining different sets of configuration parameters for sounding signal transmissions for a given mobile terminal (200). The different sets of configuration parameters are transmitted to the mobile terminal, allowing the mobile terminal to generate different sounding signals for different uses by the wireless communication network (202).
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: April 16, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Erik Dahlman, Ylva Jading, Stefan Parkvall
  • Localized and distributed transmission
    Patent number: 10243705
    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: Grant
    Filed: June 9, 2016
    Date of Patent: March 26, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefan Parkvall, Lei Wan, Erik Dahlman
  • Prefixing of OFDM Symbols to Support Variable Subframe Length
    Publication number: 20190089563
    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: Application
    Filed: November 21, 2018
    Publication date: March 21, 2019
    Inventors: Stefan Parkvall, Erik Dahlman, Asbjörn Grövlen
  • Variable transport format parameters for fast acknowledgment feedback mechanism
    Patent number: 10237019
    Abstract: A first communication node (110) receives a stream of code blocks from a second communication node (120) over an acknowledged connection (131.). The first communication node processes the received code blocks in accordance with at least one transport format parameter, TFP, detects errors in received code blocks, and transmits an acknowledgment in respect of groups of code blocks indicating whether at least one error was detected in the group. A first subset of the code blocks of a group are transmitted (e.g., modulated and demodulated) in accordance with a first TFP value, and a remainder of the code blocks are transmitted in accordance with a second TFP value. Because the first and second TFP values are independent, it is possible either to shorten the necessary processing time in the first communication node or, in connection with a predictive acknowledgment mechanism, to make the receiving-side processing of code blocks that do not contribute to the value of the transmitted acknowledgment more robust.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: March 19, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Karl Werner, Robert Baldemair, Håkan Björkegren, Erik Dahlman, Stefan Parkvall
  • Methods and devices for managing connectivity for a service
    Patent number: 10231248
    Abstract: Methods, a wireless device (110) and a network node (120) for managing connectivity are disclosed. The wireless device (110) and/or the network node (120) determines an estimated level of a connectivity for a service of the wireless device (110) towards a wireless network (100). The estimated level of the connectivity relates to likelihood of maintaining the connectivity towards the wireless network (100). The estimated level of the connectivity is determined based on conditions relating to at least one connection for the wireless device (110). The at least one connection is managed by the wireless network (100). Moreover, corresponding computer programs and computer program products are disclosed.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: March 12, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Erik Dahlman, Magnus Frodigh, Mikael Höök, Harald Kallin, Gunnar Mildh, Joachim Sachs
  • Technique for performing a random access procedure over a radio interface
    Patent number: 10219302
    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: July 25, 2013
    Date of Patent: February 26, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Robert Baldemair, Maria Edvardsson, Erik Dahlman, Jacobus Cornelis Haartsen, Stefan Parkvall
  • Uplink Power Control for Power Limited Terminals
    Publication number: 20190053167
    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: October 9, 2018
    Publication date: February 14, 2019
    Inventors: Eva Englund, Erik Dahlman, Anders Furuskär, Ylva Jading, Kristina Jersenius, Stefan Parkvall
  • Method and first network node for managing a request for connectivity for a service of a wireless device
    Patent number: 10206206
    Abstract: A method and a first network node (120) of a wireless network (100) for managing a request for a connectivity for a service of a wireless device (110) are disclosed. The first network node (120) is configured to use a first set of resources of the wireless network (100). The first network node (120) receives (403) the request for the connectivity. The request is associated with a required level of a connectivity for the service. The required level of the connectivity relates to likelihood of maintaining the connectivity towards the wireless network (100). The first network node (120) further configures (404) the first set of resources to increase an estimated level of the connectivity for the service towards the wireless network (100). The estimated level of the connectivity is associated with the wireless network (100). A corresponding computer program and a computer program product are also disclosed.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: February 12, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Erik Dahlman, Magnus Frodigh, Mikael Höök, Harald Kallin, Gunnar Mildh, Joachim Sachs
  • Prefixing of OFDM symbols to support variable subframe length
    Patent number: 10193724
    Abstract: The present disclosure relates to a first radio node (300) configured for orthogonal frequency division multiplexing (OFDM), comprising a receiver (310), a transmitter (320), a processor (330) and a memory (340) storing instructions executable by the processor (330) for causing the transmitter (320) 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: May 12, 2017
    Date of Patent: January 29, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stefan Parkvall, Erik Dahlman, Asbjörn Grövlen