Telefonaktiebolaget Lm Ericsson (publ)

Nira Dynamics Ab

Markus Drevö

Paul Schliwa-Bertling

Alexander Vesely

Angelo Centonza

Oumer Teyeb

Osman Nuri Can Yilmaz

Håkan Axelsson

Stefan Johansson

Elena Myhre

Rasmus Axén

Martin Israelsson

Kenneth Balck

Gunnar Mildh

Icaro L J Da Silva

Torsten Dudda

Helka-Liina Määttanen

Vesa Lehtovirta

Nianshan Shi

Sara Modarres Razavi

Lars-Bertil Olsson

Gino Masini

Matteo Fiorani

Wei Shen

Tobias Ahlström

Peter Lindskog

Daniel Henriksson

Luca Lunardi

Tahmineh Torabian Esfahani

Anders Malm

Anders Stenman

Gino Luca Masini

A method performed by a first network node for assisting a second network node in resuming of a User Equipment, UE, in inactive state into connected state in a Radio Access Network, RAN. The first network node obtains () a Local RAN Node Identifier associated with a Public Land Mobile Network, PLMN, RAN Node ID, identifying the first network node. The first network node sends () the Local RAN node Identifier and associated PLMN RAN Node ID to be obtainable by the second network node. The first network node suspends () the UE from connected state into inactive state and sends an identifier to the UE. The identifier comprises a UE Context ID and the associated Local RAN Node Identifier. The UE Context ID identifies the UE context associated with the UE. The UE Context ID, Local RAN Node Identifier and associated PLMN RAN Node ID will assist the second network node to obtain the UE Context for the resuming of the UE into connected state, wherein a connection is to be provided by the second network node.

Network nodes and methods in a radio access network for improving the RRC resume procedure

A network node () receives, over an interface between the network node () and a further network node (), a message comprising paired user equipment (UE) identifiers for UE identification over the interface to the network node () and further network node (), respectively. Responsive to determining that the identifier for UE identification to the network node () uniquely identifies a UE () to the network node (), the network node () validates the message irrespective of whether the identifier for UE identification to the further network node () uniquely identifies the UE () to the further network node ().

Handling application protocol identity for a UE-associated logical connection

The disclosure provides methods in a network node for a telecommunications network. In one method, the network node operates as a primary network node for a wireless terminal configured with dual connectivity, and the method comprises: receiving a message indicating that a secondary network node, which provides user plane connectivity for the wireless terminal, has no data to transmit to the wireless terminal; and based at least in part on the received message, configuring the wireless terminal in an inactive mode.

Methods and apparatus relating to inactive mode in a wireless communications network

A network node may be operated to support dual connectivity communication with a wireless terminal as a main network node in cooperation with a secondary network node. Dual connectivity communication with the wireless terminal may be provided in cooperation with the secondary network node. Responsive to deciding to suspend the dual connectivity communication with the wireless terminal, a connection release message may be transmitted to the wireless terminal, a suspension indication message may be transmitted to the secondary network node, and the dual connectivity communication with the wireless terminal may be suspended. While the dual connectivity communication is suspended, a page may be transmitted to the wireless terminal indicating arrival of downlink data for the wireless terminal and then a measurement report may be received from the wireless terminal providing radio link measurement information for radio links with the main network node and/or the secondary network node.

Methods providing dual connectivity communication and related network nodes and wireless terminals

Embodiments include methods, performed by a first radio network node (RNN) in a wireless network, to establish a communications interface with a second RNN in the wireless network. Such methods include receiving, from a third RNN in the wireless network, a Transport Network Layer (TNL) address associated with the second RNN. The first and third RNNs are configured for wireless communication with wireless devices via an E-UTRA radio access technology (RAT), and the second RNN is configured for wireless communication via an NR RAT. The third RNN can be a proxy node for discovery of TNL addresses associated with a plurality RNNs configured for wireless communication via the NR RAT. Such methods include establishing the communications interface with the second RNN based on the TNL address received from the third RNN. Other embodiments include complementary methods performed by a second RNN, and RNNs configured to perform such methods.

First radio network node (RNN), a second RNN and methods therein for establishing a communications interface between the first RNN and the second RNN

Methods may be provided to operate a network node supporting dual connectivity communication with a wireless terminal as a main network node in cooperation with a secondary network node. Dual connectivity communication with the wireless terminal may be provided in cooperation with the secondary network node. Responsive to deciding to suspend the dual connectivity communication with the wireless terminal, a connection release message may be transmitted to the wireless terminal, a suspension indication message may be transmitted to the secondary network node, the dual connectivity communication with the wireless terminal may be suspended. Related methods may be provided to operate secondary network nodes and wireless terminals.

Methods, central unit (A) and distributed unit (B) of a radio network node (), for handling a message received from a core node () for transmission to a wireless device (). An action is required by the radio network node if the message is not successfully delivered to the wireless device. The central unit (A) sends the message and an associated identifier I_msg to the distributed unit (B) and then receives feedback indicating whether the message has been successfully delivered to the wireless device or not. The central unit (A) performs the required action if the feedback does not confirm delivery of the message to the wireless device (). The required action may include sending a non-delivery indication to the core node ().

