Abstract: Embodiments of the present application relate to methods and apparatuses for deactivating and activating a secondary cell group (SCG) 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 determining to activate a SCG, transmitting state information for one or more secondary cells (SCells), wherein the one or more SCells are associated with the SCG; and in response to determining to deactivate the SCG, transmitting the state information for the one or more SCells and transmitting configuration information regarding a behaviour of a user equipment (UE).

Abstract: Embodiments of the present disclosure relate to methods and apparatuses for coverage extension and wireless communication. According to some embodiments of the disclosure, a method may include: receiving from a base station (BS) a message comprising an indication that a drone-based relay or vehicle-based relay is supported by the BS, wherein the mobile terminal is allowed to serve as a relay node between the BS and a user equipment (UE); and in response to receiving the indication indicating that a drone-based relay or vehicle-based relay is supported by the BS, performing a random access procedure with the BS. In addition, the mobile terminal may report the assistant information, e.g., the remaining power information, to the BS.

Abstract: This application provides a communication method, a communication apparatus, and a terminal device. The method includes a first node that receives a first message of a terminal device that requests to associate the terminal device with the first node. The first node obtains information about a second node, where the second node is a group header of an upper layer group in which the terminal device is located. The first node performs data transmission as a relay between the terminal device and the second node. According to a solution provided in this application, the terminal device can perform normal communication.

Abstract: A first terminal device obtains a first parameter related to a first air interface, and then determines, based on the first parameter, that first frequency information of a second air interface has a highest priority, where the first air interface is a radio interface between the first terminal device and a second terminal device, and the second air interface is a radio interface between the first terminal device and a network device.

Abstract: The technology of this application relates to a relay communication method. After receiving first information sent by a first terminal device, a first radio access network device may determine, based on the first information, a second terminal device that provides, in a target cell, a relay service for the first terminal device, where the first information is used to indicate that the first terminal device is a terminal device with limited uplink power. The first radio access network device sends second information to a second radio access network device, where the second information is used to indicate the second terminal device that provides, in the target cell, the relay service for the first terminal device.

Abstract: A method for performing random access includes: performing a 2-step RA procedure with a BS (S401); receiving a fallback RAR from BS (S404); performing a 4-step RA procedure with BS (S405); and associating a 2-step RA information of the 2-step RA procedure with a 4-step RA information of the 4-step RA procedure (S407).

Abstract: Example configuration methods and apparatus are described. An example communications system includes a master node and a secondary node that jointly provide a service for a terminal. One example method includes generating configuration information for a signaling radio bearer (SRB) by the secondary node, where the SRB is used to transmit a radio resource control (RRC) message between the secondary node and the terminal. The secondary node sends the configuration information for the SRB to the master node, so that the configuration information for the SRB is sent to the terminal through the master node. The secondary node receives a result of configuring the SRB by the terminal by using the configuration information for the SRB. In this way, the SRB can be established on the secondary node, and used for RRC message transmission between the secondary node and the terminal.

Abstract: Embodiments of the present disclosure relate to methods and apparatuses for path switch in a wireless communication system. According to some embodiments of the disclosure, a method may include: receiving, at a UE, an RRC reconfiguration message from a BS via a source Uu link, wherein the RRC reconfiguration message includes a path switch indication indicating a switch to a target relay; and in response to the RRC reconfiguration message, transmitting an RRC reconfiguration complete message to the BS via the target relay, initiating a reestablishment procedure over a Uu interface, or falling back to the source Uu link. The method may further include: in response to the RRC reconfiguration message, detaching or maintain the source Uu link.

Abstract: Embodiments of the present disclosure relate to Multicast and Broadcast Service (MBS) services. The method includes receiving configuration information from a network device, the configuration information relating to a multicast and broadcast service (MBS) service provided in one or more serving cells. The method also includes receiving downlink control information from the one or more serving cells in which the MBS service is provided. The method further includes receiving the MBS service that is provided in the one or more serving cells based on the downlink control information.

Abstract: This application provides a communication method, apparatus, and system. The method includes: determining first information, where the first information includes one or more types of information about an associated beam for a random access success of the terminal device, or, information about an associated uplink carrier for a random access success of the terminal device, and/or includes information about a random access channel RACH resource for a random access failure of the terminal device, and the random access failure of the terminal device includes one or more of a 2-step random access failure, a 4-step random access failure, a dedicated RACH resource random access failure, or a common RACH resource random access failure; and sending the first information.

