Patents by Inventor Claes Tidestav

Claes Tidestav 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: 10812155
    Abstract: An access node transmits, in a downlink signal having a series of subframes, a beam-formed reference signal in subframes, where the beam-formed reference signals are transmitted in fewer than all of the subframes of the downlink signal. A first subset includes beam-formed reference signals corresponding to a first frequency or first localized range of frequencies, and a second subset includes beam-formed reference signals corresponding to a second frequency or second localized range of frequencies. The second frequency or second localized range of frequencies is spaced apart from and differing from the first frequency or first localized range of frequencies. A user equipment, UE, receives, in the downlink signal, the beam-formed reference signal in each of a plurality of subframes. The UE performs mobility management measurements using at least the first subset of the received beam-formed reference signals and performs RLM using the second subset of the received beam-formed reference signals.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: October 20, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Icaro L. J. da Silva, Rui Fan, Pradeepa Ramachandra, Claes Tidestav, Umut Ugurlu
  • Patent number: 10790882
    Abstract: Exemplary embodiments include methods performed by a network node to configure PUCCH resources usable in communication with UE in a wireless network. Embodiments include sending, to the UE, one or more control messages comprising: configuration of a plurality of PUCCH resources; and identification of a plurality of spatial relations associated with one or more reference signals transmitted by the UE or the network node. Embodiments also include sending, to the UE, a further control message comprising: identification of a first spatial relation of the plurality of spatial relations; and indication of whether the first spatial relation applies to a single PUCCH resource of the configured PUCCH resources, or to at least one group of PUCCH resources of the configured PUCCH resources. Exemplary embodiments also include complementary methods performed by a UE, as well as network nodes and UEs configured to perform the exemplary methods.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: September 29, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stephen Grant, Sebastian Faxér, Mattias Frenne, Siva Muruganathan, Claes Tidestav
  • Publication number: 20200305088
    Abstract: A user equipment (UE) being configured to receive a downlink, DL, information; determine a spatial association for an uplink, UL, transmission based on the DL information; and determine UL power control, PC, parameters based on the DL information.
    Type: Application
    Filed: September 11, 2018
    Publication date: September 24, 2020
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ravikiran NORY, Stephen GRANT, Claes TIDESTAV, Niklas WERNERSSON
  • Publication number: 20200305045
    Abstract: Disclosed is a method performed by a network equipment for controlling handover of a User Equipment (UE) from a source network node to a target network node. The method comprises providing, for the UE and for the target network node, information comprising a representation of a UE-specific sequence, where the UE-specific sequence is to be incorporated in a signal, the signal to be transmitted by the target network node to enable the UE to initiate a radio link establishment procedure with the target network node based on a reception of a signal comprising said UE-specific sequence.
    Type: Application
    Filed: June 8, 2020
    Publication date: September 24, 2020
    Inventors: Rui Fan, Andres Reial, Johan Rune, Claes Tidestav
  • Patent number: 10784941
    Abstract: According to some embodiments, a method for use in a network node of transmitting reference signals in a wireless network using a plurality of beams comprises obtaining a node identifier for the network node. The node identifier is unique for neighboring network nodes within a particular coverage area of the wireless network. The method further comprises obtaining a group of reference signal sequences. The group comprises a subset of a pool of possible reference signal sequences for use in the wireless network. Each reference signal sequence is associated with a beam reference identifier. The method further comprises selecting a reference signal sequence from the obtained group: scrambling a reference signal transmission pattern using the obtained node identifier and the selected reference signal sequence with associated beam reference identifier; and transmitting the scrambled reference signal transmission pattern to a user equipment on one of the beams among the plurality of beams.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: September 22, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Pradeepa Ramachandra, Icaro L. J. Da Silva, Reza Moosavi, Edgar Ramos, Claes Tidestav, Umut Ugurlu
  • Publication number: 20200288503
    Abstract: According to certain embodiments, a method performed by a wireless device comprises initiating a random access procedure in which the wireless device sends a Physical Random Access Channel, PRACH, preamble to a network node and applying a receiver configuration for receiving an access response. The receiver configuration is determined based at least in part on whether a many-to-one association exists between (a) a downlink signal that can be used for beam selection prior to initiating the random access procedure, and (b) PRACH preamble indices.
