Patents Assigned to ERICSSON
  • Patent number: 12267516
    Abstract: A method decodes one or more code words in a loop that is run N times by decoding an indication of whether a picture is a long-term picture or not and deriving a positive integer K[i]>0 for each long-term picture. An indicator value V[i] is derived for each long-term picture by subtracting the value of the positive integer K[i] from a picture indicator value P of the current picture. For each of the indicator values V[i], the indicator value V[i] is compared with values associated with pictures stored in the DPB. The method keeps the pictures stored in the DPB marked as short-term or long-term for which there is a match with one of the indicator values V[i] in the DPB as long-term pictures, and marks long-term pictures for which there is no match with any indicator value V[i] as unused for reference in the DPB.
    Type: Grant
    Filed: July 28, 2023
    Date of Patent: April 1, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Rickard Sjöberg, Mitra Damghanian, Martin Pettersson
  • Patent number: 12267684
    Abstract: A communication system including a host computer is provided herein. The host computer may include processing circuitry configured to provide user data and a communication interface configured to forward the user data to a cellular network for transmission to a user equipment (UE). The cellular network comprises a base station having a radio interface and base station processing circuitry. The base station processing circuitry configured to store a previously active security context for the UE, receive from the UE an RRCResumeRequest message including a security token, generate a temporary security context for the UE, use the temporary security context to verify the security token, send an RRC message to the UE, if no response to the RRC message is received from the UE, discard the temporary security context and retrieve the previously active security context. Thereafter, the base station transmits the user data for a host application.
    Type: Grant
    Filed: December 5, 2023
    Date of Patent: April 1, 2025
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Gunnar Mildh, Icaro L. J. da Silva
  • Patent number: 12267711
    Abstract: A method, system and apparatus are disclosed for switching control channel monitoring of search space set group. According to one or more embodiments, a network node is provided. The network node includes processing circuitry configured to: configure a wireless device with at least two search space set groups, SSSGs; configure the wireless device to switch control channel monitoring between the at least two SSSGs; and optionally cause transmission of signaling on the control channel in accordance with the configured switching of the control channel monitoring.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: April 1, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Hazhir Shokri Razaghi, Havish Koorapaty, Jung-Fu Cheng, Stephen Grant, Reem Karaki
  • Patent number: 12267797
    Abstract: In some embodiments, a method performed by a wireless device comprises: obtaining a timing advance (TA) value for uplink transmissions; receiving a grant for a radio resource control (RRC) inactive mode uplink transmission; measuring a reference signal associated with each beam of a plurality of beams at a first time; selecting a first beam based on the measured reference signals; measuring a reference signal associated with each beam of a plurality of beams at a second time in preparation for the RRC inactive mode uplink transmission; selecting a second beam for which the measuring was performed at the second time; and when the first selected beam is the same as the second selected beam and the reference signal for the first selected beam is within a threshold value of the reference signal for the second selected beam, transmitting the RRC inactive mode uplink transmission using the obtained TA.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: April 1, 2025
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Olof Liberg, Sandeep Narayanan Kadan Veedu, Yi-Ju Chen
  • Patent number: 12267796
    Abstract: A method performed by a first base station for positioning in a cellular communication system includes receiving, at the first base station, a signal transmitted by a second base station and estimating a Time of Arrival (TOA) of the received signal at the first base station according to a clock of the first base station. The method further includes determining a delta value that is a function of an amount of time between the TOA of the received signal at the first base station and a time reference at the first base station and performing either, (a) providing the delta value to a positioning estimation entity within the cellular communications system or (b) using the delta value at the first base station to reduce a time synchronization error between the first base station and the second base station, or (c) passing the delta value to a User Equipment (UE).
