Telefonaktiebolaget Lm Ericsson (publ)

Boris Dortschy

Erik Bengt Dahlman

Yezi Huang

Patryk Urban

Lei Bao

Aldebaro Klautau

Magnus Åström

Per-Erik Eriksson

Behrooz Makki

Fredrik Lindqvist

Elmar Trojer

Kim Laraqui

Luca Giorgi

Filippo Ponzini

Eduardo Lins De Medeiros

Jaume Rius I Riu

Gemma Vall-Llosera

Henrik Almeida

Marcio Murilo Conte Monteiro

Ronaldo Zampolo

Muhammad Ali Kazmi

Robert Baldemair

Jose Luis Pradas

Zhipeng Lin

Chenguang Lu

Attila Takács

Attila Báder

Thomas Chapman

Filip Barac

János Ladvánszky

Chunhui Zhang

Raimo Vuopionperä

Erik Rickard Söderqvist

Moraes Rodrigo Bastos

Rodrigo Bastos Moraes

Joao Marco Travassos Romano

Danilo Zanatta Filho

Ricardo Suyama

Murilo Bellezoni Loiola

Renato Lopes

Rafael Ferrari

Johelden Campos Bezerra

Evaldo Goncalves Pelaes

Maria Neiva Da Silva Fonseca Lindqvist

Raimo Vuopionpera

Adriana Rosa Dortschy

Ronaldo De Freitas Zampolo

Aldebaro Barreto Da Rocha Klautau

There is disclosed a method of operating a radio node () in a wireless communication network, the method comprising receiving signaling indicating at least two sets of random access preambles available to access the same cell and/or communication connection; transmitting a random access preamble from one of the sets of random access preambles. The disclosure also pertains to related methods and devices.

Random access for integrated access and backhaul nodes

A method, system and network node are disclosed. According to one or more embodiments, a parent network node configured to communicate with a network node is provided. The parent network node is configured to, and/or includes a radio interface and/or includes processing circuitry configured to: enable a first timing configuration, wherein the first timing configuration enables downlink transmission timing for the network node to be aligned with the downlink transmission timing of the parent network node; and based on the first timing configuration, switch to a second timing configuration, wherein the second timing configuration enables uplink transmission timing of the network node to be aligned with the downlink transmission timing of the network node.

IAB Case-6 timing and adjustment

There is provided a method for resource coordination in a first donor Integrated Access Backhaul (IAB) node connected to a first parent IAB node which is connected to an IAB node, the IAB node further being connected to a second parent IAB node which is connected to a second donor IAB node. The method comprises: sending, to the second donor IAB node, an indication of a first resource configuration for the IAB node, the first resource configuration determined by the first donor IAB node; receiving, from the second donor IAB node, a request for a second resource configuration for the IAB node; and determining a resource configuration for the IAB node based at least on one of the first resource configuration and the second resource configuration.

Methods and nodes for IAB inter-donor multi-parent resource coordination

Methods and apparatuses are disclosed for determining a muting pattern of a synchronization signal block (SSB) transmission for Integrated Access and Backhaul (IAB) node measurement. In one embodiment, a network node is configured to indicate a first muting pattern, the indication of the first muting pattern indicating at least one first synchronization signal block, SSB, transmission opportunity associated with SSB transmission configuration, STC, that is mutable by an Integrated Access Backhaul, IAB, node. In one embodiment, a network node is configured to determine a first muting pattern, the first muting pattern indicating at least one SSB transmission opportunity associated with a STC that is mutable by the network node; and mute the at least one first SSB transmission opportunity according to the determined first muting pattern.

Methods for determining a muting pattern of SSB transmission for IAB node measurement

A method, system, network nodes and apparatus are disclosed. According to one or more embodiments, a donor integrated access backhaul, IAB, node configured with a distributed unit, DU, for communicating with a wireless device and configured with a central unit, CU, for communicating with at least a first child IAB node is provided. The donor IAB node includes processing circuitry configured to indicate a determined first synchronization signaling blocks, SSB, transmission configuration, STC, for the at least first child IAB node, to the at least first child IAB node where the first STC is associated with inter-node measurement.

IAB-CU managed time-pattern configuration for IAB inter-node measurement

A method and network node having integrated access and backhaul (IAB) functionality are disclosed. According to one aspect, a network node determines information concerning at least one of: (i) an impairment of a first signal from a first integrated access backhaul node that is caused by a second signal from a second IAB node and (ii) an impairment of the second signal that is caused by the first signal. The network node further selects a multiplexing capability for the network node based at least in part on the determined information concerning at least one of the impairments and further multiplexes signals for the first and second IAB nodes using the selected multiplexing capability.

