Abstract: Systems and methods are disclosed herein for frequency domain resource configuration in an Integrated Access and Backhaul (IAB) node. In one embodiment, a method performed by an IAB node configured to operate in a spectrum band comprises receiving a configuration message(s) related to the spectrum band comprising information that defines two or more modes of operation of a distributed unit (DU) of the IAB node that are allowed for two or more subsets of a plurality of subcarriers within the spectrum band of the IAB node, respectively. The method further comprises allocating at least one of the subsets of the plurality of subcarriers within the spectrum band for performing an operation based on a mode of operation of the IAB node and the information comprised in the configuration message(s) and performing the operation on the allocated at least one of the subsets of the plurality of subcarriers.

Abstract: A method, system and apparatus are disclosed for aligning Distributed Unit/Mobile Termination (DU/MT) transmission timing. In one embodiment, a method in a network node includes adjusting a first transmission timing to align with a second transmission timing, the first transmission timing comprising one of a Distributed Unit, DU, and a Mobile Terminated Unit, MT, transmission timing at the network node and the second transmission timing comprising another one of the DU and the MT transmission timing at the network node. In another embodiment, a method in a network node includes receiving an MT transmission based at least in part on an adjustment of a first transmission timing to align with a second transmission timing.

Abstract: The present disclosure relates to a first type node (AP1) in a wireless communication system, wherein the first type node (AP1) is adapted to: communicate with at least one neighboring first type node (AP0, AP2) via a corresponding backhaul channel (H10, H21); receive communication from at least one overheard second type node (U3k) via a corresponding overheard access channel (h3k_1), the overheard second type node (U3k) being adapted to normally communicate with a serving first type node (AP3); instruct at least one overheard second type node (U3k) to pause transmission to the serving first type node (AP3) at time instants (T+2) when the first type node (AP1) is going to receive a certain signal (x3k(T)) from the neighboring first type node (AP2), where the certain signal (x3k(T)) is intended to be received by the first type node (AP1) without interference from said overheard second type node (U3k).

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: Performing random access process. In one aspect, there is a method performed by a network function. The method comprises the network function generating system information and the network function broadcasting the system information. The system information comprises i) first power information for use by at least a first set of communication devices and a second set of communication devices in determining a transmit power, and ii) second power information for use by the first set of communication devices, but not the second set of communication devices, in determining the transmit power.

Abstract: The present disclosure relates to a node (AP2, U11) in a wireless communication system (1), where the node (AP2, U11) is adapted to communicate with at least two other nodes (AP1, AP0) in the wireless communication system (1), and where the other nodes (AP1, AP0) are first type nodes (AP1, AP0) which are adapted to communicate with each other by means of backhaul communication. The node (AP2, U11) is adapted to receive a signal (xA) transmitted from an adjacent first type node (AP1), where the (xA) has been forwarded from at least one farther first type node (AP0). In case of unsuccessful decoding of the signal (xA), the node (AP2, U11) is adapted to request re-transmission (NACK) of the signal (xA), and to receive a re-transmission of the signal (xA) directly from a farther first type node (AP0).

Abstract: A method for integrating access and backhaul links, the method includes: obtaining information indicating a data rate requirement for a link between a first AP and a second AP; obtaining information indicating a gain of the link between the first AP and the second AP; computing, using the gain of the link, an achievable data rate for the link between the first AP and the second AP, wherein the achievable data rate is computed based on an OMA scheme; determining that the data rate requirement is greater than the achievable data rate; and as a result of determining that the data rate requirement is greater than the achievable data rate, pairing a first UE with the first AP, such that a NOMA scheme is used for the link between the first AP and second AP and the link between the first AP and the first UE.

Abstract: The present disclosure relates to a first type node (AP3) in a wireless communication system (1), wherein the first type node (AP3) is adapted to: —communicate with at least one other first type node (AP2) in the wireless communication system (1) over a corresponding backhaul channel (H32) by means of one of at least one type of signal relaying that employs decoding and encoding, and —communicate with a corresponding group of second type nodes (U31, U32) via a corresponding access channel (h31, h32), each group of second type nodes (U31, U32) comprising at least one second type node (U31, U32).

