Patents by Inventor Magnus SANDGREN

Magnus SANDGREN 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: 11044667
    Abstract: A method is disclosed for a centralized unit (CU) of a wireless communication network, wherein the CU is associated with each of one or more remote units (RU) of the wireless communication network via a respective communication interface. The CU is adapted to operate in one of a plurality of modes including at least a normal operation mode and a power saving operation mode, and the normal operation mode defines a plurality of functions to be performed by the CU. The method comprises (when the CU is in the normal operation mode) determining that a traffic load associated with the one or more RU fulfills a power saving operation criterion, configuring—via the respective communication interface—each of the RU for autonomous operation, whereby each of the RU is configured to execute at least one of the plurality of functions, and transferring from the normal operation mode to the power saving operation mode.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: June 22, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Magnus Sandgren, Michael Breschel, Pål Frenger, Magnus Nilsson
  • Publication number: 20210098169
    Abstract: A tunable inductor arrangeable on a chip or substrate comprises a first winding part connected at one end to a first input of the tunable inductor arrangement, a second winding part connected at one end to the other end of the first winding part, a third winding part connected at one end to a second input of the tunable inductor arrangement, a fourth winding part connected at one end to the other end of the third winding part, and a switch arrangement arranged. The switch arrangement tunes the tunable inductor by selectively connecting the first and fourth winding parts in parallel and the second and third winding parts in parallel, with the parallel couplings in series between the first and second inputs, or connecting the first, second, fourth and third winding parts in series between the first and second inputs. Corresponding transceivers, communication devices, methods and computer programs are disclosed.
    Type: Application
    Filed: December 10, 2020
    Publication date: April 1, 2021
    Inventors: Magnus Nilsson, Magnus Sandgren
  • Patent number: 10925024
    Abstract: In one aspect, a network node configured to arrange a synchronization service for a target network access node receives a service request from the target network access node for a synchronization service to be provided to the target network access node and selects the synchronization source node, responsive to the service request. The network node sends a response towards the target network access node regarding the synchronization service to be provided by the synchronization source node.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: February 16, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stefano Ruffini, Angelo Centonza, Magnus Sandgren
  • Patent number: 10893493
    Abstract: In a radio communications network using a TDD structure to communicate with UE terminals, a radio network node applies such a TDD structure that at least one guard period is included in each slot between a downlink transmission period containing at least one downlink symbol and an uplink reception period containing at least one uplink symbol. Each guard period represents an interval during which the radio network node does not transmit any data. The radio network node allocates the guard periods dynamically by checking whether at synchronization degradation criterion is fulfilled; and if at least one of the at least one synchronization degradation criterion is fulfilled, the radio network node increases the guard period to have an extended duration relative to a previous duration.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: January 12, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Magnus Sandgren, Robert Baldemair, Anders Höglund, Mårten Wahlström
  • Patent number: 10892080
    Abstract: A tunable inductor arrangeable on a chip or substrate comprises a first winding part connected at one end to a first input of the tunable inductor arrangement, a second winding part connected at one end to the other end of the first winding part, a third winding part connected at one end to a second input of the tunable inductor arrangement, a fourth winding part connected at one end to the other end of the third winding part, and a switch arrangement arranged. The switch arrangement tunes the tunable inductor by selectively connecting the first and fourth winding parts in parallel and the second and third winding parts in parallel, with the parallel couplings in series between the first and second inputs, or connecting the first, second, fourth and third winding parts in series between the first and second inputs. Corresponding transceivers, communication devices, methods and computer programs are disclosed.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: January 12, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Magnus Nilsson, Magnus Sandgren
  • Publication number: 20200413331
    Abstract: A method is disclosed for a centralized unit (CU) of a wireless communication network, wherein the CU is associated with each of one or more remote units (RU) of the wireless communication network via a respective communication interface. The CU is adapted to operate in one of a plurality of modes including at least a normal operation mode and a power saving operation mode, and the normal operation mode defines a plurality of functions to be performed by the CU. The method comprises (when the CU is in the normal operation mode) determining that a traffic load associated with the one or more RU fulfills a power saving operation criterion, configuring—via the respective communication interface—each of the RU for autonomous operation, whereby each of the RU is configured to execute at least one of the plurality of functions, and transferring from the normal operation mode to the power saving operation mode.
