Patents by Inventor Icaro L. J. da Silva

Icaro L. J. da Silva 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).

  • Handling of inactive parameters upon release and re-suspend
    Patent number: 11729855
    Abstract: Systems and methods are disclosed herein for updating stored User Equipment (UE) context information upon re-suspend of the UE in response to a resume request from the UE. In some embodiments, a method in a UE comprises transmitting a Radio Resource Control (RRC) resume request message and, in response to the RRC resume request message, receiving an RRC connection release message with an indication for suspend. The method further comprises, in response to receiving the RRC connection release message with an indication for suspend, replacing information in a stored Access Stratum (AS) context of the UE with new information.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: August 15, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Gunnar Mildh, Icaro L. J. da Silva
  • Link switch in a wireless communication system
    Patent number: 11729681
    Abstract: A wireless communication device is configured for use in a wireless communication system. The device in this regard is configured to receive a command that commands the device to perform a link switch from a source link to a target link responsive to fulfillment of a condition. The command may indicate a target link configuration relative to a source link configuration. The device is also configured to store information from which the target link configuration indicated by the command is determinable irrespective of any change to the source link configuration occurring after receipt of the command. In some embodiments, the device is configured to, responsive to fulfillment of the condition, perform a link switch from the source link to the target link using the target link configuration as determined from the stored information.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: August 15, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Riikka Susitaival, Icaro L. J. Da Silva, Janne Peisa, Edgar Ramos, Henning Wiemann
  • Indicating RAN notification area update (RNAU) in RRC_INACTIVE state
    Patent number: 11723107
    Abstract: Embodiments include methods in a wireless device. Such methods include, while the wireless device is in a Radio Resource Control (RRC) inactive state with respect to a wireless communication network, determining that a Radio Access Network Notification Area Update (RNAU) is needed. Such methods include evaluating whether there is any cause, other than the determined need for the RNAU, for resuming an RRC connected state with the wireless communication network and transmitting, to the wireless communication network, an RRC Resume Request message comprising a cause indicator indicating a cause for resuming the RRC connected state. The cause indicator indicates an RNAU when there is no cause for resuming the RRC connected state other than the determined need for the RNAU and otherwise indicates a cause other than an RNAU. Other embodiments include wireless devices configured to perform such methods and computer-readable media that store instructions embodying such methods.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: August 8, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Christofer Lindheimer, Icaro L. J. Da Silva, Gunnar Mildh, Paul Schliwa-Bertling
  • Release cause for transition from connected state
    Patent number: 11723108
    Abstract: Systems, methods, and apparatus for handling communications relating to suspending a user equipment in a radio access network (RAN) are disclosed. An example method includes the user equipment receiving a radio resource control (RRC) release message from a network node. The user equipment determines that the RRC release message includes a suspend configuration field. The user equipment applies delta signalling corresponding to a suspend configuration indicated by the suspend configuration field and transitions to an inactive state.
    Type: Grant
    Filed: March 25, 2022
    Date of Patent: August 8, 2023
    Assignee: TELEFON AKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Christofer Lindheimer, Malik Wahaj Arshad, Icaro L. J. da Silva, Gunnar Mildh, Riikka Susitaival
  • Method, apparatus, and computer-readable medium for providing synchronization signal block (SSB) transmission pattern
    Patent number: 11716640
    Abstract: Embodiments include methods performed by a second network node in a wireless communications network that includes a first network node, the second network node, and a third network node. Such methods include receiving, from the first network node, a configuration comprising a pattern indicative of whether or not each of a plurality of Synchronization Signal Block (SSB) transmissions, that are configured based on a nominal timing, are actually transmitted by the third network node according to the nominal timing. Such methods include, based on the received configuration, managing transmission and/or reception configurations for one or more of the following: one or more cells served by the second network node; and one or more UEs served by the second network node via the one or more cells. Other embodiments include second network nodes configured to perform such methods.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: August 1, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Iana Siomina, Icaro L. J. Da Silva, Helka-Liina Määttänen
  • MEASUREMENT REPORTING CONFIGURATION FOR AIDING THE SORTING OF BEAM/CELL LEVEL MEASUREMENTS
    Publication number: 20230224751
    Abstract: According to certain embodiments, a method performed by a wireless device (110) for measurement reporting includes sorting a plurality of measurements for a measurement report based on at least one measurement quantity. The method further includes reporting, to a network node (160), measurement information selected from the plurality of measurements sorted based on the at least one measurement quantity.
