Abstract: Embodiments of the present disclosure relate to routing in integrated access and backhaul (IAB) communication. According to embodiments of the present disclosure, two or more IAB donors share topology information for inter IAB network routing. The IAB donors allocate addresses to IAB nodes with dual connectivity based on the topology information. In this way, it avoids address collisions when routing in the inter IAB networks.

Abstract: A method includes receiving, by a user equipment, a configuration for determining one or more antenna panel-wise cross-link interference measurements from a network entity configured to receive one or more downlink spatial directions. The method also includes calculating, by the user equipment, one or more interference estimates of UL interfering signals and related cross-link interference powers from the network entity. The method further includes transmitting, by the used equipment, one or more interference measurements based upon the configured flexible UL-to-DL cross-link specific resource configuration to the network entity.

Abstract: Embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media for transferring traffic in integrated access and backhaul (IAB) communication. According to embodiments of the present disclosure, a first Central Unit-Control Plane (CU-CP) of a first IAB donor transmits, to a second CU-CP of a second IAB donor, a request to transfer target traffic via a Distributed Unit (DU) of the second IAB donor. The request comprises first information of the target traffic. The first CU-CP receives, from the second CU-CP, second information to be used for configuring the target traffic. This solution can improve the reliability and robustness of the IAB communication.

Abstract: Embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable media for communication during inter-donor topology adaptation. A first device transmits, to a second device, first information about a first communication interface between the first device and a third device, receives, from the second device, an indication that context information associated with at least one fourth device and the first communication interface is retained, and uses the context information in communication via a second communication interface between the first device and the second device. The second device receive the first information, transmit, to the third device, a request for obtaining the context information, and receive the context information from the third device.

Abstract: Example embodiments of the present disclosure relate to handover for a device (s) served by an Integrated Access and Backhaul (IAB) node. A first device receives indication information indicating a change of service availability of a second device that serves at least one third device. The first device determines, based on the indication information, whether a handover of the at least one third device from the second device is to be triggered. In accordance with a determination that the handover of the at least one third device is to be triggered, the first device transmits, to the second device, handover information indicating at least one fourth device selected for the handover of the at least one third device from the second device.

Abstract: In accordance with example embodiments of the invention there is at least a method and apparatus to perform determining, by a first network device in a communication network, allocation information for an availability of resources in the communication network; and sending, by the network device, to a second network device the allocation information for use in at least one of simultaneous transmission by the second network device to the first network device and a third device or simultaneous reception by the second network device from the first network device and a third device of at least one operation associated with the allocation information for allocation of the resources to the third device in the in the communication network.

Abstract: There is provided a method to operate a downstream IAB, Integrated Access and Backhaul, node of an IAB network, is provided, wherein the method comprises: receiving a first radio resource configuration that indicates a use of radio resources by the upstream IAB node and by at least one radio node served by the upstream IAB node; determining a second radio resource configuration or the downstream IAB node in dependence on the first radio resource configuration; and communication with at least one radio node, which is served by the downstream IAB node, via radio resources according to the second radio resource configuration.

Abstract: A technique includes sending, by a relay node to a candidate base station via a base station-to-base station connection, a request for transmission of reference signals, wherein the base station-to-base station connection includes, at least in part, a wireless connection; receiving, by the relay node from the candidate base station, a reference signal configuration; and measuring one or more signal parameters of one or more received reference signals based on the received reference signal configuration.

Abstract: An apparatus including at least one processor and at least one memory including computer code for one or more programs, the at least one memory and the computer code configured, with the at least one processor, to cause the apparatus at least to: generate information for controlling dynamic allocation between backhaul and access links within time division duplex time slots; and convey the information to a relay node within an indicator in a downlink fixed time slot.

Abstract: Systems, methods, apparatuses, and computer program products for the synchronization and timing of IAB nodes are provided. One method may include determining, at a parent node, a resource configuration and using the determined resource configuration to set a timing advance (TA) mode with two offsets comprising a first offset to be used with time division multiplexing (TDM) and a second offset to be used with at least one of spatial division multiplexing (SDM) or frequency division multiplexing (FDM). The method may also include transmitting a command, to an integrated access and backhaul (IAB) node, to start adjusting mobile termination (MT) uplink (UL) transmission (Tx) timing based on the resource configuration and the timing advance (TA).

