Abstract: A method performed at an apparatus for configuration of a Radio Access Network (RAN) Notification Area (RNA) is provided. The method comprises receiving a message including RNA information to be temporarily added to the RNA, and timing information associated to the RNA information. The method further comprises configuring the RNA by temporarily adding the RNA information to the RNA based on the timing information.

Abstract: In an MN in wireless communication with a UE and in communication with SN(s), after receiving an indication from the UE that an SCG failure has occurred, determining by the MN which node of at least the MN or a last serving SN or another SN is responsible for the SCG failure. Based on the outcome, performing by the MN an analysis for mobility robustness for the SCG failure where the MN was responsible for the SCG failure. In an SN, of an SCG, determining whether or not the SN is responsible for an SCG failure. In response to receiving from the MN a message corresponding to the SCG failure, indicating to the master node by the secondary node whether or not the secondary node is responsible for the secondary cell group failure.

Abstract: Systems, methods, apparatuses, and computer program products for common frequency resource, control resource set configurations, and common frequency resource switching. The method may include receiving, from a network element, a configuration for monitoring at least one broadcast services on a communication resource. The method may also include monitoring the at least one broadcast service on the communication resource based on the configuration. According to certain example embodiments, the communication resource may be a subset of an initial bandwidth part, or the communication resource may include an initial bandwidth part as a subset of the communication resource.

Abstract: Embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media of enabling a successful Mobility Robustness Optimization analysis for primary secondary cell (PSCell) changes. The method comprises transmitting, from a terminal device to a master node of the terminal device, information related to a node initiating a successful PSCell change for the terminal device, wherein the information is indicative of at least one of the following: whether the node initiating the successful PSCell change is either a master node or a secondary node for the apparatus; a cell identifier of the node initiating the successful PSCell change.

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: Example embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media for semi-static scheduling of multicast broadcast service traffic. In example embodiments, at least one of enabling, disabling or modification of a semi-persistent scheduling configuration is determined for a group of devices on a bandwidth part for multicast broadcast service traffic. The at least one of enabling, disabling or modification of the semi-persistent scheduling configuration is indicated to the group of devices.

Abstract: Embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable medium of a configuration of successful primary secondary cell (PSCell) change report. The method comprises obtaining information associated with a SPCR; and determining a configuration of the SPCR based at least partly on the information.

Abstract: Example embodiments of the present disclosure relate to semi-static HARQ-ACK codebook construction for frequency-multiplexed DL data transmission. A first device includes at least one processor; and at least one memory including computer program codes; wherein the at least one memory and the computer program codes are configured to, with the at least one processor, cause the first device to: receive downlink configuration information from a second device, receive at least two frequency-multiplexed downlink transmissions at one downlink data transmission occasion, and set, based on the downlink configuration information and an error state of the frequency-multiplexed downlink data transmissions, an acknowledgment indication in a semi-static HARQ-ACK codebook to be transmitted to the second device for the downlink data transmission occasion.

Abstract: This disclosure presents methods and processes to allow a user equipment (UE) to map a hybrid automatic retransmission request-acknowledgement (HARQ-ACK) feedback to one or more HARQ-ACK sub-codebooks for received services. The one or more HARQ-ACK sub-codebooks can be concatenated into one HARQ-ACK codebook and then communicated to a communication node, when those services use a HARQ-ACK feedback that is scheduled for the same time instance. Various methods can be used for the concatenation order depending on the number of multicast and broadcast services (MBS) for which HARQ feedback is to be provided, and depending on whether HARQ-ACK feedback is to be sent for unicast services at the scheduled time instance. The concatenation order can utilize an increasing order or a decreasing order of the concatenation order parameters.

Abstract: Embodiments of the present disclosure relate to frequency domain resource allocation for multicast traffic. A method comprises: receiving, at a first device and from a core network element, multicast traffic to be scheduled for a second device; generating assistance information for the second device, the assistance information enabling the second device to identify, within a bandwidth part configured for the second device, a frequency domain resource allocated for the multicast traffic; and transmitting the assistance GC information to the second device. The method further comprises: receiving, at the second device, the assistance information from a first device; and determining the frequency domain resource from downlink control information based on the assistance information. In this way, a significant flexibility to schedule multicast traffic can be provided, and a significant complexity reduction to a terminal device can be provided.

Abstract: Embodiments of the present disclosure relate to methods, apparatuses and computer readable storage media for search space configuration for multicast traffic. According to embodiments of the present disclosure, a first device determines, from a group of search space sets configured to the first device, at least one search space set for monitoring multicast traffic from a second device, based on at least one of a priority of the multicast traffic and respective types of the search space sets. The first device monitors the multicast traffic from the second device in the at least one search space set. The solution enables multicast traffic to be monitored in a common search space set, a user-specific search space set or a multicast search space set in different scenarios.

Abstract: Embodiments of the present disclosure relate to methods, apparatuses and computer readable storage media for channel state information (CSI) reporting. According to embodiments of the present disclosure, a first device receives from a second device a configuration for CSI reporting. The configuration comprises at least a block error rate target and an indication of a number of HARQ transmissions. The first device determines Channel Quality Indicator (CQI) based on the block error rate target and the number of HARQ transmissions indicated by the configuration and transmits a CSI report comprising the CQI to the second device. The solution enables CSI feedback that is suitable for spectrally efficient and reliable delivery of Point to Multipoint services while meeting the delay requirement, in particular in the context of NACK-only feedback on common feedback resources.

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: Example embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media for a primary secondary cell (PSCell) change failure. In example embodiments, a master network device receives, from a source secondary network device, a first request for a change of a terminal device from the source secondary network device to a target secondary network device. The master network device receives, from the source secondary network device, an identification of a source PSCell operated by the source secondary network device and serving the terminal device prior to the first request. The master network device further receives, from the terminal device, an indication of a radio link failure of the terminal device in a PSCell and transmits the indication of the radio link failure to the source secondary network device along with the identification of the source PSCell.

Abstract: Embodiments of the present disclosure relate to time domain resource allocation for multicast broadcast service. A first device receives, from a second device, DCI comprising a TDRA field, and determines, based on at least one of an identifier for scrambling the DCI, a RRC state of the first device or a type of traffic configured for the first device, a TDRA list from a set of configurations for TDRA. Then the first device applies, based on the TDRA list, the TDRA field for reception of the traffic from the second device. In this way, a TDRA list to be used may be determined in an optimal manner, with all terminal devices receiving multicast and broadcast traffic determining common values for time domain resources where data traffic would be scheduled.

Abstract: Embodiments of the present disclosure relates to estimating downlink size for a multicast traffic. According to embodiments of the present disclosure, a first device receives downlink control information (DCI) for a multicast traffic. The first device determines field size(s) in the DCI based on one or more parameters which are associated with the field size estimation for the multicast traffic. The first device decodes the DCI based on the determined field sizes(s). In this way, the DCI can be blindly decoded correctly.