    Type: Application
    Filed: September 27, 2017
    Publication date: December 31, 2020
    Inventors: Magnus Sandgren, Michael Breschel, Pål Frenger, Magnus Nilsson
  • Publication number: 20200413360
    Abstract: A group of radio network nodes (14) performs automatic synchronization source selection using Radio-interface Based Synchronization, based on the exchange of clock-attribute information between respective nodes (14) via inter-node connections. Access to the clock-attribute information for other nodes (14) in the same domain or subdomain allows a given node (14) to select the best or most preferred synchronization source for use in synchronizing its own clock (44), based on a combined or joint evaluation of parameters or metrics that include the reception quality of OTA signals from respective ones of the candidate nodes (14) and the corresponding clock-attribute information. Further parameters or metrics may be evaluated in the selection, such as neighbor-relation considerations. The combined use of OTA synchronization signaling and clock-attribute information exchanges, e.g.
    Type: Application
    Filed: February 28, 2019
    Publication date: December 31, 2020
    Inventors: Stefano Ruffini, Garry Irvine, Ohan Khodaverdian, Magnus Sandgren, Mårten Wahlström
  • Patent number: 10880850
    Abstract: In one aspect, a first device determines transmitter location information indicating a location for each of one or more transmitters that provide synchronization signals. The first device inserts the transmitter location information in a time synchronization IE and transmits the time synchronization IE to a second device. The second device receives the transmitter location information from the first device and determines one or more propagation delays of a synchronization signal received from a transmitter based on the transmitter location information received for the transmitter in the IE. The second device uses the determined one or more propagation delays to compensate for a timing difference between the first device and a transmitter of the synchronization signal.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: December 29, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Angelo Centonza, Magnus Sandgren, Chunhui Zhang
  • Publication number: 20200404605
    Abstract: According to certain embodiments, a method in a network node for delivering a time synchronization service comprises obtaining a timing accuracy threshold for a time synchronization service provided to a wireless device; determining, based on a first timing accuracy error at the network node and a second timing accuracy error between the network node and the wireless device, that a timing accuracy of the time synchronization service is equal or superior to the timing accuracy threshold, and transmitting the time synchronization service to the wireless device with a timing accuracy equal or superior to the timing accuracy threshold. The method further comprises, in response to determining that the timing accuracy of the time synchronization service is inferior to the timing accuracy threshold, reconfiguring the network node to improve the timing accuracy of the time synchronization service.
    Type: Application
    Filed: February 15, 2019
    Publication date: December 24, 2020
    Inventors: Angelo CENTONZA, Stefano RUFFINI, Joachim SACHS, Magnus SANDGREN, Mårten WAHLSTRÖM
  • Publication number: 20200396706
    Abstract: In some embodiments, a network node (e.g., a base station) collects information pertaining to components that form a Maximum Received Timing Difference (MRTD). For instance, the network node determines TAE. The network node then evaluates, for a particular UE, whether a certain MRTD requirement (MRTDR) for a specific coordinated service (CS) can be fulfilled. If the requirement can be met, then the network node may initiate the specific CS for the UE (or continue providing the CS), and if the requirement cannot be met, then the network node may stop or modify the CS for the UE.
    Type: Application
    Filed: November 19, 2018
    Publication date: December 17, 2020
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Magnus SANDGREN, Garry IRVINE, Walter MÜLLER, Christer ÖSTBERG, Torgny PALENIUS
  • Publication number: 20200367187
    Abstract: A method performed by a wireless device for determining a timing advance (TA) offset in a new radio (NR) network is described herein along with associated network devices and systems. An exemplary method includes obtaining an indication of whether a carrier frequency of the NR network coexists with a carrier frequency of a long term evolution (LTE) network, determining, based on whether the carrier frequency of the NR network coexists with carrier frequency of the LTE network, a TA offset for uplink transmission; and transmitting an uplink transmission using the determined TA offset.