    Type: Application
    Filed: March 8, 2023
    Publication date: July 13, 2023
    Inventors: Icaro L.J. Da Silva, Pradeepa Ramachandra, Oumer Teyeb
  • RADIO NETWORK NODE, WIRELESS DEVICE, AND METHODS PERFORMED IN A WIRELESS COMMUNICATION NETWORK
    Publication number: 20230224774
    Abstract: Embodiments herein relate, e.g., to a method performed by a wireless device for handling communication in a wireless communication network. The wireless device transmits to a radio network node, a first preamble associated with a selected downlink beam. The wireless device further monitors for a random access response, RAR, in a first RAR reception window and when the RAR is not received in the first RAR reception window, monitors for the RAR in a second RAR reception window of a different beam or to transmit, to the radio network node, a second preamble associated with a second beam wherein the first preamble is associated with a channel state information reference signal and the second preamble is associated with a synchronization signal block.
    Type: Application
    Filed: January 3, 2023
    Publication date: July 13, 2023
    Inventors: Icaro L.J. DA SILVA, Patrik RUGELAND, Johan RUNE
  • METHOD AND DEVICE FOR UPDATING A WAIT TIMER
    Publication number: 20230225007
    Abstract: Methods and apparatuses are disclosed for updating a wait timer as a result of receiving one of a release message and a suspend message and/or configuring a wireless device (WD) to update a wait timer by determining the one of the release message and the suspend message to be communicated to the WD.
    Type: Application
    Filed: March 21, 2023
    Publication date: July 13, 2023
    Inventors: Gunnar MILDH, Icaro L.J. DA SILVA
  • Network Architecture, Methods, and Devices for a Wireless Communications Network
    Publication number: 20230224059
    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: January 5, 2023
    Publication date: July 13, 2023
    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
  • Inter-RAT (radio access technology) reestablishment enhancements in multi-RAT dual connectivity (MR-DC)
    Patent number: 11700661
    Abstract: Embodiments include methods for a target node to establish a connection with a user equipment (UE) operating in dual connectivity (DC) with a PCell utilizing a first radio access technology (RAT) and with a PSCell utilizing a second RAT. Embodiments include receiving, from the UE, a re-establishment request message comprising parameters associated with the PSCell, a first message authentication code (MAC), and an indication of the UE's selection of a target cell served by the target node as a replacement for the PCell. The target cell utilizes the second RAT. Embodiments include verifying the message integrity based on the first MAC, and determining a full UE context based on the plurality of parameters associated with the PSCell and on a successful verification of the message integrity. Embodiments include establishing a connection with the UE based on the full UE context, whereby the target cell serves as a PCell for DC.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: July 11, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Oumer Teyeb, Patrik Rugeland, Icaro L. J. Da Silva
  • Replay protection for resume procedure
    Patent number: 11696127
    Abstract: A communication system for resuming a connection comprises a user equipment (UE) and network nodes. A first network node is configured to prepopulate a UE context, and send, to a second network node, the UE context. The second network node is configured to receive, from the first network node, the UE context, and send, to a UE, a resume request message including a freshness parameter and the UE context. The UE is configured to receive, from the second network node, a resume request message including the freshness parameter and the UE context, generate an authentication token based on the freshness parameter and the UE context, and send, to the second network node, a resume response message including the authentication token. The communication system provides a freshness parameter and a prepopulated UE context to secure and facilitate resume procedure against replay attacks.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: July 4, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Magnus Stattin, Gunnar Mildh, Dung Pham Van, Paul Schliwa-Bertling, Icaro L. J. Da Silva, Karl Norrman, Oscar Ohlsson
  • Triggered measurement reporting for wireless communications
    Patent number: 11696194
    Abstract: A method is performed by a wireless device in a network. The wireless device detects a triggering event related to a procedure for a handover from a source network node to a target network node in which the wireless device relies on downlink beam selection. The wireless device determines measurement information to include in a message to send to the target network node. The measurement information is obtained by measuring one or more beams according to at least one of a radio link management configuration, a beam management configuration, and a measurement configuration. In response to detecting the triggering event, the determined measurement information in the message is sent to the target network node.
    Type: Grant
    Filed: August 2, 2022
    Date of Patent: July 4, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Icaro L. J. da Silva, Helka-Liina Määttanen, Pradeepa Ramachandra
  • OPTIMIZED RECONFIGURATION OF RLM AND BEAM MONITORING PARAMETERS
    Publication number: 20230198842
    Abstract: A method by a wireless device is provided for optimized reconfiguration of radio link monitoring (RLM) and beam monitoring. The method includes receiving, from a first network node, a first message comprising at least one RLM parameter. A second message indicating activation of the at least one RLM parameter associated with the first message is received. The second message is a lower layer signal compared to the first message.
    Type: Application
    Filed: February 13, 2023
    Publication date: June 22, 2023
    Inventors: Icaro L. J. DA SILVA, Helka-Liina MAATTANEN, Claes TIDESTAV
  • Keeping/Changing MR-DC Upon Conditional Handover (CHO)
    Publication number: 20230199577
    Abstract: Techniques for conditional reconfiguration in a multi-connectivity scenario. In an example method, a first network node, configured to operate as a master node, MN, for multi-connectivity operation of a wireless device along with a second network node operating as a secondary node, SN, for the wireless device, determines (810) to configure the wireless device with a conditional reconfiguration and transmits (820) a handover request message to a third network node, the handover request message including an indication that the handover request message is for conditional handover. The first network node receives (830) an acknowledgment of the handover request message and, in response, delays (840) transmission of a release message to the second network node until the first network node receives an indication that the conditional handover is executed.
