Patents by Inventor Andreas Cedergren

Andreas Cedergren 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: 10334489
    Abstract: There is provided a method for handling mobility synchronization measurements. The method is performed by a wireless device. The method comprises receiving an indication to perform mobility measurements on a set of transmission beams associated with a unique identity. The method comprises checking if the unique identity has previously been stored by the wireless device. The method comprises, if the unique identity has not previously been stored by the wireless device, performing mobility measurements on the set of transmission beams to determine synchronization information of the set of transmission beams. The method comprises storing the unique identity and the synchronization information of the mobility measurements.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: June 25, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    Inventors: Andreas Cedergren, Andres Reial, Claes Tidestav
  • Publication number: 20190181938
    Abstract: There is provided a method and a network node for allocating and transmitting Mobility Reference Signals, MRS, for a communication device to measure beam signal quality in a wireless communication network. The network node obtains information on one or more of a frequency diversity, a time diversity of a channel between the network node and the communication device, an antenna spatial diversity of the communication device. The network node selects an MRS pattern out of a set of candidate patterns based on the received information, signals the selected MRS pattern to the communication device and transmits the MRS according to the selected MRS pattern.
    Type: Application
    Filed: January 28, 2019
    Publication date: June 13, 2019
    Inventors: Andres Reial, Andreas Cedergren, Claes Tidestav
  • Patent number: 10306574
    Abstract: A synchronising assisting device (14) sends an adjustment value (AV) to a mobile station (12) for use when synchronising to a resource employed by the target cell (17), where the adjustment value (AV) is an estimate of the change in timing required to synchronise to a reference signal interval of the resource, and processes the adjustment value (AV) if an indication (IATC) of the actual change in timing required for synchronizing to the reference signal interval is received from the mobile station. The mobile station receives the adjustment value (AV), synchronises to the resource starting at a starting point set by the adjustment value (AV), detects a pilot signal in the reference signal interval, determines an actual change in timing required for synchronising to the reference signal interval, investigates the difference and sends an indication (IATC) of the required actual change in timing to the synchronising assisting device (14).
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: May 28, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Claes Tidestav, Andreas Cedergren, Andres Reial
  • Publication number: 20190158169
    Abstract: There is provided a method and a network node for allocating and transmitting Mobility Reference Signals, MRS, for a communication device to measure beam signal quality in a wireless communication network. The network node obtains information on one or more of a frequency diversity, a time diversity of a channel between the network node and the communication device, an antenna spatial diversity of the communication device. The network node selects an MRS pattern out of a set of candidate patterns based on the received information, signals the selected MRS pattern to the communication device and transmits the MRS according to the selected MRS pattern.
    Type: Application
    Filed: January 28, 2019
    Publication date: May 23, 2019
    Inventors: Andres Reial, Andreas Cedergren, Claes Tidestav
  • Patent number: 10165456
    Abstract: This disclosure provides by a method for transmitting a mobility reference signal, MRS, during a mobility measurement session to a wireless device, WD. The method is performed in a radio access network node, RANN. The RANN is configurable to transmit using a set of transmission beams. The method comprises dynamically assigning, a MRS identifier to each candidate transmission beam in a set of candidate transmission beams. The method comprises transmitting control information to the WD, the control information comprising the MRS identifier for each corresponding candidate transmission beam; and transmitting the mobility reference signal, MRS, to the WD in accordance with the transmitted control information.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: December 25, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    Inventors: Andres Reial, Andreas Cedergren, Claes Tidestav
  • Publication number: 20180152232
    Abstract: A method for a network node of a cellular communication network is disclosed. The network node and at least some other network nodes of the cellular communication network are each adapted to support a plurality of beams of a signal beam-forming scheme and to communicate with a wireless communication device using at least one of the plurality of beams. The method comprises initiating a mobility procedure, identifying interfering signals transmitted by one or more interfering beams, decreasing a transmit power level of the identified interfering signals, and executing at least part of the mobility procedure while the identified interfering signals use the decreased transmit power level.
    Type: Application
    Filed: June 12, 2015
    Publication date: May 31, 2018
    Inventors: Andreas Cedergren, Andres Reial, Claes Tidestav
  • Publication number: 20180152869
    Abstract: A method for a network node of a cellular communication network is disclosed. The network node and at least some other network nodes of the cellular communication network are each adapted to support a plurality of beams of a signal beam-forming scheme and to communicate with a wireless communication device using at least one of the plurality of beams. The method comprises identifying one or more candidate beams, causing transmission of a reference signal on each of the candidate beams, causing reservation of an uplink resource of at least one of the candidate beams (wherein the uplink resources are for conveying a report from the wireless communication device, and wherein the report is indicative of a result of measurements of the reference signals), and causing the communication with the wireless communication device to use a target beam (wherein one of the candidate beams is selected as the target beam based on the conveyed report).
