Abstract: Methods and apparatuses are provided for supporting connectivity of multiple secondary nodes (SNs) (103) in a multi-radio dual connectivity (MR-DC) scenario under a 3rd Generation Partnership Project (3GPP) 5G system or the like. A method can be performed by a network device, e.g., a master node (MN) in a MR-DC scenario and can include: determining whether to support a quality of service (QoS) flow terminated at one SN or whether to support a further QoS flow terminated at multiple SNs simultaneously (401A); in response to supporting the QoS flow, determining that the QoS flow is terminated at a SN and the QoS flow uses a radio resource of a secondary cell group (SCG) at a further SN (402A); and in response to supporting the further QoS flow, transmitting, to a core network (CN) node, information regarding a current serving SN of the futher QoS flow (403A).

Abstract: A method of supporting quality of experience (QoE) measurement collection may include: receiving first QoE configuration information from a first RAN node; receiving second QoE configuration information from a second RAN node; and transmitting duplication indication information to at least one of the first RAN node or the second RAN node in response to that the first QoE configuration information and the second QoE configuration information are associated with a same QoE measurement, wherein, the duplication indication information indicates that at least one of the first QoE configuration information or the second QoE configuration information is ignored due to the first and the second QoE configuration information being duplicated.

Abstract: The present application relates to of methods and apparatuses of supporting L1/L2-triggered mobility (LTM) cell switch. An embodiment of the present disclosure provides a user equipment (UE), which includes: a transceiver; and a processor coupled with the transceiver and configured to: obtain information indicating at least one candidate cell configuration, wherein each candidate cell is configured with at least one timer associated with random access channel (RACH) or RACH-skip; receive indication information associated with an LTM cell switch to a first candidate cell; and determine whether to perform an LTM cell switch with a RACH procedure or an LTM cell switch without a RACH procedure to the first candidate cell.

Abstract: Embodiments of the present application relate to methods and apparatuses for uplink (UL) synchronization before performing cell change under a 3rd Generation Partnership Project (3GPP) 5G system or the like. According to an embodiment of the present application, a user equipment (UE) includes a transceiver and a processor coupled to the transceiver, and the processor is configured to receive a radio resource control (RRC) reconfiguration message associated with one or more candidate cells via the transceiver; perform one or more random access (RA) procedures to the one or more candidate cells for getting timing advance (TA), in response to reception of the RRC reconfiguration message; and switch from a source cell to one candidate cell within the one or more candidate cells, in response to reception of an indication associated with the one candidate cell via the transceiver from the source cell.

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: Embodiments of the present application are related to a method and apparatus of supporting network optimization. An exemplary method includes: transmitting, from a first RAN node to a second RAN node, a first message requesting first information related to network optimization operations associated with at least one cell of the first RAN node, wherein each network optimization operation is related to a cell of the at least one cell; receiving, from the second RAN node, at least a second message in response to the first message; and determining how to perform network optimization at least based on the second message before or after handovers in each cell of the at least one cell.

Abstract: Embodiments of the present disclosure relate to a solution for collecting UE related measurement in dual connectivity. In a solution in accordance with the embodiments of the present disclosure, a network device comprises a processor and a transceiver coupled to the processor. The processor is configured to: transmit, via the transceiver, a first message to request user equipment (UE) related measurement; transmit, via the transceiver, a second message as a part of a dual connectivity procedure for UE to trigger a provision of the UE related measurement for the UE; and in response to completion of the dual connectivity procedure, receive, via the transceiver, a third message that includes the requested UE related measurement related to the dual connectivity procedure. Therefore, the UE related measurement for the UE may be collected in the dual connectivity. The UE related measurement may be provided to the network device to improve network operations.

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 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 are related to a method and apparatus for multicast and broadcast services. An exemplary method of the present application includes: receiving multicast and broadcast services (MBS) data associated with a user equipment (UE) in a first node, wherein the MBS data is delivered via a shared delivery mode in a wireless network; receiving, in the first node, handover acknowledge information from a second node, the handover acknowledge information indicating that a handover request associated with the UE is allowed; and determining, in the first node, whether to forward the MBS data to the second node by the first node, in response to receiving the handover acknowledge information from the second node.

Abstract: Embodiments of the present disclose a wireless communication in an IAB network. The method performed by an IAB node may include: transmitting, to a first IAB donor, a first resource configuration for a mobile terminal (MT) of the IAB node, wherein a distributed unit (DU) of the IAB node is connected to the first IAB donor and the MT of the IAB node is connected to or is for handing over to the second IAB donor; and receiving, from the first IAB donor, a second resource configuration for the DU of the IAB node, wherein the second resource configuration is determined based on the first resource configuration.

Abstract: Embodiments of the present application relate to methods and apparatuses (900) of a failure handling mechanism for conditional handover (CHO). According to an embodiment of the present application, a user equipment (UE 101) includes a transceiver (902) and a processor (906) coupled to the transceiver (902); and the processor (906) is configured to: receive a conditional handover (CHO) configuration associated with a target master cell group (MCG) and a target secondary cell group (SCG) via the transceiver (902), wherein the CHO configuration includes a CHO execution condition for the target MCG, and wherein the target SCG is same as or different from a source SCG of the UE (201); evaluate the CHO execution condition for the target MCG (202); and perform a CHO procedure to the target MCG, in response to fulfillment of the CHO execution condition for the target MCG (203).

