Abstract: Systems, methods, apparatuses, and computer program products for the configuration of user device(s) for reception of point-to-multipoint transmission are provided. One method may include receiving, at a user equipment, a configuration for point-to-multipoint reception of a group-common transport channel. The configuration may include a group-common signaling configuration for a group of user equipment. The method may also include receiving, at the user equipment, a point-to-multipoint reconfiguration message using the group-common signaling configuration on the group-common transport channel from a device (e.g., a network node). The point-to-multipoint reconfiguration message may include an updated point-to-multipoint configuration. The method may then include receiving point-to-multipoint data, from the device on the group-common transport channel, based on the updated point-to-multipoint configuration.

Abstract: Example embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media for enhancement on the IAB network. The method comprises: receiving, at a first network device and from a first central device for controlling the first network device, a first message comprising configuration information about at least one of duplication and de-duplication for a packet at backhaul adaptation protocol, BAP, layer; and communicating, based on the configuration information, the packet with a group of second network devices and the first central device in an integrated access and backhaul, IAB, network. By duplicating uplink and downlink data associated with terminal devices in the IAB network at BAP level, the reliability and resiliency of backhaul links can be improved.

Abstract: A method comprising determining with an apparatus, where the apparatus comprises a user equipment in an inactive state or an idle state, that a scheduling is activated in a cell, where the user equipment has not received scheduling activation regarding the scheduling activated in the cell, and where the user equipment has selected the cell; based upon the determining that the scheduling is activated in the cell, sending, with the user equipment, a signal to a network element, where the signal is configured to request activation of the scheduling; receiving scheduling activation from the network element in response to the signal, and upon receiving the scheduling activation, receiving data according to the scheduling.

Abstract: Embodiments of the present disclosure disclose devices, methods and apparatuses for multicast transmission. A terminal device may receive a mode indication of multicast transmission from a network device. The mode indication may indicate a beam mapping mode which is activated among multiple beam mapping modes, and the beam mapping mode may be associated with a mapping between a transmission beam and a physical downlink control channel (PDCCH) monitoring occasion for the terminal device. The terminal device may further perform a PDCCH monitoring based on the mode indication.

Abstract: According to an example aspect of the present invention, there is provided a method, comprising determining by an apparatus, while the apparatus is in an inactive state and receiving a multicast service from a cell of a first wireless network node, that there is no delivery for the multicast service for user equipments in the inactive state in a cell of a second wireless network node, wherein the cell of the second wireless network node is a target cell intended by the apparatus for camping, transmitting to the first wireless network node by the apparatus, based on said determination, a request for reconnection to the cell of the first wireless network node and transmitting by the apparatus, to the first wireless network node, an indication indicating that the request is for reconnecting for service continuity of the multicast service.

Abstract: Embodiments of the disclosure provide a method, device and computer readable medium for centralized unit switch. According to embodiments of the present disclosure, the DU transmits identity information of a target CU/DU to the source CU for the CU switch. The target CU does not need to initiate context setup procedure to set up context for the terminal device. Thus, the switch is implemented with minimized signaling and interruption in the data connection and the switched is completed faster by avoiding the unnecessary F1 AP context setup.

Abstract: Disclosed are methods for controlling message transmissions in an integrated access and backhaul network. An example method may include: determining, by a donor central unit in an integrated access and backhaul network, at least one configuration for controlling a transmission of at least one radio resource control message from a node to a child node of the node in the integrated access and backhaul network: and transmitting, by the donor central unit the at least one configuration to the node. Related apparatuses and computer readable media are also disclosed.

Abstract: Disclosed is a method comprising receiving, from a distributed unit, an indication for assisting in determining a reconfiguration having an effect on at least one radio bearer for providing a multicast communication service or a broadcast communication service to at least one terminal device, the at least one radio bearer comprising at least a point-to-point leg for providing said service; and transmitting, to the at least one terminal device, a message indicative of the reconfiguration.

Abstract: Implementations of advanced frequency synchronization in a mobile integrated access backhaul deployment are disclosed. An apparatus includes at least one processor, and at least one non-transitory memory including computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to perform: estimate a change in a propagation delay at two time instants, measure a time period of the two time instants using a local clock of a network node, wherein the two time instants correspond to a known timing of a received signal, subtract the change of the propagation delay from the measured time period, calculate a difference between the subtracted time period and a known timing of the received signal; and convert the difference to a frequency offset value to synchronize downlink transmission frequency between the network node and a parent node.

Abstract: Embodiments of the present disclosure relate to reliable SPS configuration for MBS. In the solution, a first device starts a first timer upon receiving, from a second device, configuration of a semi-persistent scheduling (SPS) for a multicast and broadcast service (MBS). Then if the first timer expires and there is no information received to activate corresponding SPS scheduled transmissions, the first device transmits to the second device a message indicating that the first device failed to receive the information. This solution allows reliable SPS configuration for MBS.