Method to determine the capability of simultaneous operation in IAB nodes

There is disclosed a method of operating an Integrated Access and Backhaul (IAB) node (, C, N) in a radio access network, the IAB node (, C, N) being connected to a first parent IAB node (, N, P) via a first backhaul link having a first timing, and being connected to a second parent IAB node (, N, P) via a second backhaul link having a second timing, the IAB node (, C, N) providing a communication link for access or backhaul, the communication link having a communication timing based on the first timing and the second timing. The disclosure also pertains to related methods and devices.

IAB downlink timing

Methods and apparatus are provided for determining timing of resources in an integrated access and backhaul, IAB, node (). In one example, a method (), is performed by an integrated access and backhaul, IAB, node (), the method comprising: determining (s) one or more timing offset for a time resource, the offset being in relation to a mobile termination, MT, and a distributed unit, DU, resource of the IAB node, and providing (s) to a parent IAB node (), information related to the one or more timing offset of the IAB node.

Integrated access and backhaul node resource timing

Embodiments include methods performed by an integrated access backhaul (JAB) node configured for operation in an IAB network. Such methods include receiving, from an upstream node in the IAB network, first timing offset information related to communications between the IAB node and the upstream node. Such methods include transmitting a downlink (DL) signal to one or more downstream nodes in the IAB network. The DL signal is transmitted according to a DL transmission timing determined from the following: the IAB node's DL reception timing of a DL signal received from the upstream node; and a second timing value determined based on a first function of the first timing offset information, when the first function of the first timing offset information is greater than a threshold. Other embodiments also include IAB nodes configured to perform such methods.

Integrated access backhaul (IAB) nodes with negative propagation delay indication

According to some embodiments, an integrated access and backhaul, IAB, network node comprises an IAB distributed unit, DU, and an IAB mobile termination, MT. A method performed by the IAB network node comprises receiving an availability indication at the IAB-MT, determining an IAB-DU soft resource availability based on the received availability indication, and transmitting or receiving according to the determined IAB-DU soft resource availability.

IAB soft resource availability determination

There is disclosed a method of operating an Integrated Access and Backhaul (IAB) node (, C, N) in a wireless communication network, the IAB node being in a communication link with a second IAB node using a signaling beam, the IAB node further being scheduled to perform beam sweeping with a plurality of synchronisation beams, one of the synchronisation beams corresponding to the signaling beam; wherein a synchronisation beam is scheduled to carry synchronisation signaling; and wherein the method comprises performing beam sweeping such that the synchronisation beam corresponding to the signaling beam carries information signaling replacing the synchronisation signaling at least in part. The disclosure also pertains to related methods and devices.

Synchronisation signaling for integrated access and backhaul nodes

There is disclosed a method of operating an Integrated Access and Backhaul (IAB) node in a radio access network, the IAB node being connected to a first parent IAB node via a first backhaul link, the method including communicating with one or more child nodes based on a downlink timing, the downlink timing being based on a function of one or more values of a first timing parameter, the values of the first timing parameter being indicated by corresponding first timing indicators received from the first parent IAB node and/or one or more values of a second timing parameter, the values of the second timing parameter being indicated by corresponding second timing indicators received from the first parent IAB node. The disclosure also pertains to related methods and devices.

A method, performed by a first node (). The method is for handling access to a communications network () in a multi-hop deployment. The first node receives (), from a fourth node (), information. The information indicates a recommendation on which node within radio range to connect to, out of a plurality of candidate parent nodes (). The plurality comprises a first set () and a second set () of candidate parent nodes. A third node () is enabled to be a donor node in the first set (). A sixth node () is enabled to be a donor node in the second set (). The first node also determines (), out of the plurality, a second node () to establish a connection with. The determining () is based on the received information. The first node then initiates () establishment of a connection or re-connection to the network via the second node (), as first-hop.

First node, fourth node and methods performed thereby for handling access to a communications network in a multi-hop deployment

A method, system and apparatus are disclosed. In one or more embodiments, a network node configured to communicate with a wireless device (WD) is provided. The network node configured to, and/or including a radio interface and/or including processing circuitry configured to: receive information indicating a timing offset (T′), determine transmission timing for downlink transmission based on the timing offset (T′) and at least one estimated timing value, and perform downlink transmission based on the determine transmission timing.

Timing control for integrated access and backhaul (IAB) node transmission

Embodiments include methods for downlink (DL) transmission by a network node in an integrated access backhaul (IAB) network. Such methods include receiving, from an upstream node in the network, first timing offset information related to communications between the network node and the upstream node. Such methods include transmitting a DL signal or channel, to one or more downstream nodes, based on a DL transmission timing for the network node. The DL transmission timing is determined from the network node's DL reception timing of signals or channels transmitted by the upstream node and a second function of the first timing offset information, which is determined based on a first function of the first timing offset information (when the first function is greater than a threshold) or on an alternate timing offset (when the first function is not greater than the threshold). Embodiments also include network nodes configured to perform such methods.

Growing community of inventors

Hägersten, Sweden

Boris Dortschy