Abstract: Embodiments of the present application relate to a method and apparatus for multicast and broadcast services (MBS). An exemplary method includes: determining an association identity (ID) for associating a common layer entity with a first lower layer entity for a multicast data radio bearer (M-DRB) and a second lower layer entity for a unicast data radio bearer (U-DRB); and transmitting configuration information including the association ID. Embodiments of the present application can support dynamic change between the point to multipoint (PTM) mode mode and the point to point (PTP) mode mode while providing lossless and seamless transitions and/or handover between the PTM mode and the PTP mode.

Abstract: Embodiments of the present application relate to a method and apparatus for multicast and broadcast services (MBS). An exemplary method includes: transmitting a bearer context identity (ID) to identify a tunnel for a radio bearer (RB) and associate the tunnel with at least one of: a multicast data radio bearer (M-DRB); and at least one unicast data radio bearers (U-DRB). Embodiments of the present application can support multiple transmission modes, for example, the SC-PTM mode, the MC-PTM mode, and the unicast mode.

Abstract: Embodiments of the present disclosure relate to methods and apparatuses for reestablishment in a wireless communication system. According to some embodiments of the present disclosure, a method includes: receiving, at a user equipment (UE) from a first base station (BS), conditional reestablishment configuration information indicating a set of execution conditions for a set of candidate cells; and evaluating the set of execution conditions based on the conditional reestablishment configuration information in response to the reception of conditional reestablishment configuration information. The leaving indication is sent to the serving cell in response to the initiation of the conditional reestablishment. The RLF report is reported in response to the failure of conditional reestablishment or an RLF event when the conditional reestablishment is configured.

Abstract: The present disclosure relates to a method and an apparatus for multicast and broadcast services. A method for a handover of a user equipment (UE) from a first NodeB to a second NodeB and performed by the first NodeB. The method comprise: transmitting at least one first data packet to the UE; receiving, from a core network, an alignment indication.

Abstract: Disclosed are methods for multicast broadcast service. One embodiment of the subject application provides a method performed by a UE, comprising receiving data packets in a first cell in a first mode, sending a data receiving status report during or after a handover and/or during or after a data transmission mode switching, receiving missing data packets during the data transmission mode switching and/or during the handover, and receiving data packets in a second cell in a second mode. Related apparatuses are also disclosed.

Abstract: Embodiments of the present application relate to methods and apparatuses for a failure handling procedure in a sidelink relay system under 3rd Generation Partnership Project (3GPP) 5G New Radio (NR). According to an embodiment of the present application, a method can include: establishing a PC5 radio resource control (RRC) connection of a link between a user equipment (UE) and a relay UE, wherein a PC5 RRC connection of a link between the relay UE and another UE has been established; receiving a failure notification from the relay UE, wherein the failure notification indicates an occurrence of a failure on the link between the relay UE and the abovementioned another UE; monitoring a discovery resource pool upon receiving the failure notification from the relay UE, and reporting failure information associated with the relayed connection to a base station (BS).

Abstract: A fault determining method, includes: a first terminal device monitors a parameter of a sidelink between the first terminal device and a second terminal device, to determine whether a unicast connection on the sidelink satisfies a first condition; and when the unicast connection satisfies the first condition, the first terminal device determines that the unicast connection is faulty.

Abstract: This application discloses a communication method, a communications apparatus and a communications system, to resolve a problem that a terminal cannot quickly resume a communication connection to a secondary node. The method includes: sending a first message to a first master node to request state transition of a terminal from a third mode to a connected mode; receiving a second message from the first master node, where the second message comprises a first security parameter and SCG configuration information, and completing, based on the first security parameter and the SCG configuration information, a communication connection to the secondary node.

Abstract: Embodiments of the present application relate to methods and apparatuses for handling a conditional handover (CHO) condition in a non terrestrial network (NTN) environment.

Abstract: Embodiments of the present application relate to methods and apparatuses for a measurement report in a non terrestrial network (NTN) environment. According to an embodiment of the present application, a method can include: receiving a radio resource control (RRC) reconfiguration message, wherein the RRC reconfiguration message includes measurement configuration information; performing a measurement procedure based on the measurement configuration information; determining whether one or more reporting events are satisfied, wherein the one or more reporting events trigger to transmit a measurement report; and in response to satisfying a reporting event, transmitting the measurement report, wherein the reporting event is included in the measurement configuration information, and the reporting event can be a location based event or a combination of a measurement based event and a location based event.