    Type: Grant
    Filed: October 10, 2020
    Date of Patent: April 1, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Satyam Dwivedi, Fredrik Gunnarsson, Erik Dahlman, Erik Stare
  • Patent number: 12267179
    Abstract: A method of and a Session Management Function, SMF, for provisioning processing rules for user traffic at a User Plane Function, UPF, in a core network of a telecommunication network are disclosed. The core network comprises an Access and Mobility Management Function, AMF and a Policy Control Function, PCF. The SMF first transmits to the PCF a request for obtaining processing rules for user traffic; the SMF then receives from the PCF processing rules enabling at least one of a Uniform Resource Identifier, URI, level processing policy and a Server Name Indication, SNI, level processing policy for the user traffic and provision the received processing rules with the UPF. The UPF can then process user traffic based on the provisioned processing rules, differentiating the user traffic at the more detailed URI and/or SNI level.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: April 1, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Erik Wikström, Carlos Jimenez Cordon, Miguel Angel Muñoz De La Torre Alonso
  • Patent number: 12267737
    Abstract: A wireless device configured to acquire network support information associated with a neighbor cell, wherein the network support information indicates that the neighbor cell supports a Stand-Alone (SA) mode of operation and/or a Non-Stand-Alone (NSA) mode of operation; and transmit to a serving network node a report comprising identification information associated with the neighbour cell and the network support information indicating that the neighbor cell supports a SA mode of operation and/or a NSA mode of operation. A serving network node configured to receive a report transmitted by a wireless device, wherein the report comprises identification information associated with the neighbor cell and network support information indicating that the neighbor cell supports a Stand-Alone (SA) mode of operation and/or a Non-Stand-Alone (NSA) mode of operation; and determine, based on the report, a type of interface to establish between the serving network node and the neighbor network node.
    Type: Grant
    Filed: October 17, 2023
    Date of Patent: April 1, 2025
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Parisa Pakniat, Icaro L. J. Da Silva, Gunnar Mildh
  • Patent number: 12267081
    Abstract: An apparatus is disclosed for provision of an indication of an angular difference between first and second input signals. The apparatus comprises a phase frequency detector (PFD) configured to receive the first and second input signals and to provide first and second outputs based on the first and second input signals. A difference in pulse length between signals provided at the first and second outputs is indicative of the phase difference between the first and second input signals. The apparatus also comprises first and second time-to-digital converters (TDCs) each configured to receive one of the signals provided by the PFD and to provide a corresponding digital pulse length representation. Each of the TDCs is a pulse length modifying TDC, wherein pulse length modification may comprise pulse length shrinking or pulse length extension.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: April 1, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mohammed Abdulaziz, Henrik Sjöland, Tony Påhlsson
  • Patent number: 12267785
    Abstract: Embodiments of a method in an access node of a wireless communication network pre-emptively reduces intercell interference, ICI, in neighboring cells. The access node is configured to transmit downlink traffic to a plurality of user equipments, UEs, in a coverage area of the access node. At least one unscheduled physical resource block, PRB, is detected. Downlink traffic across is diluted across the at least one unscheduled PRB. Finally, transmission power of scheduled PRBs is reduced.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: April 1, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Chunhui Liu, Qi Zhang, Yuan Dong
  • Patent number: 12267890
    Abstract: A method is implemented by a network device to establish secure communication over a maritime mesh network. The network device is in a local network of a communication system of a vessel in the maritime mesh network. The method includes receiving a communication session request from a local user device to access a remote service, determining whether the remote service is accessible via a terrestrial network available over the maritime mesh network, and establishing a secure tunnel between the network device and the terrestrial network for the communication session, in response to determining the remote service is accessible via the terrestrial network.
    Type: Grant
    Filed: November 23, 2019
    Date of Patent: April 1, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Serdar Sahin, Lars Pedersen, Yanping Dang
  • Patent number: 12267130
    Abstract: Embodiments herein disclose a method performed by a network node for handling communication in a wireless communication network. The network node selects a precoder based on mutual information related to channel capacity of a channel, wherein the mutual information is computed in a closed-form computation within a set interval. The network node transmits data over the channel using the selected precoder.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: April 1, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventor: Maksym Girnyk
  • Patent number: 12267808
    Abstract: A method performed by a first network function. The method comprises receiving from a second network function a first message indicating that a core network needs to signal with a wireless device in delivering a service to said wireless device. The service is delivered via a network slice. The method also comprises determining an identifier of the network slice associated with the service and determining a connection management state, CM-state, of the wireless device. Further, the method comprises sending a second message in response to said first message, wherein said second message is based on said CM-state and said identifier of the network slice associated with the service.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: April 1, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Patrick Maguire
  • Patent number: 12267859
