Abstract: Embodiments are directed towards communication methods for lossless MBS transmission based on PDCP synchronization during handover. Combined mapping information including mapping information of GTP-U SNs and PDCP SNs, as well as mapping information of QoS flow IDs and MRB/DRB IDs is exchanged/shared between source RAN node and target RAN nodes to achieve such lossless transmission. UEs and base stations with processors configured to perform such methods are also introduced.

Abstract: A method for transmitting a point-to-multipoint (PTM) configuration executable in a base station includes assigning radio resources for the PTM configuration; wherein the PTM configuration includes scheduling information of a multicast control channel (MCCH) and/or a multicast transmission channel (MTCH); determining a scheduling configuration for the PTM configuration based on the radio resources; wherein the scheduling configuration includes a first control resource set (CORESET) and a combination of scheduling parameters for scheduling the PTM configuration and a configuration of each of at least one other common control channel; the at least one other common control channel includes at least one of a broadcast control channel (BCCH) and a paging control channel (PCCH).

Abstract: A user equipment (UE), a source base station, a target base station, and handover methods for UE MBS mobility with service continuity are provided. A handover method for UE MBS mobility with service continuity performed by the UE includes reporting, to a source base station, a handover control information and/or a measurement report when UE receiving an MBS data via MBS radio bearers (MRBs) from the source base station, receiving from the source base station, a handover command message containing an MBS DRB configuration of the source base station and/or a target base station, continuing receiving the MBS data from the source base station via the MRBs and/or unicast data radio bearers (DRBs), and releasing an MRB configuration and continuing receiving the MBS data from the target base station via the DRBs. This can support a UE MBS mobility with service continuity while receiving a multicast/broadcast service.

Abstract: A user equipment (UE), a base station, and wireless communication methods are provided. A wireless communication method performed by the UE includes indicating, to a base station, an interest on simultaneous reception of multicast/broadcast and unicast services in a same slot or different slots, being configured, from the base station, with a configuration for group scheduling via a downlink control channel, wherein the configuration for group scheduling carries a scheduling of multiplexed multicast/broadcast and unicast transmissions, and decoding the scheduling of the multiplexed multicast/broadcast and unicast transmissions to perform the simultaneous reception of the multicast/broadcast and unicast services in the same slot or the different slots. This can solve issues in the prior art, provide a group scheduling mechanism, reduce UE reception complexity, provide simultaneous reception of multicast/broadcast and unicast services, and/or provide a good communication performance.

Abstract: An apparatus and a method for optimal delivery of a multicast/broadcast service (MBS) are provided. A method of an MBS user equipment (UE) includes determining a first indication message to be transmitted to a network, wherein the first indication message includes a UE status associated with an MBS and/or a need for switching an MBS delivery mode. The method further includes receiving a second indication message carrying an optimal delivery mode configuration such as the scheduling information of the switched MBS delivery mode, the frequency, and/or identity of the neighboring cells or the areas that broadcast the same service that the UE is receiving before switching the delivery mode. This can solve issues in the prior art, provide a dynamic, reliable, and/or efficient MBS delivery mode switching, support service continuity, provide a good communication performance, and/or provide high reliability.

Abstract: A method for dynamic MBMS control is proposed for a network node in a MBSFN service area to provide MBMS services to one or more UEs. A telecommunication system and a UE implementing the method are also proposed. A plurality of indication messages are received from one or more UE. Each of the indication messages comprises an indication about the service type and/or the QoS information for one or more MBMS services. At least one control configuration is determined based on to the required one or more MBMS services. The at least one control configuration are transmitted to the UEs, so that the UEs are configured to efficiently receive the required service.

Abstract: A method for unicast, broadcast and multicast services executable by a user equipment (UE) is provided. The UE transmits an indication message to indicate a first intended service of a first traffic type and a second intended service of a second traffic type to the network. The first traffic type may be unicast traffic, and the second traffic type may be multimedia broadcast/multicast service (MBMS) traffic. The UE receives downlink configuration, which is generated by the network based on the indication message, and receives a downlink frame carrying the first intended service and the second intended service according to the downlink configuration.