Cell handover method and apparatus, RRC reestablishment method and apparatus, medium and UE are provided. The cell handover method includes: receiving conditional handover command information from a base station, wherein the conditional handover command information includes a handover trigger condition, selecting a target cell from a plurality of candidate target cells that satisfy the handover trigger condition based on priority information, wherein the priority information includes priority levels of the plurality of candidate target cells; and performing a cell handover operation from a current serving cell to the target cell. The RRC reestablishment method includes: if RRC reestablishment is triggered, performing cell selection, and determining a target access cell from a plurality of cells searched in the cell selection based on priority information, and performing the RRC reestablishment in the target access cell, wherein the priority information includes priority levels of the plurality of cells used for conditional handover.

A method for an active call handover, including: receiving, at a mobile network operator (MNO), a handover request to transfer an active call, which is currently active between a first user equipment (UE) and a third-party device, from the first UE to a second UE; sending, by the MNO, a first invitation message to the second UE and a second invitation message to the third-party device; and transferring the active call from the first UE to the second UE.

A method for implementing handover of a multicast broadcast service includes: receiving a handover complete indication transmitted by a target base station, the handover complete indication being used for indicating that a user equipment has been handed over to the target base station; and triggering establishment of a PDU session on a target base station side in response to a determination that the target base station does not support the MBS, S-NSSAI of the PDU session being the same as S-NSSAI of the activated MBS session, and a DNN of the PDU session being the same as a DNN of the activated MBS session, so that a quality of service flow corresponding to the activated MBS session is established in the PDU session, and there being one or more quality of service flows.

Embodiments of the present disclosure provide an information configuration method and apparatus, and a communication device. The method includes: transmitting, by a Master Node (MN), a first request message to a Secondary Node (SN), wherein the first request message is used to request for configuring a conditional Primary Secondary Cell (PSCell) change; receiving, by the MN, a first response message transmitted by the SN, wherein the first response message is used for indicating that the SN accepts the first request message; and transmitting, by the MN to a terminal device, at least one of a PSCell change condition configuration, a target PSCell configuration, and a radio resource configuration on an MN side.

A network handover method and a terminal device, the method including obtaining, by a terminal device, a link quality parameter of a data link of the terminal device, determining that a 5G system accessed by the terminal device is unavailable in response to the link quality parameter meeting a specified condition, and handing over from the 5G system to a non-5G system in response to the 5G system being unavailable, where the link quality parameter includes quantities of uplink and downlink data packets received in a duration, and here the specified condition comprises the quantity of downlink data packets received in the duration by exceeding a first threshold and a quantity of sent uplink data packets being 0, or a quantity of uplink data packets sent in the duration exceeding a second threshold and the quantity of received downlink data packets being 0.

There is provided method for managing network resources by switching the slice used to support a user equipment (UE), in a process referred to as slice handover or slice switching. There are several reasons why a slice handover may be implemented, include movement of the UE and network load balancing. Further the UE can be switched to a new slice operated by the same service provider (intra-operator handover) or a different service provider (inter-operator handover).

A cell reselection method includes generating, by a radio access network device, cell reselection information, wherein the cell reselection information includes an identifier of at least one carrier frequency and an identifier of a network slice supported by each of the at least one carrier frequency. The cell reselection method further includes sending, by the radio access network device, the cell reselection information to a terminal device, wherein the cell reselection information is useable by the terminal device for cell reselection.

Sessions in progress are seamlessly moved between devices of a software platform. Proximity-based session handovers are performed between devices of the software platform utilizing short range signals. The short range signals include a frequency signature. The frequency signature is associated with a vehicle. A handover a session in progress from a mobile device to the vehicle is performed based on the detection of a short range signal.

A switching control method includes: receiving a trigger message for triggering a service scheduling server to reschedule a service server for user equipment; rescheduling, in response to the trigger message, the service server for the user equipment; transmitting an impact routing request to a core network accessed by the user equipment, the impact routing request being used for triggering the core network to change a user plane path of the user equipment; and transmitting an Internet Protocol (IP) address of the rescheduled service server to the user equipment, to trigger the user equipment to switch a currently accessed service server to the rescheduled service server.

Disclosed are a communication technique which merges, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of after a 4G system, and a system therefor. The present disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail, security- and safety-related services, and the like) on the basis of 5G communication technology and IoT-related technology. The present disclosure relates to an operation method of a terminal in a wireless communication system and, particularly, to a method and a device for performing same, the method comprising the steps of: generating master cell group (MCG) failure information, transmitting the MCG failure information to a base station of a secondary cell group (SCG), receiving a radio resource control (RRC) reconfiguration message from the base station, and transmitting an RRC reconfiguration completion message on the basis of the RRC reconfiguration message, wherein, if the RRC reconfiguration message is included in a downlink information transfer message so as to be received via signaling radio bearer (SRB) 3 of the SCG, the RRC reconfiguration completion message is transmitted via configured SRB1 on the basis of the RRC reconfiguration message.