Patents by Inventor Stefan Parkvall

Stefan Parkvall 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: 10314050
    Abstract: A method is disclosed of a network node of a cellular communication system for configuring a first cell of the cellular communication system in relation to a second cell of the cellular communication system. A coverage area of the first cell and a coverage area of the second cell overlap, at least partly. The first cell is to be provided by a first base station of the cellular communication system and has a first bandwidth and the second cell is provided by a second base station of the cellular communication system and has a second bandwidth which is larger than the first bandwidth. The method comprises determining an offset between a first carrier frequency of the first cell and a second carrier frequency of the second cell and configuring the first base station to provide the first cell based on the first carrier frequency.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: June 4, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    Inventors: Bengt Lindoff, Bo Hagerman, Stefan Parkvall
  • Patent number: 10305639
    Abstract: Transmitting node and receiving node and methods therein for a high-reliability transmission scheme with low resource utilization. The transmission scheme comprises two modes, where a first mode comprises regular acknowledged retransmission, and a second mode comprises accelerated, or otherwise ramped-up retransmission, thus improving the probability of conveying a message successfully within an allowed delay budget.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: May 28, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Robert Baldemair, Gabor Fodor, Ather Gattami, Stefan Parkvall
  • Publication number: 20190159213
    Abstract: According to certain embodiments, a user equipment, UE, is operable for multiple sub-carrier spacing values. The UE comprises memory operable to store instructions and processing circuitry operable to execute the instructions, whereby the UE is operable to determine one of a plurality of time-domain resource allocation tables based on first information received from a network node. The first information comprises a Radio Network Temporary Identifier, RNTI. The UE is operable to determine a time-domain resource allocated to the UE for transmission or reception of a wireless signal based on the determined one of the plurality of time-domain resource allocation tables and second information received from the network node. The second information comprises a time-domain resource allocation field value received in downlink control information, DCI. The UE is further operable to transmit or receive the wireless signal using the determined time-domain resource.
    Type: Application
    Filed: November 16, 2018
    Publication date: May 23, 2019
    Inventors: Robert Baldemair, Jung-Fu Cheng, Daniel Larsson, Ravikiran Nory, Stefan Parkvall
  • Patent number: 10299233
    Abstract: A method performed by a first user equipment for performing Device-to-Device, D2D, communications with a second user equipment is provided. The first user equipment determines that a valid timing reference is not present in the first user equipment. Also, the first user equipment determines whether a preconfigured timing advance can be used in the D2D communication. Then, when determined that the preconfigured timing advance can be used, the first user equipment transmits a D2D signal to the second user equipment with a timing using the preconfigured timing advance to perform D2D communication. A user equipment, a network node and method therein for enabling D2D communications between user equipments in a radio communications network are also provided.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: May 21, 2019
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Stefan Parkvall, Bengt Lindoff, Qianxi Lu, Stefano Sorrentino
  • Patent number: 10285195
    Abstract: The present disclosure relates to random access in wireless communication systems, and in particular to a wireless device, a preamble receiver, and methods for processing random access preamble signals. A disclosed method in a wireless device comprises generating (S11) one or more identical short sequences having a same time duration as an OFDM symbol used for carrying data traffic in a radio access network of the wireless device. The method also comprises generating (S12) at least one offset indicator sequence different from each of the short sequences, and constructing (S13) the preamble sequence by concatenating the at least one offset indicator sequence and the one or more identical short sequences in time, such that each of the at least one offset indicator sequence has a respective pre-determined location in the preamble sequence.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: May 7, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Henrik Sahlin, Stefan Parkvall, Peter Nauclér
  • Patent number: 10284310
    Abstract: Embodiments herein relate to methods performed by a wireless device for sending a report on channel information to a network node, methods performed by a network node for receiving a report on channel information, and corresponding wireless devices and network nodes. A network node controls at least one Transmission Point (TP) that transmits TP beams. Each TP beam is associated with respective beamformed Beam-specific Reference Signal (BRS) for channel information measurements. The wireless device sends the report, which comprises a number of sub-reports, to the network node. Each sub-report is associated with a TP beam. Each associated TP beam comprises at least one BRS and is selected by the device. Each sub-report is also associated with an indicator of channel quality value for one code word transmitted by the network node on the associated TP beam.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: May 7, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mattias Frenne, Stefan Parkvall, Johan Furuskog
  • Publication number: 20190124684
    Abstract: According to certain embodiments, a method by a wireless device is provided for performing logical channel prioritization (LCP) by a wireless device. The method includes selecting a set of logical channels based on one or more logical channel restrictions. The method further includes determining at least one logical channel of the set of logical channels to serve.
