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.

Abstract: The present application relates to methods and apparatuses for handling failure.

Abstract: Embodiments of the present disclosure relate to IP address management in an IAB network. According to some embodiments of the disclosure, a wireless network node may: receive an IP address configuration indicating an IP address of a second DU, wherein the wireless network node comprises a first DU associated with a first BS and the second DU associated with a second BS, and the wireless network node migrates from the first BS to the second BS, and wherein the IP address configuration is received from one of the first BS and the second BS or an OAM according to an IP address allocation scheme; and initiate an F1 interface setup with the second BS using the IP address of the second DU.

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 base station (BS) may: configure a cell(s) of a first wireless network node whether to support an access from or a handover of a mobile wireless network node or not; and perform an integration procedure with a first mobile wireless network node via the first wireless network node, wherein at least one cell of the first wireless network node is configured to support an access from or a handover of a mobile wireless network node and the first wireless network node is a parent node of the first mobile wireless network node after the integration procedure.

Abstract: Embodiments of the present application relate to methods and apparatuses for a conditional handover (CHO) with candidate secondary cell group (SCG) mechanism. 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, via the transceiver, a radio resource control (RRC) configuration and another RRC configuration, wherein the RRC configuration includes conditional handover (CHO) configuration information and a CHO execution condition for a candidate master cell group (MCG), and the another RRC configuration includes configuration information for one or more candidate secondary cell groups (SCG) sand a set of execution conditions for the one or more candidate SCGs; and evaluate the CHO execution condition for the candidate MCG upon reception of the RRC configuration.

Abstract: Embodiments of the present disclosure relate to method and apparatus for integrated access and backhaul (IAB) node migration. According to some embodiments of the disclosure, a base station (BS) may: determine whether there is an internet protocol (IP) connection between a second BS and a third BS, wherein one of the first BS and the second BS has a radio resource control (RRC) connection to a mobile termination (MT) of a wireless network node and the other one of the first BS and the second BS has an F1 connection to a distributed unit (DU) of the wireless network node; and initiate, based on the determination, a migration of the MT of the wireless network node to the third BS or a migration of the DU of the wireless network node to the third BS.

Abstract: Embodiments of this application provide a communication method, apparatus, and system. The method includes: determining, based on area configuration information of a first cell of a network device and location information of a terminal device, a first sub-area corresponding to the terminal device, where the area configuration information indicates information about a plurality of sub-areas corresponding to the first cell, and the plurality of sub-areas include the first sub-area; and obtaining satellite ephemeris information corresponding to the first sub-area. In the foregoing solution, the sub-area is introduced, and the terminal device only needs to obtain the satellite ephemeris information corresponding to the sub-area in which the terminal device is located. This reduces an amount of satellite ephemeris information obtained by the terminal device, and therefore can reduce overheads of the terminal device.

Abstract: The present application relates to a method and an apparatus for determining a prediction for a status of a wireless network. One embodiment of the present disclosure provides a method for determining a prediction for a status of a wireless network, comprising: transmitting a first request associated with the prediction to a first node and a second node; receiving information of a trained AI model from the second node; transmitting, to the first node, input for the trained AI model; and receiving the prediction from the first node, wherein the prediction is determined based on the trained AI model and the input.

Abstract: Embodiments of this application provide a communication method and a communication apparatus, and relate to the communication field. The method includes: A first network device receives a first report from a terminal device, where the first report includes first information, and the first information indicates that the terminal device passively falls back from 2-step random access to 4-step random access, or actively falls back from 2-step random access to 4-step random access. The first network device performs processing based on the first report.

Abstract: A communication method, apparatus, and system, the method including receiving first indication information from a first network device, where the first indication information is requests a terminal device to report first information, and reporting the first information to the first network device, where the first information includes related information in a conditional handover procedure.

Abstract: Embodiments of the present application relate to methods and apparatuses for handling a service belonging to a multicast broadcast service (MBS) at a radio access network (RAN) node 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 information relating to one or more on-going MBS associated with a UE at one or more RAN nodes; and receiving configuration information from another RAN node, so that at least some or all of data relating to at least one of the one or more on-going MB S associated with the UE can be provided by the abovementioned another RAN node.

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).