Abstract: Disclosed are methods and apparatus for artificial intelligence (AI) application in radio access network (RAN). One embodiment of the subject application provides a method performed by a training host (or a wireless network node including a training host) includes receiving a request associated with a wireless network activity, identifying a primary processing model for accomplishing the wireless network activity, and transmitting first information associated with the primary processing model to a second wireless network node to accomplish the wireless network activity, herein the first wireless network node is capable of identifying the primary processing model from a plurality of processing models to accomplish the wireless network activity.

Abstract: A communication method for data transmission in the internet of vehicles V2X and a related device. The method includes a first terminal device that receives first information from a first radio access network device, where the first information includes service information of a service of the first terminal device and a resource configuration mode on a sidelink, and there is a correspondence between the service information and the resource configuration mode on the sidelink. The first terminal device transmits, based on the correspondence, data corresponding to the service information on a sidelink transmission resource configured based on the resource configuration mode. The service information may be reliability information.

Abstract: Embodiments of the present application are related to a method and apparatus for data transmission. An exemplary method of the present application includes: generating a first physical data unit (PDU) based on first key information from a wireless network while a terminal device is in a non-connected state with the wireless network; receiving a second key information from the wireless network; generating a second PDU from the generated first PDU based on the second key information; and transmitting the generated second PDU within the wireless network.

Abstract: Embodiments of the present application relate to methods and apparatuses for multicast and broadcast services (MBS). An exemplary method performed by a node of a wireless network to provide a multicast and broadcast service (MBS) associated with a user equipment (UE) of the wireless network may include: determining whether to activate or deactivate a point-to-point (PTP) mode to provide the MBS to the UE; and transmitting a data transmission indication via a user plane protocol of a network interface in the wireless network to activate or deactivate the PTP mode. Embodiments of the present application can support more efficient dynamic switching between PTP mode and point-to-multipoint (PTM) mode for MBS and/or distinguish new transmission data and retransmission data for MBS.

Abstract: Embodiments of the present application relate to methods and apparatuses for a configuration replace operation in a conditional primary cell of a secondary cell group (PSCell) addition and change (CPAC) procedure under a 3rd Generation Partnership Project (3GPP) 5G system or the like. According to an embodiment of the present application, a method performed by a radio access network (RAN) node can comprises: receiving configuration information relating to a CPAC procedure; and in response to the configuration information relating to the CPAC procedure being modified, communicating the modified configuration information with another RAN node via a Xn interface or a X2 interface.

Abstract: The present application relates to a method and an apparatus for performing a handover procedure. One embodiment of the subject application provides a method, which includes: receiving a configuration signaling including first configuration information or second configuration information; determining a first target primary cell (PCell) based on the configuration signaling; and performing a handover procedure to the first target PCell.

Abstract: Embodiments of the present application relate to methods and apparatuses for a beam failure detection and recovery procedure in a deactivated secondary node (SN) case in a multi-radio dual connectivity (MR-DC) scenario under a 3rd Generation Partnership Project (3GPP) 5G system or the like. According to an embodiment of the present application, a method can include: receiving configuration information relating to at least one of a beam failure detection (BFD) procedure and a beam failure recovery (BFR) procedure; and receiving a deactivation indication associated with a SN of the UE, or determining an expiry of a timer associated with deactivating the SN of the UE, wherein the deactivation indication is included in at least one of: a radio resource control (RRC) message; and a deactivation medium access control (MAC) control element (CE).

Abstract: Embodiments of the present application relate to methods and apparatuses of an enhanced mechanism for a deactivated or dormant secondary node (SN) 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 may be performed by a user equipment (UE) and can include: receiving configuration information from a serving cell, wherein the configuration information indicates to the UE an activated or a deactivated state of a secondary node (SN); and in response to receiving the configuration information indicating the activated state of the SN of the UE, receiving a deactivation indication or determining an expiry of a timer associated with deactivating the SN of the UE.

Abstract: This application provides a transmission method and a data transmission apparatus, so as to avoid out-of-order of data packets.

Abstract: Embodiments of the present disclosure relate to methods, apparatuses, and media for indicating Listen Before Talk (LBT) failure. A method performed by a terminal device comprises determining whether at least one consistent Listen Before Talk, LBT, failure is triggered on a set of resources associated with a data transmission between a network device and the terminal device in Radio Resource Control (RRC) non-connected state; in accordance with a determination that at least one consistent LBT failure is triggered, generating an indication of the at least one consistent LBT failure for the data transmission in the RRC non-connected state; and transmitting the indication to the network device. In this way, the format and signaling of consistent LBT failure indication for data transmission in the RRC non-connected state is designed and the transmission of the indication can be performed in various state of the terminal device.