Abstract: Provided in the present invention are user equipment and a method thereof, and a base station and a method thereof. The method in user equipment comprises: receiving a switching MAC CE from a base station; and activating and/or deactivating an RLC entity and/or a logical channel associated with a bearer that supports the PDCP duplication based on the switching MAC CE.

Abstract: Provided in the present invention are a method performed by user equipment and user equipment. The method performed by user equipment includes: receiving a coordination request in a first resource pool, determining a coordination resource set in a second resource pool, and transmitting, in a third resource pool, a coordination message as a response to the coordination request, wherein the coordination message includes an indication for the coordination resource set, and the first resource pool, the second resource pool, and the third resource pool are the same resource pool.

Abstract: A data transmission method, wherein when small data arrives, user equipment (UE) in a radio resource control inactive state RRC_INACTIVE can establish a communication with a base station without entering an RRC connected state, so as to perform small data transmission (SDT). An RNAU timer for controlling a periodic radio access network (RAN) based notification area update is set for the base station. For the SDT, an SDT timer for SDT small data transmission is set. A small data transmission data radio bearer (DRB) is configured for the user equipment. When an RRC resume procedure is triggered by arrival of data at the DRB, a high layer triggering small data transmission, or the like, the user equipment starts the SDT timer.

Abstract: Provided in the present invention are a QoS splitting method, a QoS carrying method, and an object side QoS determination method performed by user equipment to guarantee sidelink relay quality of service, and corresponding user equipment.

Abstract: The present disclosure provides a method performed by user equipment, comprising: receiving a timing advance command in a slot n; and determining, according to the slot n in which the timing advance command is received and/or other information related to an uplink transmission timing adjustment, time to apply the uplink transmission timing adjustment.

Abstract: Provided in the present invention are a method performed by user equipment, and user equipment. A method performed by user equipment, in which user equipment (UE) configured with dual connectivity or multi-connectivity performs configuration management on a secondary cell group (SCG) in a deactivated state during communication with a master cell group (MCG) and the SCG, includes the following steps: receiving, by the UE, an RRC connection reconfiguration message transmitted by a base station to the UE, the RRC connection reconfiguration message including a dedicated cell configuration for an SCG and a synchronization indication, wherein the SCG corresponding to the dedicated cell configuration is a target SCG, a primary serving cell (PSCell) thereof is a target PSCell, and an SCG/PSCell serving the UE before the reconfiguration message is received is a source SCG/source PSCell; and performing, by the UE, different PSCell change operations according to different states of the target SCG or the target PSCell.

Abstract: A method performed by a base station (BS) is provided. The method receives, from a user equipment (UE), a message indicating that the UE is capable of performing a conditional handover. The method then transmits, to the UE, a set of one or more conditional handover configurations. Each conditional handover configuration in the set of conditional handover configurations includes information associated with a corresponding candidate cell, and a handover condition comprising a measurement event based on a signal quality of at least one of a serving cell and the corresponding candidate cell.

Abstract: Provided in the present invention are a method performed by user equipment, and user equipment. A method performed by user equipment is a method of an RRC connection re-establishment procedure performed by user equipment (UE), and includes the following steps: triggering or initiating, by the UE, an RRC connection re-establishment procedure; during initiation of the RRC connection re-establishment procedure, starting, by the UE, a timer T311, and performing cell selection or relay selection; and in the case that the UE has selected a suitable cell or the UE has selected a suitable relay, stopping, by the UE, T311, wherein the suitable cell is a cell of which a measured value or a level value meets a cell selection rule, and the suitable relay is a relay of which a measured value or a level value meets a relay selection rule.

Abstract: Provided in the present invention are a processing method for a relay UE and user equipment. In the processing method for a relay UE, the relay UE serves a remote UE, and the processing method includes: the relay UE receiving a paging message transmitted from a base station, and confirming a UE identity in the received paging message; the relay UE obtaining a UE identity of the remote UE from an upper layer or an RRC layer of the relay UE; the relay UE determining whether the received paging message includes the UE identity of the remote UE; and if the paging message includes the UE identity of the remote UE, the relay UE generating a paging indication that includes the UE identity of the remote UE or indicates that the UE identity of the remote UE has been received.

Abstract: Provided in the present invention is a method performed by user equipment (UE), the method including: determining a location of a receiving bandwidth according to a configuration parameter; and receiving a signal within the receiving bandwidth, the configuration parameter including a bandwidth location of a synchronization signal block (SSB) and/or a bandwidth location of a control resource set (CORESET).