    Type: Application
    Filed: June 12, 2015
    Publication date: May 31, 2018
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Andreas Cedergren, Andres Reial, Claes Tidestav
  • Publication number: 20180115401
    Abstract: A method for a network node of a cellular communication network is disclosed. The network node is adapted to communicate with a wireless communication device. The method comprises acquiring location-related parameters of the wireless communication device, dynamically determining—based on the acquired location-related parameters—a transmission pattern of reference signals (wherein the reference signals are for mobility measurements by the wireless communication device), indicating the determined transmission pattern to the wireless communication device and transmitting the reference signals in accordance with the determined transmission pattern. Dynamically determining the transmission pattern may be further based on handover statistics associated with the location-related parameters. The location-related parameters may comprise at least one of a geographical position of the wireless communication device and a travelling speed of the wireless communication device.
    Type: Application
    Filed: October 20, 2015
    Publication date: April 26, 2018
    Inventors: Andreas CEDERGREN, Andres REIAL, Claes TIDESTAV
  • Publication number: 20170331670
    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: May 13, 2016
    Publication date: November 16, 2017
    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
  • Publication number: 20170331577
    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: Application
    Filed: May 13, 2016
    Publication date: November 16, 2017
    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, 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, 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
  • Publication number: 20170318549
    Abstract: A synchronising assisting device (14) sends an adjustment value (AV) to a mobile station (12) for use when synchronising to a resource employed by the target cell (17), where the adjustment value (AV) is an estimate of the change in timing required to synchronise to a reference signal interval of the resource, and processes the adjustment value (AV) if an indication (IATC) of the actual change in timing required for synchronizing to the reference signal interval is received from the mobile station. The mobile station receives the adjustment value (AV), synchronises to the resource starting at a starting point set by the adjustment value (AV), detects a pilot signal in the reference signal interval, determines an actual change in timing required for synchronising to the reference signal interval, investigates the difference and sends an indication (IATC) of the required actual change in timing to the synchronising assisting device (14).
    Type: Application
    Filed: November 3, 2014
    Publication date: November 2, 2017
    Inventors: Claes Tidestav, Andreas Cedergren, Andres Reial
  • Publication number: 20170303173
    Abstract: There is provided a method for handling mobility synchronization measurements. The method is performed by a wireless device. The method comprises receiving an indication to perform mobility measurements on a set of transmission beams associated with a unique identity. The method comprises checking if the unique identity has previously been stored by the wireless device. The method comprises, if the unique identity has not previously been stored by the wireless device, performing mobility measurements on the set of transmission beams to determine synchronization information of the set of transmission beams. The method comprises storing the unique identity and the synchronization information of the mobility measurements.
    Type: Application
    Filed: October 8, 2014
    Publication date: October 19, 2017
    Inventors: Andreas CEDERGREN, Andres REIAL, Claes TIDESTAV
  • Patent number: 9693273
    Abstract: There is provided a method for triggering mobility measurements for a wireless device. The method is performed by a radio access network node (RANN). The RANN is configurable to transmit using a set of transmission beams. The method comprises receiving signalling from a wireless device (WD). The user traffic signalling is indicative of a current position of the WD and a performance quality metric of the WD. The method comprises, only in a case the performance quality metric fulfills a location dependent performance quality criterion, activating transmission of mobility pilot signals to the WD in at least one transmission beam in the set of transmission beams. The method comprises, thereafter, instructing the WD to perform measurements on the at least one transmission beam.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: June 27, 2017
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    Inventors: Andreas Cedergren, Andres Reial, Claes Tidestav
  • Publication number: 20170142604
    Abstract: This disclosure provides by a method for transmitting a mobility reference signal, MRS, during a mobility measurement session to a wireless device, WD. The method is performed in a radio access network node, RANN. The RANN is configurable to transmit using a set of transmission beams. The method comprises dynamically assigning, a MRS identifier to each candidate transmission beam in a set of candidate transmission beams. The method comprises transmitting control information to the WD, the control information comprising the MRS identifier for each corresponding candidate transmission beam; and transmitting the mobility reference signal, MRS, to the WD in accordance with the transmitted control information.