    Type: Application
    Filed: November 9, 2018
    Publication date: September 10, 2020
    Inventors: Henrik SAHLIN, Claes TIDESTAV, Andres REIAL, Icaro L. J. DA SILVA, Johan AXNÄS
  • Patent number: 10764800
    Abstract: An access node configures a user equipment, UE, to perform mobility management measurements using at least a first subset of beam-formed reference signals and to perform radio link monitoring, RLM, using at least some of the first subset of beam-formed reference signals used for the mobility management measurements. The access node transmits, in a first downlink signal having a series of subframes, a beam-formed reference signal in each of a plurality of subframes, where the beam-formed reference signals are transmitted in fewer than all of the subframes of the downlink signal. The UE receives, in the beam-formed downlink signal, the beam-formed reference signal in each of the plurality of subframes. The UE performs mobility management measurements using at least a first subset of the received beam-formed reference signals and performs RLM using at least some of the first subset of beam-formed reference signals used for the mobility management measurements.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: September 1, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Umut Ugurlu, Icaro L. J. da Silva, Rui Fan, Pradeepa Ramachandra, Claes Tidestav
  • Patent number: 10757591
    Abstract: Embodiments herein relate to a method performed by a wireless device (10) for handling communication in a wireless communication network. The wireless device (10) stores a time instant associated with a receiving event relating to reference signal detection and information related to the receiving event. The wireless device (10) further detects a connection event related to a connection of the wireless device; and reports the time instant and the information to a radio network node (13) in the wireless communication network.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: August 25, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Fredrik Gunnarsson, Icaro L.J. Da Silva, Pål Frenger, Reza Moosavi, Pradeepa Ramachandra, Claes Tidestav, Kristina Zetterberg
  • Publication number: 20200260430
    Abstract: Some embodiments of this disclosure provide a method performed by one or more transmission points, TRPs, for communicating with a user equipment, UE. In some embodiments, the method includes: using a first transmit, TX, beam to communicate with the UE; receiving, from the UE, information indicating that the UE has determined that the first TX beam has experienced a beam failure; and after the information is received, using a second TX beam to communicate with the UE.
    Type: Application
    Filed: April 28, 2020
    Publication date: August 13, 2020
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stephen GRANT, Mattias FRENNE, Andreas NILSSON, Claes TIDESTAV
  • Patent number: 10743326
    Abstract: A user equipment, UE, performs measurements based on a plurality of RLM sources received in beam-formed downlink signals, where the measurements indicate a quality of a given cell or beam. The plurality of sources comprises two or more of: first reference signals (RSs), second RSs of a different type than the first RSs, and one or more physical channel quality indicators obtained from non-reference-signal data in the beam-formed downlink signals. For each of the plurality of sources used to perform measurements, the UE determines whether a measurement for the respective source indicates an out-of-sync event in response to the measurement being below a first threshold. The UE then performs an RLM action based on determined occurrences of out-of-sync events.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: August 11, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Icaro L. J. da Silva, Rui Fan, Claes Tidestav, Umut Ugurlu
  • Publication number: 20200252951
    Abstract: In some embodiments, a network (e.g., a TRP) provides to a UE information indicating that a transmitted “first” RS resource (or “RS” for short) is quasi-co-located (QCL) with a scheduled transmission for the UE (e.g., a “second” RS). The UE may then receive the scheduled transmission under an assumption that the scheduled transmission (e.g., a second RS, such as a demodulation RS (DMRS)) is QCL with the first RS. The UE may receive such QCL information before, after or while receiving the first RS.
    Type: Application
    Filed: August 7, 2018
    Publication date: August 6, 2020
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mattias FRENNE, Sebastian FAXÉR, Stephen GRANT, Claes TIDESTAV
  • Patent number: 10736004
    Abstract: Disclosed is methods, devices and computer programs for controlling an uplink measurement procedure. There is in particular disclosed a method performed by a source access network node (1) in a wireless communication network for controlling an uplink measurement procedure for signals transmitted from a User Equipment (2), UE (2), to at least one candidate access network node (3). The method comprises providing (S1) a representation of first uplink resource to the UE (2) and the at least one candidate access network node (3), the first uplink resource to be used for transmission of a signal by the UE (2) for the at least one candidate access network node (3) to perform measurements on. The method also comprises the step of providing (S2), based on an indication that no measurement was performed by a specific candidate access network node (3) on a signal transmitted using the uplink resource, a representation of a second uplink resource to the UE (2) and to the specific candidate access network node (3).