Abstract: Provided in the present disclosure are a wireless connection control method and user equipment. The wireless connection control method includes: user equipment (UE) receiving indication information including one or more multicast and broadcast service (MBS) services; the UE determining, on the basis of the indication information, whether an MBS service of interest to the UE is present; and if an MBS service of interest to the UE is present, the UE triggering a radio resource control (RRC) connection establishment/resume procedure.

Abstract: Provided in the present disclosure are a discontinuous reception method and user equipment. The discontinuous reception method includes: user equipment (UE) receiving configuration information or scheduling information related to a multicast and broadcast service (MBS) service; the UE determining whether a discontinuous reception (DRX) configuration is configured in the configuration information or the scheduling information; and if no DRX configuration is configured in the configuration information or the scheduling information, the UE employing a DRX configuration corresponding to unicast for reception of the MBS service.

Abstract: Provided in the present disclosure are a bandwidth configuration method and user equipment. The bandwidth configuration method is performed by user equipment (UE), and the UE is configured to support or allow inactive state data transmission. The method includes the following steps: after the UE enters an inactive state, if a required condition for inactive state data transmission thereof is fulfilled, the UE activating an uplink bandwidth part (UL BWP) for inactive state data transmission (IDT); and after transmitting uplink data, the UE receiving response information transmitted by a base station side.

Abstract: Provided in the present invention are a method performed by user equipment, and user equipment. The method includes: receiving a PSCCH and a corresponding PSSCH of the PSCCH transmitted by another sidelink user equipment; and determining a sidelink phase-tracking reference signal (PT-RS) sequence.

Abstract: Provided are a method executed by user equipment (UE), UE, and a base station. The method includes: receiving from the base station a first Radio Resource Control (RRC) message containing a handover command; storing a handover configuration included in the first RRC message; and managing the handover configuration. Before receiving the RRC message containing the handover command, the UE still maintains communication with a source base station before a handover is executed, thus shortening data transmission interruption time.

Abstract: The present disclosure provides a radio link failure reporting method and user equipment. The radio link failure reporting method includes: detecting, by user equipment (UE), occurrence of a radio link failure (RLF); and storing, by the UE, radio link failure information in an RLF report, wherein if the UE has performed a handover procedure before the RLF, the radio link failure information includes: information for indicating the type of the handover procedure; a global cell identity and a tracking area code of a cell where the latest handover command was received; and an elapsed time starting from reception of the latest handover command.

Abstract: Provided in the present invention is a method performed by user equipment, and user equipment.

Abstract: Provided by the present disclosure are an access control method in a user equipment and the user equipment, which may flexibly control the activation and deactivation of PDCP duplication and the activation and deactivation of a serving cell restriction. The access control method comprises: receiving configuration information related to a data radio bearer (DRB); receiving a media access control element (MAC CE) indicating the activation/deactivation of a packet data convergence protocol layer (PDCP) duplication function of the DRB; when the MAC CE indicates the deactivation of the PDCP duplication function, determining whether the configuration information comprises indication information, the indication information indicating a restriction relationship between a logical channel associated with the DRB and a serving cell which is allowed to be used; and determining a serving cell used for the logical channel according to the result of the determination.

Abstract: According to the present invention, provided are a method performed by user equipment and user equipment. The method includes: acquiring configuration information related to a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook, the configuration information including a first HARQ-ACK codebook parameter, a second HARQ-ACK codebook parameter, and a third HARQ-ACK codebook parameter; and determining, according to the configuration information related to the HARQ-ACK codebook, a HARQ-ACK codebook type related to sidelink (SL) transmission, wherein if the second HARQ-ACK codebook parameter has been configured, the first HARQ-ACK codebook parameter is applied and the second HARQ-ACK codebook parameter is ignored, and if the third HARQ-ACK codebook parameter has been configured, the first HARQ-ACK codebook parameter is applied and the third HARQ-ACK codebook parameter is ignored.

Abstract: A control method for User Equipment (UE) comprising: performing communication with a master cell group (MCG) and a secondary cell group (SCG); detecting whether a failure occurred in the MCG transmission; if it is detected that the failure has occurred in the MCG transmission, executing an MCG failure processing operation; and sending a message to a base station, the message indicating information related to the failure.