Abstract: Embodiments of the present application are re-lated to a method and apparatus for multicast and broadcast services (MBS). According an embodiment of the present application, an exemplary method includes: receiving conditional handover (CHO) configuration information, wherein the CHO configuration information indicates a set of execution conditions for a set of candidate cells, each execution condition being associated with a candidate cell; and executing a CHO procedure to a target cell of the set of candidate cells in response to at least one of the set of execution conditions is met, wherein the target cell is determined based on the set of execution conditions and MBS information associated with CHO.

Abstract: Embodiments of the present disclosure relate to methods and apparatuses for wireless communication. According to some embodiments of the disclosure, a method may include: establishing a RRC connection between a first UE and a BS via a second UE, wherein a PC5 RRC connection between the first UE and the second UE has been established and an RRC connection between the second UE and the BS has been established; receiving, from either the first UE or the BS at a second UE, a first data; determining a destination of the first data; and transmitting the first data to the destination of the first data in response to the destination of the first data being not the second UE. In addition, the size information for each packet may be indicated in the header of an adaptation layer in response to multiple packets from the different UE bearers can be multiplexed to one PDU of the adaptation layer.

Abstract: Embodiments of this application disclose a cell access method and a device, to provide a network slice service area identifier and network slice configuration information for a terminal device, so that the terminal device accesses a target cell. The method in the embodiments of this application includes: obtaining, by a terminal device, a network slice service area identifier from a serving access network device corresponding to a serving cell in which the terminal device is located, where the network slice service area identifier is used to indicate an area served by a network slice; determining, by the terminal device, a target cell based on network slice configuration information and the network slice service area identifier, where the network slice configuration information includes a correspondence among a network slice, an area, and a service; and accessing, by the terminal device, the target cell.

Abstract: An information transmission method includes: A terminal device sends first information to a network device, where the first information includes information indicating that a radio link failure occurs between the terminal device and a first cell, or the first information includes information indicating that beam failure recovery occurs between the terminal device and the first cell; and the first information further includes information about a resource; and the network device performs mobility robustness optimization based on the first information.

Abstract: Disclosed are methods for a random access. One embodiment of the subject application provides a method performed by a gNB, including determining a user equipment (UE) to enter an RRC_INACTIVE state by a gNB central unit (gNB-CU), sending a UE context suspension indication and a UE identification (ID) of small data transmission (SDT) to at least one first gNB distributed unit (gNB-DU) by the gNB-CU, storing the UE ID of SDT and keeping a UE context of SDT by the at least one first gNB-DU, and treating the UE in the RRC_INACTIVE state and forwarding a radio resource control (RRC) release manage to the UE by the at least one first gNB-DU, wherein the UE context suspension indication is for indicating the at least one first gNB-DU to keep a the UE context of SDT in the RRC_INACTIVE state, and the UE ID of SDT is for identifying the UE context of SDT. Related apparatuses are also disclosed.

Abstract: Embodiments of the present disclosure provide a solution for operating radio bearers. According to embodiments of the present disclosure, a terminal device monitors a plurality of data packets transmitted from a network device on a radio bearer. If a reception of at least one data packet in the plurality of data packets is failed, the terminal device is able to discard the at least one data packet without requesting retransmission. The network device determines whether a retransmission condition for the at least one data packet is unfulfilled. If the retransmission condition is unfulfilled, the retransmission of the at least one data packet is skipped.

Abstract: Embodiments of the present application relate to methods and apparatuses for a secondary cell group (SCG) deactivation mechanism and a SCG activation mechanism in a multi-radio dual connectivity (MR-DC) scenario under a 3rd Generation Partnership Project (3GPP) 5G New Radio (NR) system or the like. According to an embodiment of the present application, a method can include: in response to detecting user data volume decrease or user data inactivity at a SCG, deciding to deactivate the SCG; and in response to deciding to deactivate the SCG, performing a SCG deactivation procedure.

Abstract: Embodiments of the present application are related to a method and apparatus for multicast and broadcast services (MBS). According an embodiment of the present application, an exemplary method includes: receiving a first MBS configuration; using the first MBS configuration for MBS data reception in a first radio resource control (RRC) state; and in response to a RRC state transition occurring, at least before entering a second RRC state from the first RRC state, continuing using the first MBS configuration for MBS data reception, or suspending MBS data reception.

Abstract: The present disclosure relates to a method and apparatus for transmission of control signals. The method is performed by a NodeB including a central unit (CU) and a distributed unit (DU). The method comprises transmitting a first channel indication and a first data unit from the CU to the DU, the DU transmitting the multicast and broadcast services (MBS) configuration to user equipment (UE) over a first channel indicated by the first channel indication, the DU receiving a first completion indication from the UE, and transmitting the first completion indication from the DU to the CU. The first data unit includes a MBS configuration.

Abstract: Embodiments of this application provide a wireless backhaul communication processing method and a related device. In the method, after determining to add a secondary access device for a wireless backhaul device, a first network side device sends capability indication information about the wireless backhaul device to the secondary access device, so that the wireless backhaul device establishes a radio link to the secondary access device.

Abstract: Embodiments of this application provide a communication processing method. A data volume report reported by a terminal device includes a data volume on one of at least two paths in a radio bearer in a duplication mode, so that signaling overheads in a data volume reporting process of the terminal device can be reduced.