    Type: Application
    Filed: May 20, 2021
    Publication date: June 22, 2023
    Inventors: Icaro L.J. Da Silva, Julien Muller
  • First network node, second network node, wireless device and methods performed thereby for handling a link switch
    Patent number: 11683731
    Abstract: A method, performed by a network node. The method is for handling a switch of a wireless device from a source to a target link. The network node and the device operate in a wireless communications network. Given a configuration of the target link indicating resources to perform random access to the network node during the switch, the network node, transmits, prior to the switch, an indication to the device. The indication indicates an update to the configuration. The network node changes the configuration of the target link, based on the update. The changing is performed only after receiving a confirmation of at least one of: i) from the device, that the device has received the indication, and ii) from a first network node operating in the wireless communications network, that it has transmitted the indication to the device.
    Type: Grant
    Filed: July 4, 2019
    Date of Patent: June 20, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Sakib Bin Redhwan, Pradeepa Ramachandra, Reza Moosavi, Nicklas Johansson, Icaro L. J. Da Silva, Sofia Ek
  • Dynamic change of measurement gaps
    Patent number: 11683708
    Abstract: The invention refers to a method in a user equipment, UE, for a measurement gap pattern configuration including receiving a configuration information indicative of a measurement gap pattern configuration, and a bandwidth part, BW, configuration, determining an association between measurement gap patterns and BW parts, receiving a message to change the active BW part to one of the configured BW parts, and changing the measurement gap pattern as a function of the corresponding BW part and the association; the invention further refers to a corresponding method in a network node; to corresponding UE, a corresponding network node, and computer programs.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: June 20, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Christopher Callender, Icaro L. J. Da Silva, Rui Fan, Muhammad Kazmi, Helka-Liina Määttanen, Iana Siomina, Henning Wiemann
  • User equipment, network node and methods in a wireless communications network
    Patent number: 11678236
    Abstract: Methods, User Equipment (UE), and source network node for resuming a Radio Resource Control (RRC) connection to a target cell in a wireless communications network. The UE generates a security token using a set of input parameters and sends a resuming request with the security token to a target network node serving the target cell. When receiving the resuming request, the source network node generates a security token using a set of input parameters in the same manner as the UE. If the received security token is successfully verified when compared with the generated security token, the source network node provides to the target network node a UE context of the UE, to enable the target network node to resume the RRC connection.
    Type: Grant
    Filed: June 20, 2022
    Date of Patent: June 13, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Oscar Ohlsson, Icaro L. J. Da Silva, Gunnar Mildh, Magnus Stattin
  • Methods and Apparatuses for Early Data Forwarding in Conditional Handover of a UE in Multi-Connectivity
    Publication number: 20230180065
    Abstract: Disclosed methods and apparatuses advantageously provide for early data forwarding in conditional handover of a User Equipment (UE) (14) in multi-connectivity scenarios. Early data forwarding includes data from secondary nodes (12) of the multi-connectivity.
    Type: Application
    Filed: May 20, 2021
    Publication date: June 8, 2023
    Inventors: Icaro L.J. Da Silva, Julien Muller
  • Method and device for random access for beam failure recovery
    Patent number: 11664875
    Abstract: A method for random access for beam failure recovery. In the method, a random access configuration for the beam failure recovery is received. In the event of a beam failure, a random access procedure is performed according to the random access configuration.
    Type: Grant
    Filed: August 18, 2022
    Date of Patent: May 30, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Rui Fan, Icaro L. J. Da Silva, Helka-Liina Määttanen
  • Handling of periodic radio access network (RAN) based notification area (RNA) timer
    Patent number: 11659615
    Abstract: A method and wireless device for handling a periodic RNA update timer are disclosed. A method is implemented in a wireless device (WD) for stopping an update timer based on a condition including that the WD: receives an RRC Setup message triggering transition of the WD to an RRC_CONNECTED state in response to an RRC Resume request message; receives an RRC Suspend message indicating that the WD is to stay in an RRC_INACTIVE state in response to an RRC Resume Request message; receives an RRC Release message triggering transition of the WD to an RRC_IDLE state in response to an RRC Resume Request message; fails to receive an RRC Resume message, RRC Suspend message or an RRC Release message after sending an RRC Resume Request message; or the WD enters the RRC_IDLE state from the RRC-INACTIVE state without transitioning through the RRC_CONNECTED state.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: May 23, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Gunnar Mildh, Icaro L. J. Da Silva