Abstract: For a source stream of input data where FEC scheme(s) have been used to create a repair stream, transmitting by a network node packet(s) comprising data of the source stream or the repair stream packaged as at least part of PDU(s). An ARQ or HARQ process is applied to the PDU(s). The network node receives feedback information as part of the process corresponding to the PDU(s), including positive ACK/NACK response for the PDUs. The retransmissions of the negatively acknowledged PDU(s) are controlled when the FEC scheme is known not to be able to compensate for loss(e)s of packet(s) contained in the PDU(s) indicated as being negatively acknowledged. A UE receives packet(s), determines loss(es), and, in response to a determination the FEC scheme is known to be able to recover from the loss(es), sends at least one ACK for any lost packets that correspond to the one or more loss(es).

Abstract: A network node, a core network node and a user equipment are disclosed. The network and the core network node each includes a processor; and a memory storing respective instructions. When executed by the processor, the network node is configured to: determine at least one radio access network timing synchronization status reporting range associated with at least one radio access network timing synchronization status attribute; and transmit, to a second network node, the radio access network timing synchronization status reporting range. The core network node is configured to: determine at least one radio access network timing synchronization status reporting range associated with at least one radio access network timing synchronization status attribute. In addition, the user equipment includes a processor; and a memory storing instructions that, when executed by the processor, cause the user equipment to: determine a clock quality acceptance criteria; and transmit the clock quality acceptance criteria.

Abstract: Methods and apparatus for multicast services are provided. In a method a resource message is received on a control channel indicating a first search space type and assistance information for the first search space type. It is determined based on the assistance information that a second search space type is to be applied for monitoring of a multicast search space. Monitoring of the multicast search space can be provided according to the second search space type.

Abstract: Disclosed are methods and apparatus for multiplexing NACK-only HARQ feedback. A terminal device in a communication network may comprise at least one processor and at least one memory having computer program code stored thereon. The at least one memory and the computer program code may be configured, with the at least one processor, cause the terminal device to perform: receiving, from a network device, one or more uplink control channel configurations for transmitting HARQ feedback for multicast transmission of one or more services; receiving, from the network device, the multicast transmissions of the one or more services; converting HARQ feedback bits of the HARQ feedback for the multicast transmissions of the one or more services; multiplexing the converted HARQ feedback bits into a multiplexed HARQ feedback; selecting a physical uplink control channel (PUCCH) resource for transmission of the multiplexed HARQ feedback; and transmitting the multiplexed HARQ feedback using the selected PUCCH resource.

Abstract: Apparatuses and methods are provided to enable a receiver device monitoring a control channel configured for carrying information indicating transmission types of point-to-multipoint services detect a point-to-multipoint service of interest. The device can further detect an indication of a transmission type associated with the point-to-multipoint service of interest. In response a request can be sent for a configuration enabling reception of the indicated transmission type of the point-to-multipoint service of interest on a point-to-multipoint traffic channel. In the absence of said further detecting, the device can refrain from sending the request for the configuration for reception of the transmission type of the point-to-multipoint service.

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: Various techniques are provided for an apparatus that can identify a multicast and broadcast services session associated with user equipment device(s) in a serving cell associated with the apparatus, communicate a first information set including information associated with the serving cell and the MBS session provided in the serving cell, receive from an apparatus associated with a neighboring cell, a second information set including information associated with the neighboring cell and an MBS session provided in the neighboring cell, determine at least one MBS serving characteristic associated with the serving cell based on the UEs in the serving cell being served by the apparatus and the received second information set, determine whether the serving cell associated with the apparatus is a preferred cell to serve the MBS session to UEs based on the at least one MBS serving characteristic, and in response to determining that the serving cell associated with the apparatus is the preferred cell to serve the MBS

Abstract: Example embodiments of the present disclosure relate to configuration and interpretation of control information for a retransmission. A first device receives control information from a second device. In accordance with a determination that the control information indicates a retransmission to be scheduled from the second device. the first device determines an information combination of at least one of the following: at least one field of the control information, a search space in which the control information is received. and a format of the control information. The first device further determines a source traffic type of the retransmission based on the information combination, the source traffic type of the retransmission indicating whether the retransmission is for traffic in a point-to-multipoint initial transmission or in a point-to-point initial transmission.

Abstract: Disclosed are methods for power control on negative acknowledgement transmission.