    Abstract: Embodiments of a method in a network node for resource allocation are disclosed. The method includes selecting a user set of wireless devices from available predefined user sets; estimating expected data rates for the wireless devices in the selected user set for a selected radio resource; computing a weighted sum of the expected rates of the wireless devices in the user set; and assigning a given the selected radio resource to the user set with the highest weighted sum. A criterion for dynamic resource allocation that can opportunistically exploit the channel variations towards achieving the optimal trade-off between the network capacity and wireless device-fairness is also disclosed.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: April 1, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (Publ
    Inventors: Chandra Bontu, Jagadish Ghimire, Amr El-Keyi
  • Patent number: 12267672
    Abstract: A method (300) for registering with a serving network (104). The method is performed by a UE (102). The method includes the UE transmitting (s302) to the serving network (104) a message (212) indicating a UE capability that is relevant for a home network (106), wherein the 5 serving network (104) is configured to send to the home network (106) a message (216) indicating the UE capability.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: April 1, 2025
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Jari Arkko, Vesa Lehtovirta
  • Patent number: 12267511
    Abstract: There are provided mechanisms performed by a video decoder. The method comprises obtaining a network abstraction layer (NAL) unit having a particular NAL unit type. The obtained NAL unit comprises a NAL unit header. The NAL unit header of the obtained NAL unit comprises at least a first part comprising N bits. The method comprises obtaining NAL unit header (NUH) extension information that indicates whether or not the NAL unit header further comprises a second part that comprises M bits. The method comprises determining, based on the NUH extension information, a NAL unit type value specifying the particular NAL unit type of the obtained NAL unit.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: April 1, 2025
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Martin Pettersson, Rickard Sjöberg, Mitra Damghanian
  • Patent number: 12267740
    Abstract: A method of selecting a set of beams to be monitored by a User Equipment (UE) in a telecommunication network comprises the steps of receiving measurement data comprising measurements of qualities of beams observed by said UE, where said beams originate from at least one access node (AN) to the UE and from at least one other AN to the UE; retrieving at least one measurement data from a particular UE that matches the received measurement data, where the historical database comprises historical measurement data comprising measurements of qualities of beams observed by UE's in said telecommunication network over time; selecting a set of beams to be monitored by said UE based on the retrieved measurement data and based on subsequent measurement data of the particular UE over time in the historical database; and transmitting said selected set of beams to be monitored to said UE.
    Type: Grant
    Filed: July 3, 2023
    Date of Patent: April 1, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Igor Moaco Guerreiro, Maria Fresia, Victor Farias Monteiro
  • Patent number: 12267835
    Abstract: Systems and methods are provided for allocation of acknowledgement resources. In an embodiment, a method of transmitting control information to a communication network may be implemented in a wireless device. The method may include being configured with at least two physical uplink control channel (PUCCH) opportunities, each of the at least two PUCCH opportunities identifying uplink resources to be used for transmitting control information to the communication network. The method may further include receiving an acknowledgement resource indication (ARI) indicating one of the configured at least two PUCCH opportunities to be used for transmitting control information associated with the DL transmission.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: April 1, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Robert Baldemair, Erik Dahlman, Sorour Falahati, Daniel Larsson, Stefan Parkvall
  • Patent number: 12267803
    Abstract: An example method includes a method performed by a wireless device for sending a message relating to location services. The method includes establishing a user plane connection with a location management function, and sending a message relating to location services to the location management function using the user plane connection.
    Type: Grant
    Filed: October 13, 2020
    Date of Patent: April 1, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Ritesh Shreevastav, Åke Busin, Qian Chen
  • Patent number: 12267795
    Abstract: Embodiments of the invention include methods, systems, and computer programs to determine synchronization signal (SS) block mapping pattern in a wireless network. In one embodiment, a method is implemented in a terminal device for synchronization signal block (SSB) search in a wireless network, the method includes receiving, by the terminal device from a network device, a message containing synchronization signal block (SSB) information indicating a synchronization signal (SS) block subcarrier spacing (SCS) option, where the SS block SCS option maps to a plurality of SS block pattern candidates. The method continues with obtaining SSB candidate locations, using a SS block pattern determination from the plurality of SS block pattern candidates for the terminal device determined.
    Type: Grant
    Filed: January 12, 2024
    Date of Patent: April 1, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Zhipeng Lin, Asbjörn Grövlen, Fredrik Ovesjö, Robert Baldemair, Claes Tidestav
  • Patent number: 12267772
    Abstract: Embodiments of the present disclosure relate to a method and an apparatus for managing network slice for terminal device. A first aspect of the present disclosure provides a method performed at a server function, comprising: determining to change a network slice for a terminal device; and transmitting, to an exposure function, a request to change the network slice for the terminal device. According to embodiments of the present disclosure, a server may be able to change the network slice for a terminal device.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: April 1, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Cheng Wang, Ping Chen, Xiao Li, Huiwei Zheng