Abstract: This application provides a flow control method and apparatus, and relates to the field of communications technologies. A relay device indicates flow control to an upper-level node to avoid spectrum resources waste because of excessively small amount of data transmission or an excessively large amount of data transmission from an upper-level node. The method includes: A first node determines to indicate a second node to perform flow control; and the first node sends a first flow control indication to the second node. The first flow control indication is carried in adaptation layer control signaling, an RLC control message, or a MAC CE. The first flow control indication includes identifiers of one or more bearers and flow control information. The second node is a relay node or a donor base station.

Abstract: A communication method relates to a paging mechanism applied for a radio access network, including: a centralized unit sends a paging message to a distributed unit, where the paging message carries indication information indicates that the paging is paging originated from a core network or the paging is paging originated from a radio access network; and the distributed unit determines, according to the indication information, that the paging is paging originated from the core network or the paging is paging originated from the radio access network.

Abstract: Embodiments of the present application are directed to a method and apparatus for reporting time information of conditional handover (CHO). In an embodiment of the present application, the method includes: receiving configuration information on CHO, and transmitting time information of CHO in response to at least one failure that occurs during a CHO procedure.

Abstract: A communication method and a related apparatus for data transmission in vehicle-to-everything (V2X) communication, the apparatus including at least one processor and a non-transitory computer-readable memory storing a program to be executed by the at least one processor, the program including instructions for obtaining a first parameter value of an uplink, obtaining a second parameter value of a sidelink, and transmitting, according to a comparison between the first parameter value and the second parameter value, at least one of an uplink media access control protocol data unit or a sidelink media access control protocol data unit, where the uplink is a wireless communications link from the apparatus to a network device, and where the sidelink is a wireless direct transmission link between the apparatus and another terminal device.

Abstract: Example methods and apparatus for application of a computing bearer is described. One example method includes establishing a first bearer and a second bearer by a first communication apparatus, where the first bearer is a computing bearer between the first communication apparatus and a second communication apparatus, and the second bearer is a computing bearer between the first communication apparatus and a first application. The first communication apparatus receives first data from the second communication apparatus over the first bearer, and forwards the first data over the second bearer. Additionally or alternatively, the first communication apparatus receives second data over the second bearer, and forwards the second data to the second communication apparatus over the first bearer.

Abstract: A method may be performed through the following steps: a first communication apparatus sends a data edge protocol (DEP) session establishment request message to a second communication apparatus, where the DEP session establishment request message is used to request to establish a DEP session between the first communication apparatus and a computing power, the DEP session is used to transmit data of a first application, the first communication apparatus, the second communication apparatus, and the computing power all have a function of a DEP layer, the DEP layer is located below a third layer of a wireless network protocol layer, and the DEP session is located at the DEP layer. The first communication apparatus receives configuration information of the DEP session from the second communication apparatus.

Abstract: A data transmission method to implement flexible switching of data transmission between different interfaces, includes: A first terminal obtains a quality of service flow identifier of the first terminal and a QoS parameter of a quality of service flow, where there is a correspondence between the quality of service flow identifier and the QoS parameter of the quality of service flow, and determines, based on the QoS parameter, a logical channel used by the quality of service flow on a PC5 interface. The first terminal maps the quality of service flow to the determined logical channel, and sends the quality of service flow to the second terminal.

Abstract: A core network delivers two sets of quality of service (QoS) parameters to an access network device. The access network device selects one of the two sets of QoS parameters, and indicates the selected set of QoS parameters to the core network. An air interface rate required by the set of QoS parameters can be supported by a radio access network (RAN). In this way, a QoS parameter applied to a related user equipment (UE), a related bearer, a related packet data unit (PDU) session, or a related QoS flow can be effectively determined, and a hardware capability of an LTE base station does not need to be upgraded. In addition, the core network may set, based on a QoS parameter selected by a RAN side, a corresponding QoS management policy such as a rate adjustment policy, to facilitate data transmission between UE and the core network.

Abstract: An IAB node switching method is applied to a relay system, and the relay system includes a donor base station and a first IAB node. The donor base station provides a gateway function for the first IAB node. The first IAB node receives a first BWP configuration from the donor base station, where the first BWP configuration includes a BWP configuration of a second IAB node, and the second IAB node is a candidate upper-level node of the first IAB node. The first IAB node switches to the second IAB node. According to the IAB node switching method, the IAB node, and the donor base station that are provided in this application, service availability of an IAB node is ensured when the IAB node has a plurality of upper-level nodes.

Abstract: The present disclosure relates to connection reestablishment methods and apparatus. In one example method, when a handover fails, a terminal reverts back to a source configuration, and obtains a selected cell. The terminal sends a connection reestablishment request to a selected radio access network device. The terminal receives a first message from the selected radio access network device, where the first message includes indication information used to indicate to derive an access network key based on a core network key. The terminal obtains a first core network key based on the indication information, and derives a first access network key based on the first core network key. The terminal communicates with the selected radio access network device by using the first access network key.