Abstract: Embodiments of the present disclosure relate to network devices, a terminal device, and methods performed by the network devices and/or the terminal device. In an aspect, a first network device determines a conditional handover (CHO)-only configuration, wherein the CHO-only configuration does not support a terminal device to perform a conditional primary secondary cell addition or change (CPAC) in a multi-radio dual connectivity (MR-DC) environment. The first network device transmits, to the terminal device, the CHO-only configuration for deployment by the terminal device in the event that a CPAC execution condition in the MR-DC environment is not fulfilled by the terminal device. In this way, the communication reliability and efficiency may be improved.

Abstract: Embodiments of the present application relate to methods and apparatuses of a mobility robustness optimization (MRO) mechanism for a mobility procedure, for example, a MRO mechanism for a conditional handover (CHO) procedure, or a MRO mechanism for a conditional primary secondary cell group cell (PSCell) change/conditional PSCell addition (CPC/CPA) procedure, or a MRO mechanism for a CHO including target master cell group (MCG) and candidate secondary cell groups (SCG) s for CPC/CPA procedure. According to an embodiment of the present application, a network node includes a transceiver and a processor coupled to the transceiver, and the processor is configured to cause the network node to: obtain information of a cell for recovering a failure, when the failure occurs in one of the following: a CHO procedure, a conditional PSCell addition or change (CPAC) procedure, and a CHO including target MCG and candidate SCGs for CPC/CPA procedure; and perform analysis for the failure.

Abstract: A communication method and apparatus are provided. The method includes: A source network device generates and sends a first message, where the first message is for handing over a terminal device from the source network device to a target network device, the first message includes first indication information, and the first indication information indicates to perform a random access-free process and/or a handover complete message-free process in a handover process. In this way, if cell jump occurs in a source cell, the terminal device may not perform a random access process and/or not send a handover complete message in a process of handover from the source cell to a target cell. This avoids uplink congestion of the target cell caused by simultaneous handover of a plurality of UEs to the target cell, effectively reduces signaling overheads, and improves network performance of a target base station.

Abstract: A mobility optimization method and a related apparatus are provided. The method includes: determining connection failure information; and sending the connection failure information and an identifier of a first cell to a first network device by using a radio resource control (RRC) message, wherein the identifier of the first cell comprises an identifier of a cell from which a reconfiguration message or a handover command message received by the terminal device comes or an identifier of a cell in which a connection failure occurs, wherein the connection failure information is in a form of a container in the RRC message and the identifier of the first cell is outside the container.

Abstract: Embodiments of this application provide a communication method, device, and system, to reduce energy consumption of a terminal device and accelerate reselection performed by the terminal device. In this solution, a network device determines a plurality of sub-areas, and sends area configuration information to the terminal device. The terminal device receives the area configuration information, determines a first sub-area based on the area configuration information, and performs measurement based on information about one or more neighboring frequencies corresponding to the first sub-area. A geographical area range including the plurality of sub-areas includes a coverage area of a first cell, the area configuration information indicates information about the plurality of sub-areas, and the first sub-area is a sub-area in which the terminal device is currently located in the plurality of sub-areas.

Abstract: Embodiments of the present disclosure relate to a method and apparatus for communicating in an integrated access and backhaul (IAB) network. According to some embodiments of the disclosure, a first base station (BS) may: receive a transport migration management (TMM) request message from a second BS, wherein the TMM request message may include an identifier associated with a wireless network node for the first BS to identify the wireless network node; and transmit a TMM response message to the second 2024/087520 BS in response to receiving the TMM request message, wherein a mobile termination (MT) of the wireless network node hands over from a third BS to the first BS and a distributed unit (DU) of the wireless network node has an F1 connection to the second BS, or wherein the DU of the wireless network node migrates from a fourth BS to the second BS and the MT of the wireless network node has a radio resource control (RRC) connection to the first BS.

Abstract: Embodiments of the present application relate to methods and apparatuses for a conditional handover (CHO) with a candidate secondary cell groups (SCG)s for conditional primary secondary cell group cell (PSCell) change (CPC)/conditional PSCell addition (CPA) procedure. According to an embodiment of the present application, a user equipment (UE) includes a transceiver and a processor coupled to the transceiver; and the processor is configured to cause the UE to: receive radio resource control (RRC) configuration information for a CIIO with candidate secondary cell groups (SCG)s for conditional primary secondary cell group cell (PSCell) change (CPC)/conditional PSCell addition (CPA) procedure; and access the candidate PCell based on the RRC configuration information.

Abstract: Embodiments of the present disclosure relate to devices and methods for supporting layer 1 measurement-based layer 1 or layer 2 triggered mobility. A first network device obtains a channel state information (CSI) resource set associated with one or more candidate cells for at least one Layer 1 (L1) measurement, wherein the CSI resource set is to be used by a terminal device to perform the at least one L1 measurement; and transmit, via the transceiver to a second network device serving the terminal device, information indicative of the CSI resource set. In this way, the L1 measurement report may not support the L1 measurement-based LTM.