Abstract: The present disclosure relates to first type node (AP0) in a wireless communication system (1), wherein the first type node (AP0) is adapted to: —communicate with at least one other first type node (AP1, AP2) in the wireless communication system (1) over a corresponding backhaul channel (H1, H4), —acquire a prediction for information (X23) to be requested via at least one of said other first type nodes (AP2, AP3), and to —transmit the predicted information (X23) to one of said other first type nodes (AP2) for buffer storage and/or relaying.

Abstract: A method performed by a first RAN node of an integrated access and backhaul, IAB, wireless communication network. The first RAN node is connected to a core network and is arranged for wireless communication with a second RAN node and with a number of UEs. Wireless communication resources are allocated for communication between the first RAN node and the second RAN node. The method includes assigning a first part of the resources for transmission of first data and a second part for transmission of second data between the first RAN node and the second RAN node, obtaining information of a vacant part of the resources, and triggering transmission of the first data and the second data using at least a fraction of the vacant part of the wireless communication resources for at least one of the first data and the second data.

Abstract: 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.

Abstract: A first type node (AP0, AP1, AP2) in a wireless communication system (1), wherein the first type node (AP0, AP1, AP2) is adapted to: —communicate with at least one other first type node (AP0, AP1, AP2) in the wireless communication system (1) over a corresponding channel (hA01, hA12), and —transmit a first plurality of signals (x11, x1i, X1N, X21, X2i, X2N?1) to the other first type node (AP0, AP1, AP2).

Abstract: In one aspect, a wireless relay node operating in a wireless communications network obtains (602), for each of one or more other wireless relay nodes, information indicating a muting pattern for muting of synchronization signal blocks, SSBs, by the other wireless relay node. The wireless relay node performs (604) measurements of SSBs and muting of SSB transmissions based on the obtained information.

Abstract: A dynamic UE grouping method for dense NOMA systems. One objective is to improve the performance gain by adding virtual diversity into the network. An embodiment allows a network node to consider different groups of UEs for data transmission using NOMA based on the UEs' message decoding status without CSI updates.

Abstract: An adaptive receiver system for UEs using NOMA. For example, a network node (e.g, an access point, such as a base station) obtains a first set of data points for a first decoding scheme, each data point included in the first set of data points identifying a maximum achievable rate for the first UE and a maximum achievable rate for the second UE. The network node uses the first set of data points, a first rate demand for a first UE, and a second rate demand for a second UE to determine a decoding scheme for decoding a message transmitted by one of the first UE and a transmission point of the network node.

Abstract: A CSI-constrained UE grouping system for dense uplink NOMA systems. For example, a network node (e.g., an access point, such as a base station) determines which UEs should be grouped based on the uplink (UL) rate demand (UL traffic demand), and sends appropriate parameters to those UEs for UL transmission.

Abstract: The present disclosure relates to a first type node in a wireless communication system, wherein the first type node is adapted to: communicate with at least one other first type node in the wireless communication system over a corresponding channel receive a plurality of signals, each signal being associated with a corresponding decoding error probability, from the other first type node estimate the decoding error probability for each signal sort the signals in a decoding order according to the estimated decoding error probability, decode the signals one at the time from the lowest estimated decoding error probability to the highest estimated decoding error probability until decoding for a certain signal is determined to have failed, request re-transmission of the signal for which decoding has been determined to have failed, and to request re-transmission of all signals having higher decoding error probability than the signal for which decoding has been determined to have failed.

Abstract: A variable-length coding method to improve the performance of downlink NOMA. Depending on the channel conditions and the amount of data waiting to be transmitted the UEs served by the NN, the NN groups UEs (e.g., pairs two UEs) with appropriate channel qualities and adapts the transmission powers in different sub-codewords as well as the codeword length such that the UEs minimum quality-of-service requirements are satisfied. This makes it possible to improve the UEs/network achievable rates and the NN energy efficiency.

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: A method performed by a network node serving a first and second user equipment (UE). The method includes the network node receiving, during a first time slot, a first combined signal comprising a first message transmitted by the first UE and a second message transmitted by the second UE. The method also includes the network node attempting to decode the first message transmitted by the first UE. The method further includes the network node, as a result of failing to decode the first message transmitted by the first UE, transmitting a negative acknowledgement to the first and second UE without attempting to decode the second message.