    Type: Application
    Filed: December 20, 2018
    Publication date: April 25, 2019
    Inventors: Mats Folke, Stefan Parkvall
  • Patent number: 10271309
    Abstract: Systems and methods are disclosed for transmission and reception of an uplink grant during a gap created in radio resources assigned by a previous multiple Transmit Time Interval (multi-TTI) uplink grant in a system operating according to a Time Division Duplexing (TDD) scheme. In one embodiment, a method of operation of a radio network node in a cellular communications network is provided. The method includes transmitting a first uplink grant that assigns radio resources for a multi-TTI uplink transmission, and transmitting a second uplink grant during a gap in the radio resources assigned by the first uplink grant. In one embodiment, by utilizing the gap to transmit the second uplink grant, uplink radio resources assigned for uplink transmission can be maximized, which is particularly beneficial in high uplink traffic conditions.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: April 23, 2019
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Henrik Sahlin, Mattias Frenne, Johan Furuskog, Stefan Parkvall, Qiang Zhang
  • 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
  • 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
  • Publication number: 20190110279
    Abstract: According to some embodiments, a method in a network node for configuring monitoring occasions for use in a network node of a wireless communication network comprises determining a physical downlink control channel (PDCCH) search space monitoring configuration for a wireless device. The PDCCH search space monitoring configuration comprises a monitoring periodicity and a number of blind decodes for each search space of a plurality of search spaces over a plurality of slots. The method further comprises sending the monitoring configuration to the wireless device. A method in a wireless device comprises receiving the monitoring configuration and monitoring each search space according to the monitoring configuration.
    Type: Application
    Filed: December 5, 2018
    Publication date: April 11, 2019
    Inventors: Ali BEHRAVAN, Sorour FALAHATI, Havish KOORAPATY, Stefan PARKVALL
  • 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
  • Publication number: 20190089560
    Abstract: Methods and apparatuses disclosed herein enable the use of Demodulation Reference Signal, DMRS, sequences that are numbered relative to an overall system bandwidth (30), while simultaneously enabling wireless communication devices (12) to determine the DRMS sequence elements mapped to their scheduled bandwidths (36) within the system bandwidth (30). Advantageously, the wireless communication devices (12) need not know the system bandwidth (30), or even be aware of where their scheduled bandwidths (36) reside within the system bandwidth (30).
    Type: Application
    Filed: September 25, 2017
    Publication date: March 21, 2019
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Robert Baldemair, Mattias Frenne, Stefan Parkvall
  • 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
  • Patent number: 10237851
    Abstract: The embodiments of the present invention relate to apparatuses and methods for resource management in a multi-carrier system wherein a plurality of component carriers (CCs) is defined per cell. According to a method in an apparatus corresponding to a radio base station, a message is assembled comprising information on the structure of the cell served by the radio base station; the information including one or more CCs used in the cell that is/are available for a user equipment for performing initial access in the cell. The method also comprises, transmitting the assembled message to the user equipment and indicating to the user equipment to what resources to use for random access in the cell. The exemplary embodiments of the present invention also relates to a method in the user equipment, to a radio base station and to a user equipment.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: March 19, 2019
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Stefan Wager, Stefan Parkvall, Magnus Stattin, Ghyslain Pelletier
  • 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
  • Patent number: 10231221
    Abstract: The present disclosure relates to random access in wireless communication systems, and in particular to transmitting, receiving, and detecting preamble sequences. A method in a wireless device for transmitting a preamble sequence to a network node is disclosed. The method comprises configuring a number of preamble sequences into two or more preamble sets, wherein each preamble set is associated with at least one respective uplink transmission condition; determining a transmission condition of an uplink from the wireless device to the network node; and selecting one out of the two or more preamble sets based on the determined transmission condition to be a selected preamble set, and a preamble sequence from the selected preamble set to be a selected preamble sequence; as well as transmitting the selected preamble sequence on the uplink.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: March 12, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Johan Furuskog, Mattias Frenne, Qiang Zhang, Henrik Sahlin, Stefan Parkvall, Håkan Andersson
  • 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
  • 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
  • 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