A service continuity implementation method, a device, and a service continuity implementation system, to ensure service continuity in a handover process, where the method includes: selecting, by a session management function entity, a target user plane function entity to serve a terminal; sending, by the session management function entity, a first message to a control device; receiving, by the session management function entity, indication information of a first application server (AS) from the control device; and sending, by the session management function entity, a first routing rule to the target user plane function entity based on the indication information of the first AS, where the first routing rule specifies that data whose destination address is an address of the first AS is to be sent to the first AS.

A method and system for wireless network bilateral accelerated transmission are provided. The method comprises constructing, by a client and a server, a bilateral accelerated transmission protocol based on a user datagram protocol; and performing, by the client and the server, data transmission based on the bilateral accelerated transmission protocol.

A wireless device and a method performed thereby for communicating with a first network node and a second network node by means of a respective cell thereof are proved. Also a first and second network node and respective methods performed thereby for communicating with a wireless device are provided. The wireless device is in soft handover with at least two cells in its active set where downlink is best from one cell and uplink is best towards another cell, wherein the cell providing the best downlink belongs to the first network node and the cell providing the best uplink belongs to the second network node.

A method and a device for maintaining an emergency call service through a packet network in a mobile communication network are provided. UE using VoLTE receives identification information indicating whether an IMS Voice over PS (VoPS) is supported from a network to determine whether the IMS VoPS of the network is supported, and processes paging for a CS voice call according to the determination result if the emergency call service continues through the packet network.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive information indicating a condition for a conditional handover, and an indication to communicate on a source cell after transmitting a message on a target cell, associated with the conditional handover, and before receiving an additional message on the target cell. The UE may transmit the message on the target cell responsive to the condition for the conditional handover being satisfied. Numerous other aspects are described.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a measurement configuration including trigger conditions for performance of handover procedures within a service-based wireless system. The UE may transmit a message indicating a satisfaction of a trigger condition to a source network entity, a mobility service offered by a service-based network, or both. After performance of a handover decision by the source network entity, the mobility service, or both, the mobility service may select a target network entity for the handover procedure. The mobility service may select a target network entity that supports at least one active core network service at the UE. The UE may then receive a handover command from the mobility service, and may perform a handover procedure to the target network entity.

An example method according to some of the techniques described below is performed by a device operating in a wireless network, where the device could be a UE or a network node, e.g., an NR gNB. This example method includes the step of determining (610) whether a receive-to-transmit or transmit-to-receive switching limitation of a UE can be met during a dual-active protocol stack handover for the UE from a source cell to a target cell. The method further includes the step of taking one or more mitigation actions (620) in response to said determining. Mitigation actions might include, for example, stopping a downlink reception early or starting a scheduled transmission late, in various embodiments or instances.

The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method and apparatus for handling sidelink communication according to type of handover are provided.

A security configuration method in a handover scenario and a communication apparatus are provided. The method includes that a target access network node receives a first message including first information indicating a terminal device to be handed over from a source access network node to the target access network node, and indicating to use a user plane security configuration that is of a data radio bearer and that is the same as that of a data radio bearer of the source access network node. The target access network node sends a response message of the first message. The response message includes second information indicating a user plane security configuration of a second data radio bearer of the target access network node, which is the same as a user plane security configuration of a first data radio bearer of the source access network node.

The present disclosure relates to: a communication technique for convergence of IoT technology and a 5th generation (5G) or a pre-5G communication system for supporting a higher data transmission rate than a 4th generation (4G) communication system such as Long Term Evolution (LTE); 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 businesses, security- and safety-related services, and the like) on the basis of 5G communication technology and IoT-related technology. According to various embodiments of the present disclosure, a method and a device for preventing potential errors that may occur when performing a DAPS handover can be provided.