    Type: Application
    Filed: December 17, 2014
    Publication date: May 18, 2017
    Inventors: Andres Reial, Andreas Cedergren, Claes Tidestav
  • Patent number: 9615247
    Abstract: The embodiments herein relate to a method in a base station (101) for transmitting a transport block to a user equipment (105) in a communications network (100). The transport block comprises a plurality of bits. The base station (101) selects (203a, 203b, 401) a transport format. The base station (101) dynamically selects (204a, 203b, 402) a first redundancy version parameter based on a decoding performance for the transport block. The base station (101) transmits (205a, 204b, 404) the transport block comprising the plurality of bits distributed according to the dynamically selected first redundancy version parameter and according to the selected transport format in a first transmission to the user equipment (105).
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: April 4, 2017
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Jaroslaw Niewczas, Andreas Cedergren, Andres Reial
  • Patent number: 9591543
    Abstract: A handover control method for a network node of a cellular communication network may include the network node receiving one or more signals from each of one or more other network nodes. The one or more signals are indicative of a result of uplink signal strength measurements performed by the other network node in relation to a wireless communication device and an available downlink transmission power value of the other network node. The network node then bases a handover decision on an estimated downlink received power of the wireless communication device in relation to the other network node. The estimated downlink received power is based on the result of the uplink signal strength measurements and the available downlink transmission power.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: March 7, 2017
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Andres Reial, Andreas Cedergren, Claes Tidestav
  • Publication number: 20170054486
    Abstract: There is provided a method and a network node for allocating and transmitting Mobility Reference Signals, MRS, for a communication device to measure beam signal quality in a wireless communication network. The network node obtains information on one or more of a frequency diversity, a time diversity of a channel between the network node and the communication device, an antenna spatial diversity of the communication device. The network node selects an MRS pattern out of a set of candidate patterns based on the received information, signals the selected MRS pattern to the communication device and transmits the MRS according to the selected MRS pattern.
    Type: Application
    Filed: August 17, 2015
    Publication date: February 23, 2017
    Inventors: Andres Reial, Andreas Cedergren, Claes Tidestav
  • Publication number: 20160262074
    Abstract: A handover control method for network nodes of a cellular communication network is disclosed. According to the method, a network node receives one or more signals from each of one or more other network nodes, wherein the one or more signals are indicative of a result of uplink signal strength measurements performed by the other network node in relation to a wireless communication device and an available downlink transmission power value of the other network node. The network node then bases a handover decision on an estimated downlink received power of the wireless communication device in relation to the other network node, wherein the estimated downlink received power is based on the result of the uplink signal strength measurements and the available downlink transmission power. Receiving the one or more signals may comprise receiving an indication of the available downlink transmission power value and receiving the uplink signal strength measurements.
    Type: Application
    Filed: October 8, 2014
    Publication date: September 8, 2016
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Andres Reial, Andreas Cedergren, Claes Tidestav
  • Publication number: 20160255548
    Abstract: There is provided a method for triggering mobility measurements for a wireless device. The method is performed by a radio access network node (RANN). The RANN is configurable to transmit using a set of transmission beams. The method comprises receiving signalling from a wireless device (WD). The user traffic signalling is indicative of a current position of the WD and a performance quality metric of the WD. The method comprises, only in a case the performance quality metric fulfils a location dependent performance quality criterion, activating transmission of mobility pilot signals to the WD in at least one transmission beam in the set of transmission beams. The method comprises, thereafter, instructing the WD to perform measurements on the at least one transmission beam.
    Type: Application
    Filed: September 23, 2014
    Publication date: September 1, 2016
    Inventors: Andreas Cedergren, Andres Reial, Claes Tidestav
  • Patent number: 9264081
    Abstract: Estimation of interference cancellation efficiency as disclosed herein advantageously accounts for the real-world or effective performance of interference cancellation by estimating the interference cancellation efficiency expected for a signal targeted for interference cancellation as a joint function of signal parameters for the targeted signal and one or more other signals that will remain after such cancellation. For example, a wireless communication apparatus, such as a user equipment configured for operation in a cellular communication network, is configured to estimate the interference cancellation efficiency expected for an interfering signal received in conjunction with a desired signal, based on a joint function of signal parameters for the interfering signal and the desired signal. Such processing extends directly, of course, to the consideration of multiple interferers and/or multiple desired signals, and may be carried out in each of two or more interference cancellation processing iterations.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: February 16, 2016
    Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Andreas Cedergren, Bo Lincoln, Andres Reial