Abstract: A method performed by a first node. The first node operates in a communications network. The first node determines, based on a header of a packet, a first number of hops. The first number of hops are the hops the packet has to traverse in the communications network to reach a second node in the communications network. The header of the packet indicates a second number of hops between the second node and a third node in the communications network in a first path. The first node obtains a wired backhaul connection to a core network of the communications network from the third node. The first node then initiates routing the packet towards the second node based on the determined first number of hops.

Abstract: A method performed by an IRU of a base station system, the base station system comprising the IRU, a BBU connected to the IRU, and a first RH connected to the IRU via a packet data network. The first RH is arranged for wireless transmission in RF of a plurality of antenna carriers to UEs. The method comprises receiving, from the BBU, a plurality of first digital representations of the plurality of antenna carriers of the first RH, each first digital representation representing one antenna carrier, the plurality of first digital representations being received in a baseband frequency range, frequency multiplexing the plurality of first digital representations of the plurality of antenna carriers into a second digital representation over a first bandwidth, and transmitting the second digital representation to the first RH.

Abstract: Exemplary embodiments include methods and/or procedures performed by a first intermediate node of a multi-hop, integrated access backhaul communication network. Embodiments include receiving a data packet destined for a target node of the communication network, the first intermediate node being configured to communicate with the target node via a second intermediate node of the network. Embodiments include determining an address for the data packet based on a mapping function associated with the target node, and forming a packet header, including the previously-determined address, for the data packet. Forming the packet header can include at least one of the following operations: excluding one or more higher-layer protocol headers related to the second intermediate node; and incorporating without modification a portion, associated with the target node, of an existing header of the data packet.

Abstract: Exemplary embodiments include methods and/or procedures for Packet Data Convergence Protocol, PDCP, processing performed in a network node of a multi-hop, integrated access backhaul, IAB, communication network. Exemplary methods can include receiving (610) a configuration that includes a first characteristic associated with at least one of the following: the node and data packets received by the network node. Exemplary methods can also include receiving (620) a data packet having one or more packet characteristics, and determining (630) if there is a match between the one or more packet characteristics and the first characteristic. Exemplary methods can also include enabling or disabling (640) a first PDCP processing operation on the data packet based on the result of the determination. Other exemplary embodiments include network nodes configured and/or arranged to perform operations corresponding to the exemplary methods and/or procedures.

Abstract: A method and transition device for enabling communication of data between a remote radio unit and a central baseband unit in a wireless network. When detecting a first interface configuration used by the remote radio unit and a second interface configuration used by the baseband unit, the transition device configures interface functions, based on the first and second interface configurations. The interface functions are selected from a set of predefined interface functions associated with different interface configurations. The transition device then establishes a data flow between the remote radio unit and the central baseband unit over the transition device, and performs conversion between the first interface configuration and the second interface configuration for data communicated in the data flow, using the selected interface functions.

Abstract: Disclosed is a method performed by an IRU (210) of a base station system (200), the base station system comprising the IRU (210), a BBU (230) connected to the IRU (210), and a first RH (221) connected to the IRU (210) via a packet data network (240). The first RH (221) is arranged for wireless transmission in RF of a plurality of antenna carriers to UEs (250). The method comprises receiving, from the BBU (230), a plurality of first digital representations of the plurality of antenna carriers of the first RH (221), each first digital representation representing one antenna carrier, the plurality of first digital representations being received in a baseband frequency range, frequency multiplexing the plurality of first digital representations of the plurality of antenna carriers into a second digital representation over a first bandwidth, and transmitting the second digital representation to the first RH (221).

Abstract: It is provided a communication device comprising: a first wired connection interface for communicating backhaul signals with more central equipment over wired connection; a mobile termination device configured to transmit and receive the backhaul signals, wherein the backhaul signals conform to a cellular mobile communication standard; a radio base station, connected to the mobile termination device, wherein the radio base station is configured to transmit and receive access signals, conforming to a cellular mobile communication standard, to and from at least one local device, the access signals containing same payload data as corresponding backhaul signals; and at least one antenna port for communicating the access signals over the air.

Abstract: A method and transition device for enabling communication of data between a remote radio unit and a central baseband unit in a wireless network. When detecting a first interface configuration used by the remote radio unit and a second interface configuration used by the baseband unit, the transition device configures interface functions, based on the first and second interface configurations. The interface functions are selected from a set of predefined interface functions associated with different interface configurations. The transition device then establishes a data flow between the remote radio unit and the central baseband unit over the transition device, and performs conversion between the first interface configuration and the second interface configuration for data communicated in the data flow, using the selected interface functions.

Abstract: According to some embodiments, a method performed by a wireless device of communicating with more than one base station comprises: obtaining a first timing advance for wireless transmission with a first base station; obtaining a second timing advance for wireless transmission with a second base station, the second timing advance different than the first timing advance; transmitting a first wireless transmission to the first base station using the first timing advance; transmitting a second wireless transmission to the second base station using the second timing advance. The first wireless transmission and the second wireless transmission are scheduled so that a guard interval occurs and the first and second wireless transmissions do not overlap in time.