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: August 4, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Claes Tidestav, Rui Fan, Andres Reial, Johan Rune
  • Patent number: 10728808
    Abstract: The present disclosure relates to methods and arrangements for performing wireless device assisted handover form a source access node to a target access node. Performed in a wireless device, the method comprises performing (S31) one or more mobility measurements for corresponding candidate radio links and transmitting (S33) a first radio link measurement report, comprising the mobility measurements for a recommended target link, using a first radio link reporting mechanism to the source access node. When communication over a target link is not initiated under a predetermined condition, the method comprises transmitting a second radio link measurement report, for the one or more candidate radio links, on the recommended target link using a second radio link reporting mechanism different from the first radio link reporting mechanism.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: July 28, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Claes Tidestav, Icaro L. J. Da Silva, Qingyu Miao, Johan Rune, Zhang Zhang
  • Patent number: 10716042
    Abstract: Disclosed is a method performed by a network equipment (16) for controlling handover of a User Equipment, UE, (2) from a source network node (1) to a target network node (3a), the method comprises providing (S1), for the UE (2) and for the target network node (3a), information comprising a representation of a UE specific sequence, wherein the UE specific sequence is to be incorporated in a signal, said signal to be transmitted by the target network node (3a) to enable the UE to initiate a radio link establishment procedure with the target network node (3a) based on a reception of a signal comprising said UE specific sequence. Also disclosed are corresponding devices and computer programs. Further disclosed are cooperating methods, and corresponding devices and computer programs, performed by a UE (2) and a network node (3a) during handover of the UE (2) from the source network node (1) to the target network node.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: July 14, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Rui Fan, Andres Reial, Johan Rune, Claes Tidestav
  • Publication number: 20200221427
    Abstract: One way to increase robustness against beam pair link failure is by transmitting downlink (DL) control signaling (e.g., PDCCH) in more than one beam. That is, one way to mitigate BPLF is for the UE to receive DL control signaling over both a first BPL (e.g., active BPL) and a second BPL (e.g., monitored BPL) but with larger duty cycle for the second BPL compared to the first BPL. For example, the control signaling can be scheduled every slot on the first BPL and scheduled every Nth slot on the second BPL. In this way, in case the first BPL is blocked and the UE cannot decode the control signaling on the first BPL, the UE can receive control signaling transmitted on the second BPL.
    Type: Application
    Filed: November 3, 2017
    Publication date: July 9, 2020
    Applicant: Telefonaktiebolaget LM Ericsson (PUBL)
    Inventors: Andreas NILSSON, Mattias FRENNE, Stephen GRANT, Claes TIDESTAV
  • Publication number: 20200212989
    Abstract: The disclosure relates to devices, methods, and computer programs in mobile communications in order to enhance signal transmission. Specifically, it relates to methods in a network node. The method comprises receiving S1 a signal with at least a partly known content and applying S2 to the received signal at least one set of reception weights out of a plurality predefined sets of reception weights, wherein each set of reception weights is associated with at least one reception beam parameter describing a reception beam configuration. The method further comprises determining S3, based on one or more predetermined criteria, at least one set of reception weights out of the applied predefined sets of reception weights and generating S4 at least one set of transmission weights. Said at least one set of transmission weights is based on the at least one reception beam parameter The method further comprise transmitting S5 a signal using the generated at least one set of transmission weights.
    Type: Application
    Filed: April 27, 2017
    Publication date: July 2, 2020
    Inventors: Andres Reial, Rui Fan, Johan Rune, Claes Tidestav
  • Patent number: 10694438
    Abstract: An access node configures a user equipment, UE, to perform mobility management measurements using at least a first subset of beam-formed reference signals and to perform radio link monitoring, RLM, using at least some of the first subset of beam-formed reference signals used for the mobility management measurements. The access node transmits, in a first downlink signal having a series of subframes, a beam-formed reference signal in each of a plurality of subframes, where the beam-formed reference signals are transmitted in fewer than all of the subframes of the downlink signal. The UE receives, in the beam-formed downlink signal, the beam-formed reference signal in each of the plurality of subframes. The UE performs mobility management measurements using at least a first subset of the received beam-formed reference signals and performs RLM using at least some of the first subset of beam-formed reference signals used for the mobility management measurements.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: June 23, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Umut Ugurlu, Icaro L. J. da Silva, Rui Fan, Pradeepa Ramachandra, Claes Tidestav
  • Publication number: 20200178279
    Abstract: A beam management method is performed by a UE. In one embodiment the method includes: the UE receiving a first scheduling message regarding a first scheduled downlink transmission for the UE, wherein the first scheduling message comprises pointer information pointing to an object configured in the UE. As a result of receiving the first scheduling message: the UE obtains the pointer information from the first scheduling message; the UE determines a preferred receiver configuration that is currently associated with the obtained pointer information; and the UE uses the determined preferred receiver configuration to receive the first scheduled downlink transmission.
    Type: Application
    Filed: June 1, 2018
    Publication date: June 4, 2020
    Inventors: Mattias Frenne, Sebastian Faxér, Stephen Grant, Claes Tidestav
  • Patent number: 10666409
    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: Grant
    Filed: January 28, 2019
    Date of Patent: May 26, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    Inventors: Andres Reial, Andreas Cedergren, Claes Tidestav
  • Patent number: 10658750
    Abstract: The present disclosure relates to a wireless communication node (1) comprising at least one antenna arrangement (2, 2?, 2?). Each antenna arrangement (2, 2?, 2?) comprises at least one antenna port (3), at least two antenna elements (4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b) arranged for providing an antenna beam pattern (8), and a phase control arrangement (9, 9?, 9?) arranged to receive at least one input signal (10) via said antenna port (3) and to determine a plurality of intermediate signal components (11) from said input signal (10) by determining a first set of respective phase shifts (?1, ?2, 10 ?3, ?4; ?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8) for said input signal (3).
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: May 19, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Andreas Nilsson, Henrik Asplund, Martin Johansson, Claes Tidestav