Abstract: A method comprises receiving a handover request from a source BS, the handover request comprising a request for a handover of a UE involved in at least two QoS flows using a first MRB with the source BS, wherein the apparatus is using at least a second MRB for other UEs; starting to buffer packets for the UE; receiving a subsequent message comprising, for each of the at least two QoS flows, a CN SN of a first packet not transmitted by the source BS for that QoS flow; identifying a second packet with the highest protocol entity SN according to a protocol entity transmission order of the second MRB among packets which the source BS has delivered to the UE using the first MRB and the apparatus has transmitted to the other UEs using the second MRB; and transmitting a message configuring the UE to use the second MRB.

Abstract: Systems, methods, apparatuses, and computer program products for informing a central unit control plane regarding the capabilities and/or service area of a central unit user plane are provided. For example, a method may include notifying, by a central unit user plane to a central unit control plane using a message, at least one of an offered multicast radio bearer configuration to be shared in relation with a multicast/broadcast session served by the central unit user plane and one or more offered service area corresponding to the central unit user plane.

Abstract: This document discloses a solution for selecting a frequency channel for a service. According to an aspect, a method comprises: receiving, by a first access node of a first wireless network, a scanning message comprising at least one information element indicating a channel access limit for a frequency channel operated by a second access node of a second wireless network; selecting, by the first access node on the basis of the at least one information element, the frequency channel or another frequency channel for an ultra-reliable low-latency (URLLC) service provided by the apparatus; and upon selecting the frequency channel for the URLLC service, causing by the first access node transmission of frames of the service within channel access limits indicated by the at least one information element.

Abstract: Systems, methods, apparatuses, and computer program products for polling and keep-alive signals for multimedia broadcast multicast service. The method may include receiving a physical downlink control channel order addressed to a group-radio network temporary identifier. The method may also include performing uplink transmission of a signal in response to the physical downlink control channel order.

Abstract: Systems, methods, apparatuses, and computer program products for changing MRB ID without requiring release and add functions. One method may include receiving, by a user equipment, a RRC reconfiguration message from a network entity comprising a MRB. The MRB is identified by a first MRB ID, and the RRC reconfiguration message further comprises a second MRB ID associated with the first MRB ID. The user equipment associates the MRB with the second MRB ID configured for subsequent identification of the MRB. The user equipment receives MBS data through the MRB associated with the second MRB ID.

Abstract: Systems, methods, apparatuses, and computer program products for the configuration of user device(s) for reception of point-to-multipoint transmission are provided. One method may include receiving, at a user equipment, a configuration for point-to-multipoint reception of a group-common transport channel. The configuration may include a group-common signaling configuration for a group of user equipment. The method may also include receiving, at the user equipment, a point-to-multipoint reconfiguration message using the group-common signaling configuration on the group-common transport channel from a device (e.g., a network node). The point-to-multipoint reconfiguration message may include an updated point-to-multipoint configuration. The method may then include receiving point-to-multipoint data, from the device on the group-common transport channel, based on the updated point-to-multipoint configuration.

Abstract: A method comprises receiving a handover request from a source BS, the handover request comprising a request for a handover of a UE involved in at least two QoS flows using a first MRB with the source BS, wherein the apparatus is using at least a second MRB for other UEs; starting to buffer packets for the UE; receiving a subsequent message comprising, for each of the at least two QoS flows, a CN SN of a first packet not transmitted by the source BS for that QoS flow; identifying a second packet with the highest protocol entity SN according to a protocol entity transmission order of the second MRB among packets which the source BS has delivered to the UE using the first MRB and the apparatus has transmitted to the other UEs using the second MRB; and transmitting a message configuring the UE to use the second MRB.

Abstract: There is disclosed method for a network apparatus, the method comprising configuring the network apparatus to use a first transmit and/or receive pattern selected from a plurality of available transmit and/or receive patterns for performing discovery procedures with another network apparatus, wherein the first transmit and/or receive pattern is selected from said plurality in dependence on at least the mobility of said network apparatus and/or on the relative mobility of said network apparatus to said another network apparatus.

Abstract: Implementations of advanced frequency synchronization in a mobile integrated access backhaul deployment are disclosed. An apparatus includes at least one processor, and at least one non-transitory memory including computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to perform: estimate a change in a propagation delay at two time instants, measure a time period of the two time instants using a local clock of a network node, wherein the two time instants correspond to a known timing of a received signal, subtract the change of the propagation delay from the measured time period, calculate a difference between the subtracted time period and a known timing of the received signal; and convert the difference to a frequency offset value to synchronize downlink transmission frequency between the network node and a parent node.

Abstract: Systems, methods, apparatuses, and computer program products for polling and keep-alive signals for multimedia broadcast multicast service. The method may include receiving a physical downlink control channel order addressed to a group-radio network temporary identifier. The method may also include performing uplink transmission of a signal in response to the physical downlink control channel order.