    Type: Application
    Filed: November 13, 2018
    Publication date: November 19, 2020
    Inventors: Torgny Palenius, Magnus Sandgren, Magnus Larsson, Muhammad Kazmi, Robert Baldemair, Henning Wiemann
  • Patent number: 10834694
    Abstract: Exemplary embodiments include methods for adjusting transmission timing of a wireless communication device (UE) operating in a network including first and second base stations (BS). The methods include determining a first allowable timing adjustment range corresponding to an uplink (UL) connection between the UE and the first BS, and determining a second allowable timing adjustment range corresponding to a supplementary uplink (SUL) connection between the UE and the second BS. The SUL connection is not associated with a DL connection between the UE and the second BS. The methods include determining if a single timing advance (TA) value can be used to adjust the UE's transmission timing to satisfy both the first and second ranges, and performing a corrective action if it is determined that a single TA value cannot be used. Embodiments also include first and second BS, and UEs, configured to perform the exemplary methods.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: November 10, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Magnus Sandgren, Robert Baldemair, Torgny Palenius
  • Publication number: 20200314782
    Abstract: In one aspect, a network access node requests, via a service request, a synchronization service from a network node, receives synchronization source information corresponding to the synchronization service and uses the synchronization source information to detect and measure signals from a synchronization source node. The network access node stores signal identifiers corresponding to one or more of the measured signals as neighbor information and subsequently performs signal measurements on signals from the synchronization source node, based on the stored signal identifiers, and uses the signal measurements to perform a mobility operation.
    Type: Application
    Filed: March 31, 2017
    Publication date: October 1, 2020
    Inventors: Stefano RUFFINI, Angelo CENTONZA, Magnus SANDGREN
  • Publication number: 20200259896
    Abstract: Techniques for enhancing performance in Industrial Internet-of-Things (IIoT) scenarios, including techniques for time-sensitive networking (TSN) and 5G wireless network integration. An example method, performed by a wireless device, comprises receiving system information (SI) from a radio base station (RBS) of a radio access network (RAN), the SI being indicative of support for TSN through the RBS, and establishing at least one TSN stream with an external data network, through the RBS. The example method further includes receiving a first timing signal from the wireless communications network, via the RBS, receiving a second timing signal from the external TSN data network to which the wireless device is connected, comparing the first timing signal to the second timing signal to determine an offset, and transmitting the offset to the wireless communications network.
    Type: Application
    Filed: February 13, 2019
    Publication date: August 13, 2020
    Inventors: Joachim Sachs, Abdulrahman Alabbasi, Mattias Andersson, Niklas Andgart, Ola Angelsmark, José Araújo, Muhammad Ikram Ashraf, Kumar Balachandran, Robert Baldemair, Rodrigo Berg, Yufei Blankenship, Fedor Chernogorov, John Walter Diachina, Torsten Dudda, Henrik Enbuske, Sorour Falahati, János Farkas, Jonas Fröberg Olsson, Majid Gerami, Harald Gustafsson, Kimmo Hiltunen, Andreas Höglund, Torgny Holmberg, Zsolt Kenesi, András Kern, Kittipong Kittichokechai, Anna Larmo, Johan Lundsjö, György Miklós, Hubertus Munz, Gabor Nemeth, Johannes Nygren, Johan Olsson, Alexandros Palaios, Dhruvin Patel, Joakim Persson, Per Persson, Jose Luis Pradas, Sándor Rácz, Pradeepa Ramachandra, Norbert Reider, Dinand Roeland, Stefano Ruffini, Patrik Salmela, Sara Sandberg, Magnus Sandgren, Paul Schliwa-Bertling, Alexey Shapin, Nianshan Shi, Bikramjit Singh, Per Skarin, Bernard Smeets, Ying Sun, Dennis Sundman, Fredrik Svensson, Malgorzata Svensson, Geza Szabo, Wolfgang Tonutti, Balázs Varga, Mårten Wahlström, Kun Wang, Yi-Pin Eric Wang, Osman Nuri Can Yilmaz, Zhenhua Zou, Miguel Lopez
  • Patent number: 10582465
    Abstract: A method for configuration of radio interface based synchronisation comprises obtaining of hearability information and synchronisation ability information concerning a multitude of radio base stations. The hearability information comprises an identity of the radio base station, and experienced signal quality from and identities of other radio base stations. The synchronisation ability information comprises information about a quality of synchronisation obtainable by the radio base station. A radio interface based synchronisation configuration is created in dependence of the obtained information. The radio interface based synchronisation configuration comprises definitions of synchronisation links, which radio base stations are recommended to use for synchronisation purposes. Data defining the radio interface based synchronisation configuration is provided for transmission to the respective radio base stations.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: March 3, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Mikael Olofsson, Angelo Centonza, Magnus Sandgren
  • Publication number: 20190357157
    Abstract: In a radio communications network using a TDD structure to communicate with UE terminals, a radio network node applies such a TDD structure that at least one guard period is included in each slot between a downlink transmission period containing at least one downlink symbol and an uplink reception period containing at least one uplink symbol. Each guard period represents an interval during which the radio network node does not transmit any data. The radio network node allocates the guard periods dynamically by checking whether at synchronization degradation criterion is fulfilled; and if at least one of the at least one synchronization degradation criterion is fulfilled, the radio network node increases the guard period to have an extended duration relative to a previous duration.