Abstract: A distributed unit, DU, of a radio access node configured to operate in a scenario where the DU is one of multiple DUs serving links to a multi-connected entity, acquires a first DU radio resource configuration for the DU, acquires a first link radio resource configuration corresponding to a first link of a multi-connectivity link of a multi-connected entity, wherein the first link is served by the DU, acquires a multiplexing configuration of the multi-connectivity link, and determines availability of at least one radio resource for the multi-connectivity link based on the first DU radio resource configuration, the first link radio resource configuration, and the multiplexing configuration.

Abstract: A method for adjusting transmit timing is disclosed. The method includes determining a reference timing advance value TAref, receiving a time offset parameter; and adjusting downlink transmit timing based on i) detected downlink receive timing of radio node and ii) the reference timing advance value TAref and the time offset parameter.

Abstract: Systems, methods, apparatuses, and computer program products for supporting or providing wireless backhauling are provided.

Abstract: An apparatus comprising at least one processor and at least one memory including computer code for one or more programs, the at least one memory and the computer code configured, with the at least one processor, to cause the apparatus at least to support for a determined period at least one hop within a multi-hop self-backhaul communications, wherein the determined period comprises: a first part within which information for controlling dynamic allocation between backhaul and access links within resource slots is passed between the apparatus and at least one further apparatus in the multi-hop self-backhaul communications; and a second part within which a dynamic slot pattern is implemented based on the information for controlling dynamic allocation between backhaul and access links within resource slots is passed between the apparatus and at least one further apparatus in the multi-hop self-backhaul communications.

Abstract: Systems, methods, apparatuses, and computer program products for paging area update (PAU) failure handling are provided. One method may include configuring a user equipment in UE centric mobility mode, wherein failure of a paging area update procedure is handled in an access stratum layer.

Abstract: Methods and apparatus, including computer program products, are provided In one aspect there is provided a method. The method may include detecting, at a first node, an event; generating, at the first node, a message in response to the detected event; and sending, at the first node, the message to at least a second node to enable the second node to determine at least one of a reliability or an importance of the message. Related apparatus, systems, methods, and articles are also described.

Abstract: Methods and apparatus, including computer program products, are provided in one aspect there is provided a method. The method may include detecting, at a first node, an event; generating, at the first node, a message in response to the detected event; and sending, at the first node, the message to at least a second node to enable the second node to determine at least one of a reliability or an importance of the message. Related apparatus, systems, methods, and articles are also described.

Abstract: Methods and apparatus, including computer program products, are provided for MBSFN measurements. In one aspect there is provided a method. The method may include receiving, by a user equipment, an indication of a monitoring requirement (202, 204) for at least one of an idle mode of operation at the user equipment or a connected mode of operation at the user equipment; receiving, by the user equipment, information (206) for one or more transmissions (MBMS) that are multicast or broadcast; and measuring, by the user equipment, the one or more transmissions (MBMS) that are multicast or broadcast, the measuring performed in accordance with the received information (206) and without regard to the indication of the monitoring requirement (202, 204) for at least one of the idle mode of operation or the connected mode of operation. Related apparatus, systems, methods, and articles are also described.

Abstract: In accordance with example embodiments of the invention there is at least a method and apparatus to perform determining, by a first network device in a communication network, allocation information for an availability of resources in the communication network; and sending, by the network device, to a second network device the allocation information for use in at least one of simultaneous transmission by the second network device to the first network device and a third device or simultaneous reception by the second network device from the first network device and a third device of at least one operation associated with the allocation information for allocation of the resources to the third device in the in the communication network.

Abstract: A technique of performing a handover procedure involves providing a proper timing adjustment indication for the UE performing RACH-less HO. Even though the discussion herein is on IAB scenarios and the idea takes an advantage of IAB nodes being in fixed locations (i.e., not moving in the network), it can be applied to UEs in general. The timing adjustment provided in performing a HO in an IAB network according to the improved techniques involves computing a timing advance (TA) to be used by an IAB node prior to executing HO to an alternative serving node. Such a use of a TA may enable a bypassing of a RACH procedure when accessing a cell.