Abstract: Methods, apparatuses, and computer program products are disclosed for implementing recovery from a communication failure. A method includes receiving, by a first user equipment, an indication that a second user equipment has experienced a failure, where the first user equipment and the second user equipment are part of a same device, and where the first user equipment is configured with a first primary reliability group and where the second user equipment is configured with a second primary reliability group; based upon the indication, the first user equipment transmitting to a network equipment a first signal to activate a secondary reliability group for the first user equipment; and receiving, by the first user equipment, a second signal to use the secondary reliability group, where the second signal is at least partially based upon the first signal transmitted from the first user equipment.

Abstract: Example embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media for enhancement of HARQ feedback. The method comprises: upon receipt of data of at least one of a group of services from a second device, generating, at a first device, a Hybrid Automatic Repeat Request acknowledgement (HARQ-ACK) codebook comprising HARQ feedback and identification information for the at least one service, the group of services comprising at least one of multicast and broadcast services (MBSs) and unicast services; and transmitting the HARQ-ACK codebook to the second device. In this way, retransmissions of unicast and multicast services can be accurately scheduled in time, and unnecessary retransmissions can be avoided. In addition, the spectral efficiency and packet loss rate of the communication system can be improved.

Abstract: Example embodiments of the present disclosure relate to polling a device for multicast broadcast service interest indication. A first device receives, from a second device, a physical downlink control channel (PDCCH) order addressed by a paging radio network temporary identifier for the first device. The PDCCH order comprises a request for an indication that at least one multicast broadcast service is to be received by the first device. The first device transmits, to the second device, a random access preamble associated with the at least one multicast broadcast service as a response to the request. Through this solution, the first device that monitors the single PDCCH order may have less power consumption.

Abstract: This disclosure presents solutions for allowing a transmitter of multicast broadcast services (MBS) to select a mapping algorithm for mapping synchronization signal block (SSB) beams to slots with PDCCH monitoring occasions (MOs) of a multicast control channel (MCCH) window duration. The transmitter can be a communication node. In some example embodiments, the transmitter can receive assistance information from one or more UEs and utilize that assistance information to determining the mapping algorithm to utilize. The transmitter can determine whether across MCCH window duration mapping is enabled or disabled. The transmitter can determine the pattern of repetition of SSB beams when there are more slots with PDCCH MOs in the MCCH window duration than there are SSB beams in a set of SSB beams where each SSB beam has at least one UE interested at MBS. The SSB beam mapping can be communicated to MBS receivers, allowing them to optimize operations by listening to their respective appropriate monitoring occasions.

Abstract: Disclosed is a method comprising determining an alternative set of random-access resources based at least partly on an estimated number of idle and/or inactive terminal devices, wherein the alternative set of random-access resources comprises at least one or more random-access resources that are not comprised in an initial set of random-access resources indicated by an initial set of configuration parameters at the estimated number of idle and/or inactive terminal devices. A group paging message indicating at least the alternative set of random-access resources and a group identifier is transmitted to the estimated number of idle and/or inactive terminal devices.

Abstract: A method, apparatus and computer program product establish at least two redundant protocol data unit sessions to at least one user equipment. The at least two redundant protocol data unit sessions are established based on dual connectivity in a radio access network. The method, apparatus and computer program product collect network status information related to the at least two redundant protocol data unit sessions. The method, apparatus and computer program product configure a set of protocol data unit session switching patterns for the at least two redundant protocol data unit sessions based on the real-time network status information.

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: 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: 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: receive a message from at least one user equipment requesting to join a multicasting/broadcasting group; receive data for multicasting/broadcasting from a data network; generate multicasting/broadcasting session information for the data; route the data based on the multicasting/broadcasting session to at least one access point, wherein the access point wirelessly communicates the data to user equipment based on the multicasting/broadcasting session information.

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: Disclosed is a method comprising determining an alternative set of random-access resources based at least partly on an estimated number of idle and/or inactive terminal devices, wherein the alternative set of random-access resources comprises at least one or more random-access resources that are not comprised in an initial set of random-access resources indicated by an initial set of configuration parameters at the estimated number of idle and/or inactive terminal devices. A group paging message indicating at least the alternative set of random-access resources and a group identifier is transmitted to the estimated number of idle and/or inactive terminal devices.