    Type: Application
    Filed: January 16, 2017
    Publication date: November 21, 2019
    Inventors: Magnus SANDGREN, Robert BALDEMAIR, Anders HÖGLUND, Mårten WAHLSTRÖM
  • Publication number: 20190313356
    Abstract: Exemplary embodiments include methods adjusting transmission timing of a wireless communication device (UE) operating in a network comprising first and second base stations (BS). The methods include determining a first allowable timing adjustment range corresponding to an uplink (UL) connection between the UE and the first BS. The methods include determining a second allowable timing adjustment range corresponding to a supplementary uplink (SUL) connection between the UE and the second BS, wherein the SUL connection is not associated with a DL connection between the UE and the second BS. The methods include determining if a single timing advance (TA) value can be used to adjust the UEs transmission timing to satisfy both the first and second ranges, and performing a corrective action if it is determined that said single TA value cannot be used. Embodiments also include first and second BS, and UEs, configured to perform various aspects of the exemplary methods.
    Type: Application
    Filed: March 26, 2019
    Publication date: October 10, 2019
    Inventors: Magnus Sandgren, Robert Baldemair, Torgny Palenius
  • Publication number: 20190214176
    Abstract: A tunable inductor arrangeable on a chip or substrate comprises a first winding part connected at one end to a first input of the tunable inductor arrangement, a second winding part connected at one end to the other end of the first winding part, a third winding part connected at one end to a second input of the tunable inductor arrangement, a fourth winding part connected at one end to the other end of the third winding part, and a switch arrangement arranged. The switch arrangement tunes the tunable inductor by selectively connecting the first and fourth winding parts in parallel and the second and third winding parts in parallel, with the parallel couplings in series between the first and second inputs, or connecting the first, second, fourth and third winding parts in series between the first and second inputs. Corresponding transceivers, communication devices, methods and computer programs are disclosed.
    Type: Application
    Filed: March 21, 2019
    Publication date: July 11, 2019
    Inventors: Magnus Nilsson, Magnus Sandgren
  • Patent number: 10320462
    Abstract: Techniques in a node of a wireless communications network, where one or more wireless devices are served via beams transmitted by network nodes. An example method comprises estimating (910), for a wireless device operating in the wireless communications network, a Doppler shift associated with movement of the wireless device, or a Doppler spread associated with movement of the wireless device, or both. The method further comprises, based on said estimating, evaluating (920) a change in estimated Doppler shift associated with the wireless device or evaluating the estimated Doppler spread associated with the wireless device, or both, and adjusting (930) at least one mobility-related parameter, based on said evaluating of the change in estimated Doppler or the evaluating of the estimated Doppler spread, or both. The method further comprises carrying (940) out one or more mobility procedures for the wireless device, based on the adjusted at least one mobility-related parameter.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: June 11, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Torgny Palenius, Magnus Sandgren
  • Patent number: 10321424
    Abstract: A method and nodes for wireless timing synchronization of a target node and a source node. In some embodiments, a request is sent to a source node for time synchronizing the target node with the source node. A first time, T1, indicative of time of transmission of a first radio signal from the source node to the target node is determined. A second time, T2, indicative of time of receipt of the first radio signal at the target node is determined. A third time, T3, indicative of time of transmission of a second radio signal from the target node to the source node is determined. A fourth time, T4, indicative of time of receipt of the second radio signal at the source node is determined. A clock offset based on T1, T2, T3 and T4 for use in time synchronizing the target node with the source node is determined.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: June 11, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Chunhui Zhang, Angelo Centonza, Garry Irvine, Mikael Olofsson, Magnus Sandgren