Abstract: Embodiments of the present application relate to methods and apparatuses for a mobility robustness optimization (MRO) mechanism for a fast master cell group (MCG) link recovery procedure and an un-balanced uplink (UL) and downlink (DL) coverage scenario under a 3rd Generation Partnership Project (3GPP) 5G New Radio (NR) system or the like.

Abstract: Embodiments of the present application relate to methods and apparatuses for a relay reselection and data transmission handling procedure in a user equipment (UE)-to-network relay scenario under 3rd Generation Partnership Project (3GPP) 5G New Radio (NR). According to an embodiment of the present application, a method can include: establishing a Uu RRC connection of a link between the relay UE and a base station (BS); establishing a PC5 radio resource control (RRC) connection of a link between a UE and the relay UE; and transmitting a notification to the UE, wherein the notification is associated with at least one of: a radio link failure (RLF) of the link between the relay UE and the B S; a RLF recovery failure of the link between the relay UE and the B S; and a successful RLF recovery of the link between the relay UE and the BS. In response to receiving the notification, the UE may preform relay reselection and suspend the data transmission towards the BS.

Abstract: Embodiments of the present application relate to methods and apparatuses for a mobility robustness optimization (MRO) mechanism for a conditional handover (CHO) procedure. According to an embodiment of the present application, a method can include: receiving CHO configuration information for a user equipment (UE), wherein the CHO configuration information is associated with one or more CHO candidate cells and includes a set of execution conditions corresponding to the one or more CHO candidate cells; performing a handover (HO) procedure associated with a target cell, in response to receiving a handover command from a source cell or performing a CHO procedure associated with a CHO candidate cell, in response to meeting an execution condition of the CHO candidate cell; starting a timer for HO procedure or CHO procedure; and in response to successfully accessing the target cell or the CHO candidate cell, stopping the timer and transmitting assistant information to the target cell or the CHO candidate cell.

Abstract: Embodiments of the present application relate to a method and apparatus for multicast and broadcast services (MBS). An exemplary method includes: transmitting configuration information indicating a multicast data radio bearer (M-DRB) and a dedicated radio bearer (RB) both associated with a radio link control (RLC) entity; transmitting a set of RLC data packets to one or more user equipment (UEs) via the M-DRB in a point to multipoint (PTM) mode; and receiving feedback information for the set of RLC data packets via the dedicated RB of a UE of the one or more UEs. Embodiments of the present application can support feedback information and retransmission for a specific LIE in the PTM mode.

Abstract: A method for sending a synchronization signal in a relay system, and the method includes receiving, by a relay node, synchronization signal information sent by a parent node through an air interface, where the synchronization signal information comprises at least one of a subcarrier spacing of a synchronization signal, information about an operating frequency band of the relay node, information about a physical broadcast channel of the relay node, a synchronization signal periodicity, or indication information of a synchronization signal obtaining manner, and sending, by the relay node, the synchronization signal based on the synchronization signal information.

Abstract: Embodiments of this application provide a wireless communication method and apparatus. The method includes: receiving, by at least two forwarding nodes, a first data packet from a source node, where the first data packet includes service data, forwarding node set information of the first data packet, and destination node information; and a forwarding node set of the first data packet includes the at least two forwarding nodes, and the destination node information is used to identify a destination node set and/or a destination node; and sending, by at least one forwarding node in the at least two forwarding nodes, a second data packet, where the second data packet includes the service data, forwarding node set information of the second data packet, and the destination node information.

Abstract: Various aspects of the present application relate to methods and apparatuses for a relay reselection and connection handling procedure in a user equipment (UE)-to-UE relay scenario. A method includes establishing a PC5 radio resource control (RRC) connection of a first link between the UE and a relay UE, a RRC connection of a second link between the relay UE and another UE having been established. The method includes performing a relay reselection procedure based on a trigger condition as at least one of: detecting a sidelink failure; detecting a failure in a RRC relayed connection of a third link between the UE and the another UE; receiving a failure notification from the relay UE; or receiving a failure indication from an upper layer of the UE.

Abstract: Embodiments of the present disclosure relate to methods and apparatuses a data transmission and a radio access network based notification area update (RNAU) procedure of a user equipment (UE) in a radio resource control (RRC) inactive state. According to an embodiment of the present disclosure, a method includes: entering a RRC inactive state of a UE based on RRC configuration information; starting a timer for RNAU procedure; transmitting small data at the RRC inactive state of the UE; and in response to receiving response information corresponding to the transmitted small data, restarting the timer for RNAU procedure. The method further includes that the timer for RNAU procedure expires after the UE has triggered the small data transmission procedure. The UE may suspend the RNAU procedure. The UE may cancel or resume the RNAU procedure depending on the small data transmission procedure.

Abstract: Embodiments of the present application relate to methods and apparatuses for designing an adaptation layer and handling a failure 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: receiving a radio resource control (RRC) setup request from a user equipment (UE), wherein a PC5 RRC connection of a link between the UE and a relay UE has been established; transmitting a RRC setup request to a base station (BS), wherein a RRC connection of a link between the relay UE and the BS has been established; receiving response information from the BS, wherein the response information includes at least one of a cell radio network temporary identifier (C-RNTI) and an identifier (ID) of the UE; and transmitting the response information to the UE. A failure could happen after a relayed connection of a link between the UE and the BS being established.