Abstract: A method for transmit timing adjustment by a second network node includes obtaining an indication of beam link failure of a current beam that is used for ongoing communication with a first network node. The method further includes switching over to a backup beam of the current beam for continuing the ongoing communication with the first network node, and adjusting transmit timing for transmitting a signal as part of the ongoing communication in the backup beam based on earlier communicated timing information with the first network node before making any transmission of the signal on the backup beam.

Abstract: There is disclosed a method of operating a power-controlled radio node (C, 100) in a radio access network, the power-controlled radio node (C, 100) being in connection with a first Integrated Access and Backhaul, IAB, node (200, N1, N2) via a first communication link and being in connection with a second IAB node (200, N1, N2) via a second communication link, the method comprising transmitting uplink signaling on the first communication link based on power control information pertaining to the second communication link. The disclosure also pertains to related methods and devices.

Abstract: There is disclosed a method of operating an Integrated Access and Backhaul, IAB node (200, C, N3) in a radio access network, the method comprising performing, by the IAB node (200, N1, N2), power control for a first communication link between the IAB node (200, N1, N2) and a power-controlled radio node (10, 200, N3) based on power control information, the power control information pertaining to a second communication link between the power-controlled radio node (10, 200, N3) and a second IAB node (200, N2, N1). The disclosure also pertains to related methods and devices.

Abstract: 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.

Abstract: There is disclosed a method of operating an Integrated Access and Backhaul (IAB) node (200, C, N3) in a radio access network, the IAB node (200, C, N3) being connected to a first parent IAB node (200, N1, P) via a first backhaul link having a first timing, and being connected to a second parent IAB node (200, N2, P) via a second backhaul link having a second timing, the IAB node (200, C, N3) 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.

Abstract: A method, system and apparatus in a network node configured as an integrated access backhaul, IAB, node to communicate with a parent node and a child node and or a wireless device (WD) is provided. According to one aspect, the process includes, if a collision occurs between a scheduling grant for an uplink parent backhaul and an already issued scheduling grant for an uplink child backhaul, then one of: transmitting on an uplink parent backhaul and ignore possible uplink transmission from the child node and/or the WD; and ignoring a scheduling grant from the parent node and not transmit on an uplink parent backhaul.

Abstract: A method, performed by a first node (111). The method is for handling access to a communications network (100) in a multi-hop deployment. The first node receives (305), from a fourth node (114), information. The information indicates a recommendation on which node within radio range to connect to, out of a plurality of candidate parent nodes (120). The plurality comprises a first set (121) and a second set (122) of candidate parent nodes. A third node (113) is enabled to be a donor node in the first set (121). A sixth node (116) is enabled to be a donor node in the second set (122). The first node also determines (307), out of the plurality, a second node (112) to establish a connection with. The determining (307) is based on the received information. The first node then initiates (308) establishment of a connection or re-connection to the network via the second node (112), as first-hop.

Abstract: A relay node, configured for mapping end-user bearers to backhaul bearers for communications with a distributed unit, DU, of a donor base station, maps (2062) first end-user bearers to a first set of backhaul bearers for communications with the DU via a first mobile termination, MT, entity in the relay node, maps (2604) second end-user bearers to a second set of backhaul bearers for communications with the DU via a second MT entity in the relay node and exchanges (2606) data with the DU over the first and second sets of backhaul bearers, via the first and second MT entities, respectively.

Abstract: There is provided mechanisms for transmit time adjustment. A method is performed by a second network node. The method comprises obtaining an indication of a need for transmit time adjustment with a first network node during ongoing communication with the first network node. The method comprises providing a first notification to at least one third network node to adjust its receive timing for receiving a signal from the second network node as part of ongoing communication with the second network node. The method comprises adjusting transmit timing for transmitting a first signal to the first network node as part of the ongoing communication with the first network node and for transmitting at least one second signal to the at last one third network node as part of the ongoing communication with the at least one third network node.

Abstract: There is provided mechanisms for transmit timing adjustment. A method is performed by a second network node. The method comprises obtaining an indication of beam link failure of a current beam. The current beam is used for ongoing communication with a first network node. The method comprises switching over to a backup beam of the current beam for continuing the ongoing communication with the first network node. The method comprises adjusting transmit timing for transmitting a signal as part of the ongoing communication in the backup beam based on earlier communicated timing information with the first network node before making any transmission of the signal on the backup beam.

Abstract: A radio network node receives a data block to be transmitted by the radio network node towards a destination node. The data block is received over an upstream wireless backhaul from an upstream radio network node and/or is to be transmitted towards the destination node over a downstream wireless backhaul to a downstream radio network node. The radio network node determines a remaining delay budget that indicates a remaining portion of a delay budget for the data block to reach the destination node. The radio network node makes a decision about how or whether to transmit the data block, based on the remaining delay budget.