Methods, central unit and distributed unit of a radio network node, for handling a message for transmission to a wireless device

Methods and apparatus are provided for transferring management of one or more wireless devices from being managed by a first core network node, to instead be managed by a second core network node. The method comprises obtaining information identifying the one or more wireless devices, wherein the information comprises a first group identifier identifying a first group associated with the one or more wireless devices; and transferring context data from the first core network node to the second core network node, wherein the context data relates to the one or more wireless devices for use in managing the one or more wireless devices.

Methods and arrangements for transferring management of wireless devices between core network nodes of a wireless communication network

Method and nodes for enabling a wireless terminal configured with dual connectivity to enter an inactive mode

According to certain embodiments, a method by a first network node is provided for enabling paging of a user equipment (UE) in an inactive state. The method includes the first network node receiving a UE identity index value for the UE while the UE is in a connected state or during an initial context setup for the UE. The UE identity index value is stored. The method further includes transitioning the UE from the connected state to an inactive state and using the UE identity index value that was stored while the UE was in the connected state to initiate a transmission of a page to the UE in the inactive state.

Devices and methods for enabling matching paging occasions for a lightly connected wireless device

A first radio network node () and a method for establishing a communications interface between the first radio network node () and a second radio network node (). The first radio network node is configured to provide one or more Evolved Universal Terrestrial Radio Access (E-UTRA) resources and the second radio network node is configured to provide one or more New Radio (NR) resources. Further, the first and second radio network nodes are operating in a wireless communications network (). The first radio network node obtains a Transport Network Layer (TNL) address of the second radio network node from one out of a first core network node (); and another first radio network node () acting as a proxy. Furthermore, the first radio network node established a communications interface between the first and second radio network nodes based on the obtained TNL address.

A system and method for issuing a tire pressure deviation in a vehicle's tire is described. The system may include a calculation unit adapted to calculate temporally successive output signals indicative of a tire pressure condition in the vehicle's tire on the basis of temporally successive vehicle's signals. The system may also include a calibration unit adapted to determine a calibration value on the basis of a number of temporally successive output signals from the calculation unit. The system may also include a detection unit configured to detect a tire pressure deviation in the vehicle's tire on the basis of further temporally successive output signals from the calculation unit and the calibration value from the calibration unit, after determination of the calibration value by the calibration unit.

Method, system and computer program of detecting a tire pressure device

A method is described performed by a wireless communication network for recovering a public warning system when a radio network node comprising radio circuitry for communication with served user equipments, UEs, has been newly added or restarted in the network. The method comprises sending, by the radio network node to a core network node, information indicating that the radio network node has been restarted or added to the network, the information including one or more tracking area identifiers, TAI, identifying one or more tracking areas that the radio network node supports and/or a radio network node identifier, ID, identifying the radio network node in the communication network, and, in case the radio network node ID is sent but not the one or more TAIs, acquiring, by the core network node the one or more TAIs based on the received radio network node ID.

Methods, wireless communication networks and network nodes for recovering a public warning system

The present disclosure relates to a booster radio base station, booster RBS, defining a booster cell in a multilayer cell structure and a method, performed in a booster RBS, of controlling energy consumption. The method comprises a step of receiving (S) information from a macro RBS, defining a basic coverage providing macro cell, the information indicating a first power required to provide service to one or more wireless devices being served in an area at least in part overlapping the booster cell. The method also comprises the further steps of determining (S) a macro bitrate power measure based on the received information, the macro bitrate power measure reflecting a service provisioning of the one or more wireless devices from the macro RBS and determining (S) a booster bitrate power measure, the booster bitrate power measure reflecting a service provisioning of the one or more wireless devices from the booster RBS. An energy consumption state is selected (S) from two or more energy consumption states for the booster RBS based on a comparison between the booster bitrate power measure and the macro bitrate power measure. The disclosure relates to a method, performed in a macro radio base station, macro RBS, defining a basic coverage providing macro cell, of controlling energy consumption of a booster radio base station. The disclosure also relates to a macro radio base station.

Method of controlling booster cell energy consumption

A method performed by a source network node for handover of a wireless communication device in a first wireless communications network using a first RAT is provided. The handover is to be performed from the source network node to a target network node. The wireless communication device is configured to communicate with the source network node directly and to communicate with the source network node via a radio access node in a second wireless communications network using a second RAT. The source network node provides () the target network node with information about parameters relating to a communication between the wireless communication device and the source network node via the radio access node. The source network node receives () a feedback from the target network node. The feedback comprises an indication of whether or not the radio access node was able to keep a context of the wireless communication device in the second wireless communications network. The context comprises an identity of the wireless communication device in the second wireless communications network, and information required to interact with the wireless device in the second wireless communications network.

Growing community of inventors

Linköping, Sweden

Markus Drevö